Reginald L. Goodwin's Posts (3117)

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Comb on a Chip...

 

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Experimental setup to generate a set of stable frequencies in a cryogenically cooled laser microresonator frequency comb. The ring-shaped microresonator, small enough to fit on a microchip, operates at very low laser power and is made from the semiconductor aluminum gallium arsenide.

 

Topics: Applied Physics, Instrumentation, NIST, Nanotechnology, Semiconductor Technology

 

Just as a meter stick with hundreds of tick marks can be used to measure distances with great precision, a device known as a laser frequency comb, with its hundreds of evenly spaced, sharply defined frequencies, can be used to measure the colors of light waves with great precision.

Small enough to fit on a chip, miniature versions of these combs — so named because their set of uniformly spaced frequencies resembles the teeth of a comb — are making possible a new generation of atomic clocks, a great increase in the number of signals traveling through optical fibers, and the ability to discern tiny frequency shifts in starlight that hint at the presence of unseen planets. The newest version of these chip-based “microcombs,” created by researchers at the National Institute of Standards and Technology (NIST) and the University of California at Santa Barbara (UCSB), is poised to further advance time and frequency measurements by improving and extending the capabilities of these tiny devices.

Comb on a Chip: New Design for ‘Optical Ruler’ Could Revolutionize Clocks, Telescopes, Telecommunications, NIST

Paper: G. Moille, L. Chang, W. Xie, A. Rao, X. Lu, M. Davanco, J.E. Bowers and K. Srinivasan. Dissipative Kerr Solitons in a III-V Microresonator. Laser and Photonics Reviews. June 2020. DOI: 10.1002/lpor.202000022

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The Enlightenment...

 

Topics: Civil Rights, Existentialism, History, Politics

Enlightenment, French siècle des Lumières (literally “century of the Enlightened”), German Aufklärung, a European intellectual movement of the 17th and 18th centuries in which ideas concerning God, reason, nature, and humanity were synthesized into a worldview that gained wide assent in the West and that instigated revolutionary developments in art, philosophy, and politics. Central to Enlightenment thought were the use and celebration of reason, the power by which humans understand the universe and improve their own condition. The goals of rational humanity were considered to be knowledge, freedom, and happiness.

A brief treatment of the Enlightenment follows. For full treatment, see Europe, history of: The Enlightenment.

The powers and uses of reason had first been explored by the philosophers of ancient Greece. The Romans adopted and preserved much of Greek culture, notably including the ideas of a rational natural order and natural law. Amid the turmoil of empire, however, a new concern arose for personal salvation, and the way was paved for the triumph of the Christian religion. Christian thinkers gradually found uses for their Greco-Roman heritage. The system of thought known as Scholasticism, culminating in the work of Thomas Aquinas, resurrected reason as a tool of understanding but subordinated it to spiritual revelation and the revealed truths of Christianity.

Encyclopedia Britannica: Enlightenment: European history

Caveat: Only if you're not BIPOC: Black, Indigenous, and People of Color. Caveats remove the romanticism, which if you explore the Britannica link, romanticism was associated with emotion as well as art, and the opposite of rationalism.

Dr. Danielle Bainbridge has a Ph.D. in African American Studies and varied interests in "big Broadway musicals to the social and political movements of the last 200 years" according to her show's website. Dr. Bainbridge removes the romanticism and mythology we tell ourselves: the apotheosis we've promoted our flawed, Founding Fathers to, such that any real history that doesn't place their descendants in a good light is ignored, rewritten and propagandized. See: The Lost Cause.

People are in the streets: because 401 years is the patience of Job on steroids, post reconstruction, lynchings and Jim Crow. We've never had the luxury of PTSD: it's ever-present traumatic stress disorder, over-and-over. Necks were stretched with ropes from trees before esophagi constricted with choke holds in New York and knees in Minnesota.

In my 2016 post, Scientism, the point was scientists and the scientific community being human have prejudices. Prejudices are learned from "credible others": usually parents, relatives and authority figures respected. As Bainbridge points out in the video above, science masks racism with "reason," such that structural inequality that was once defined by divine law can be redefined by natural law, so that nothing really changes. It rationalizes low numbers in STEM fields so that no actions are needed until jogging while black: Ahmaund Aubrey; sleeping while black: Breonna Taylor, with a viral George Floyd snuff video as icing on a blood cake. I'm glad the academy is tackling it, but it's long overdue. Jane Elliott says it best: "You are not born racist. You are born into a racist society. And like anything else, if you can learn it, you can unlearn it. But some people choose not to unlearn it, because they're afraid they'll lose power if they share with other people. We are afraid of sharing power. That's what it's all about."

I don't want a "return to normal." Normal was Winthrop's "city on a hill," that might as well be a pile of feces plated with gold and silver: it's still a dressed-up pile of shit.

American mythology teaches that the early United States was founded by men of conscience who came to the "new world" in order to practice their religious convictions in peace and freedom. John Winthrop (1588–1649), the first governor of the Massachusetts Bay Colony, in particular has been quoted as a source of inspiration by U.S. presidents from John F. Kennedy to Ronald Reagan.

Yet Winthrop did not represent a tradition of either democracy or religious tolerance. He hated democracy with a passion. The state he created did not hesitate to execute people like the Quakers and even brought to the "new" world the very popular tradition of medieval Europe, the trial and execution of witches.

"A Shining City on a Hill": Troubling information about a famous quote. The Puritan tradition of intolerance and John Winthrop, World Future Fund

"United States" is oxymoron - a contradiction in terms. We're 50 warring tribes and unrepresented territories: D.C. Guam, the U.S. Virgin Islands and Puerto Rico. We were sure adding stars to that flag, complaining about kneeling S.O.B.s protesting police brutality; stealing territory from First Nation peoples and Mexico for the racist "Manifest Destiny." We halted it when the math didn't work for the racists, and the balance of the senate was in play. I count eight more senators for 54 states, that may not vote the way Moscow Mitch might want them to. See Jane Elliott here, and above.

We've moronically made masks a culture war. The European Union consists of 27 nations, and this graph is all you need to know why there is a travel ban to Europe for U.S. citizens. He got his "travel ban," alright: American "exceptionalism" in Bizarro World. Boomerangs work, and karma is a bitch. We're apparently going to see if raking puts out forest fires and COVID spread at Mt. Rushmore. If anything bad happens, he'll blame Obama.

Masks might have stymied the spread of Coronavirus, but we're on the Good Ship Pequod abandoned by surprisingly woke Ahab, once he found out about prosthetic limbs and decided pursuing white whales for revenge was bullshit. In a fit of panic, sheer lucidity and rightfully ignoring Lt. Governor Dan Patrick’s death cult ramblings, Governor Greg Abbott implemented a mandatory masks executive order in Texas, likely saving his job for re-election.

“Facts are stubborn things; and whatever may be our wishes, our inclinations, or the dictates of our passion, they cannot alter the state of facts and evidence.” John Adams

The ship-of-state is currently being steered by tweeting, orange Captain dumb ass, performing embarrassing, public political fellatio on a KGB agent that obviously has his number to his bank account. He has YET to retaliate to $100,000 bounties against our service members in Afghanistan. His bemoaning dead confederates was a culture war dodge: we need the ban for the safety of the rest of the planet, we're a manifest global pandemic of hate, and because we have NO leader that will protect us now! We are defenseless, and our mad emperor is perpetually naked.

We are isolated from the world. I would like us one day to rejoin it, humanely and sanely. I want us to actually START acting like the mythology we believed ourselves through propaganda (wrongly) to be.

I want us to evolve, mature, finally ...enlightened.

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2D Boost for 5G...

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A diagram of the UT Austin team's switch showing two gold electrodes with a layer of hBN in between. (Courtesy: UT Austin)

 

Topics:  Boron Nitride, Internet of Things, Materials Science, Nanotechnology

Two-dimensional sheets of boron nitride can be used to create an analogue switch that gives communication devices more efficient access to radio, 5G and terahertz frequencies while increasing their battery life. The switch, which was developed by a team of researchers at the University of Texas at Austin in the US and the University of Lille in France, could be employed in a host of different applications, including smartphones, mobile systems and the “Internet of things”.

Analogue switches are routinely employed in communication systems to switch from one frequency band to another, route signals between transmitting and receiving antennas, and reconfigure wireless networks. Traditionally, these switches are based on solid-state diodes or transistors, but components of this type consume energy even in standby mode, reducing the battery life of the device. With 5G networking set to drive a tenfold increase in data throughput – enabling advances in self-driving cars, delivery drones, remote surgery and fast downloads of high-definition media in the process – addressing this energy drain is more urgent than ever.

5G switching gets a 2D boost, Isabelle Dumé, Physics World

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Photonic Nanojets...

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FIG. 1. (a) Long-legs cellar spider. (b) Reeling mechanism. (c) Manufacturing process of decorating spider silk. (d) Spider silk with dome lens placed on a dedicated holder. (e) Microphotograph of dome lens. (f) Laser scanning digital microscope system for measuring dome lens. (g) Schematic diagram of the dome lens for generating PNJ.

 

Topics: Biology, Materials Science, Nanotechnology

ABSTRACT

In this work, we thoroughly investigate the shape, size, and location of the photonic nanojets (PNJs) generated from the illuminated dome lens. The silk fiber is directly extracted from the cellar spider and used to form the dome lens by its liquid-collecting ability. The solidified dielectric dome lenses with different dimensions are obtained by using ultraviolet curing. Numerical and experimental results show that the long PNJs are strongly modulated by the dimension of the dome lens. The optimal PNJ beam shaping is achieved by using a mesoscale dielectric dome lens. The PNJ with a long focal length and a narrow waist could be used to scan over a target for large-area imaging. The silk fiber with a dome lens is especially useful for bio-photonic applications by combining its biocompatibility and flexibility.

Optimal photonic nanojet beam shaping by mesoscale dielectric dome lens

Journal of Applied Physics 127, 243110 (2020); https://doi.org/10.1063/5.0007611

C.B. Lin, Yi-Ting Lee, and Cheng-Yang Liu

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Greener Solar Cells...

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Scanning electron microscope image of electrodes infiltrated with quantum dots (left) and the corresponding distributions of copper, indium, zinc, and selenium across the film thickness. Courtesy: LANL
 
 

Topics: Green Tech, Nanotechnology, Quantum Mechanics, Solar Cells

Semiconducting nanocrystals called colloidal quantum dots (CQDs) are ideal for applications such as large-panel displays and photovoltaic cells thanks to their high efficiency and colour purity. Their main drawback is their toxicity, since they have traditionally been made from cadmium or other heavy metals, such as lead. Researchers at the Los Alamos National Laboratory in the US have now engineered cadmium-free QD solar cells that reach efficiencies on par with those of their environmentally-unfriendly counterparts. The key to the new devices’ high performance is their tolerance to defects, they say.

CQDs can be synthesized in solution, which means that films of these nanocrystals can be deposited quickly and easily on a range of flexible or rigid substrates – just like paint or ink. Such semiconducting nanocrystals are ideal for making highly-efficient inorganic solar cells that emit light via a process known as radiative recombination. Here, an electron in the valency energy band in the QD absorbs a photon and moves to the conduction band, leaving behind an electron vacancy, or hole. The excited electron and hole then recombine, releasing a photon.

The advantage of using CQDs as photovoltaic materials in solar cells is that they absorb light over a broad spectrum of solar radiation wavelengths. This is because the band gap of a CQD can be tuned over a large energy range by simply changing the size of the nanocrystals. Such a size-tuneable property has allowed the efficiencies of these QDs to rapidly approach those of traditional thin-film photovoltaics, such as PbS, CdTe and Pb-halide perovskite QDs.

Quantum dot solar cells get greener, Isabelle Dumé, Physics World

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Our Galaxy's Water Worlds...

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This artist’s concept shows a hypothetical planet covered in water around the binary star system of Kepler-35A and B. The composition of such water worlds has fascinated astronomers and astrophysicists for years. (Image by NASA/JPL-Caltech.)

 

Topics: Astronomy, Astrobiology, Astrophysics, Cosmology, Exoplanets

Out beyond our solar system, visible only as the smallest dot in space with even the most powerful telescopes, other worlds exist. Many of these worlds, astronomers have discovered, may be much larger than Earth and completely covered in water — basically ocean planets with no protruding land masses. What kind of life could develop on such a world? Could a habitat like this even support life?

A team of researchers led by Arizona State University (ASU) recently set out to investigate those questions. And since they couldn’t travel to distant exoplanets to take samples, they decided to recreate the conditions of those water worlds in the laboratory. In this case, that laboratory was the Advanced Photon Source (APS), a U.S. Department of Energy (DOE) Office of Science User Facility at the DOE’s Argonne National Laboratory.

What they found — recently published in Proceedings of the National Academy of Sciences — was a new transitional phase between silica and water, indicating that the boundary between water and rock on these exoplanets is not as solid as it is here on Earth. This pivotal discovery could change the way astronomers and astrophysicists have been modeling these exoplanets, and inform the way we think about life evolving on them.

Dan Shim, associate professor at ASU, led this new research. Shim leads ASU’s Lab for Earth and Planetary Materials and has long been fascinated by the geological and ecological makeup of these distant worlds. That composition, he said, is nothing like any planet in our solar system — these planets may have more than 50% water or ice atop their rock layers, and those rock layers would have to exist at very high temperatures and under crushing pressure.

Beneath the surface of our galaxy’s water worlds, Andre Salles, Argonne National Laboratory

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Wrestle Mania...

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Mil Máscaras, 2009. Source: Wikipedia

 

Topics: Civics, Civil Rights, COVID-19, Existentialism, Human Rights, Humor, Politics

In the old days, wrestlers would meet, and fans would be interested in knowing who wins and how. There were stories, but there were also plain old matches. Now, there are writers. Every match, every encounter, is designed to advance a character. And all the matches fit in to the general theme of the broadcast, which is given a title. For last week's Raw, the backstage title was "The Evolution of Justice." It's a reference to two sets of wrestlers who are on a collision course.

Your WWE wrestling script begins with background: What happened the last time WWE played to this area. Knowing what the fans remember is very important motivation for the wrestlers.

Then there are the "dark matches." Before WWE Raw goes live on the USA Network, WWE tapes two matches that will air exclusively on the company's own TV network.

Then there's the audience prep. Just like any TV show, the audience has to be conditioned to react to certain things. On April 14, WWE was going to mourn the death of the Ultimate Warrior, felled from a heart attack a few days before. So WWE announcer Jerry Lawler, who gets his own pre-event, full-stage introduction, is instructed to remind fans to put on their masks so that WWE can go live on the air with a tribute.

Then comes the first match. It'll be interrupted by a commercial break, which is something that the wrestlers know — they can't decide to go to "the finish" when the TV audience is watching a Pringles commercial. Match number one is between Rob Van Dam and Alberto Del Rio.

The announcers know who will get "over," i.e. win, but they don't know how. This allows them to actually announce the action in the match legitimately.

Excerpts from: "Here's what a pro-wrestling script looks like," by Mark Ambinder, Newsweek

My last foray with pro wrestling was about 1974 (age 12) with both of my parents at the Winston-Salem Memorial Coliseum.

These were originally father-son outings, but my mother decided she wanted to go, so we let her tag along for more than a few times. Generally, she was quiet during the action as my dad and I shouted either our approval or disdain for the admitted actors in the ring: The "American Dream," Dusty Rhodes, Dick, the Bulldog Brower (I know the definitions of his first two names, I'm clueless as to what a "Brower" is); The Mighty Igor and "the man of a thousand masks," Mil Máscaras. Mil and the Brower were in heated, pitched mock battle in the ring, when mom suddenly yelled out:

Break it off, it don't belong to you!

This was from my mother, mind you. My father and I were speechless. As if reading my embarrassed young mind, Pop said: "I expect we'll go home now." We did, and I never went to a wrestling match again. Mom wasn't exactly fuming: I think SHE was as shocked by what she said as WE were!

Previously, I've speculated this reality show carnival barker is running an episodic tragedy, only because as a terrible B-movie actor with zero empathy and no social graces, this is the only show he knows how to produce. Twitter is just a bullhorn for a snake oil salesman and carnival barker.

I posit here, instead of a reality show, he's running a typical pro-wrestling script. He's fake wrestled before and sent a doctored version of the video out personifying CNN as his adversary. He probably bathed in Ben Gay after the stunt.

My mother when she was alive was five foot, two inches, petite and well, motherly. Yelling like the rest of the crowd was a response of being in the crowd, being influenced by my father's and my actions as well as theirs. Orange Satan's spawn following is in-the-crowd: following every inane tweet, every suggesting this pandemic would be 15 people, then zero, every prediction from a faux "cubic model" this would be over by Memorial Day (it's late June), every suggestion hot weather would diminish the infections (it's not), every suggestion to drink bleach or shine a flashlight up our asses; every stupid example of NOT wearing a mask, until it's become a culture war issue.

"Stable genius" maybe should have asked Mil Máscaras?

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Pride Month...

 

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Image Source: Link below

Pride Month

 

Topics: Diversity, Diversity in Science, LGBT, Women in Science

AIP and its Member Societies are committed to promoting diversity and inclusion in the physical sciences. In honor of Pride Month and LGBTSTEM Day, we have gathered some resources that support the LGBTQ+ community of scientists. Also highlighted are contributions from the LGBTQ+ community to science and humanity that are worthy of celebration.

LGBTSTEM Day

LGBTQ+ people in science, technology, engineering, and math continue to struggle to openly be themselves. That's why AIP is proud to partner with organizations around the world on LGBTSTEM Day, which will be celebrated on Nov. 18, 2020. We believe that a day of recognition could go a long way in helping raise awareness and increase support. We want this to be a new and important component of the global push to increase diversity and inclusion in STEM.

There’s no such thing as too small a gesture to promote and support LGBTQ+ people in STEM. You can start by checking out our resources below, following and contributing to the #LGBTSTEMday hashtag on social media — share stories, images and videos of yourself or your role models — and helping to boost the visibility of other LGBTQ+ people in science, tech, engineering, and math.

I participated in the RTNN Anti-Racism Town Hall, and delivered many of the remarks I thought about at the #ShutDownSTEM conference at JSNN. I truncated them for brevity. There were over 200 member universities on the call, including my Dean. My remarks sparked one research at Harvard to recall he was discriminated against most fully in graduate school at Stanford, and his son was accused of cheating on a middle school math test because he was African American and the only one that passed it. His father, a chemist, pointed out "how could he have cheated, when there was literally no one else he could have copied from?" An Ethiopian researcher, also a chemist, recounted she was asked by colleagues if "she knew what a Ph.D. meant?" The conference didn't strive to solve all problems in an hour and a half, but it did spark discussion and inspired this posting.

Note: RTNN = Research Triangle Nanotechnology Network with North Carolina State University; JSNN = Joint School of Nanoscience and Nanoengineering, a collaboration between North Carolina Agricultural and Technical State University and the University of North Carolina, Greensboro.

I was also good friends with a gay man that was a fellow math teacher at Manor High School. We've kept up on Facebook and have interesting conversations regarding culture. He's strongly anti-racist, and he pitches ideas to me regarding culture and where we are at any given moment or movement in our society. I appreciate his candor. I also appreciate when I was deciding to go to graduate school, he was one of the many friends that pushed me along. It's a difficult decision to make a choice to leave the comfort of a paycheck and gain understanding that you likely wouldn't get from a 3-day seminar sponsored with lunch by your company. He did the same and pursued a Ph.D. in applied mathematics. I am grateful for his encouragement and inspiration.

In Austin, Texas, I also am good friends with a gay performance poet and literary editor of several journals: we're also friends on Facebook, despite the inclinations of the platform extending favors to the alt-wrong and nauseous Nazis. He is also strongly anti-racist, which is a term I use to distinguish from just the empty pronouncements "I'm not racist," or "I don't see color." We keep up on the poetry happenings in Austin as well as political news that we both comment on.

I admire both men. As I admire Alan Turing, James Baldwin, Lorraine Hansberry; Langston Hughes. They are American icons, oft-quoted, or in the case of Turing, the father of the platforms we so enjoy on laptops, I-Pads and cellphones. They were also, as my friends, gay.

The pursuit of science and art are human endeavors. Those endeavors have no bearing on what god those humans revere, or who they chose to love.

At this juncture, post-Charlottesville, post-Ahmaud Arbery, post-Breonna Taylor, post-George Floyd, post-Tulsa, "We The People" means ALL the people: so-called black and white (there is only ONE race: the human race, everything else is politics); gay and straight. One cannot demand rights for one group and exclude them for another, especially when you name them as close friends you've had fellowship with off social media platforms.

I thank John and Scott (first names only) for being friend I can count on. They've never met, actually. But rest assured, I've met them and admire their daily courage of being themselves, fully and openly, contributing mightily to science and art.

Pride Month and LGBTSTEM Day, American Institute of Physics

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Smoke rises from wildfires near Berezovka River in Russia in this June 23, 2020 color infrared image supplied by Maxar Technologies. Image taken June 23, 2020. Satellite image ©2020 Maxar Technologies via REUTERS

 

Topics: Climate Change, Global Warming, Existentialism

LONDON/GENEVA (Reuters) - Pine trees are bursting into flames. Boggy peatlands are tinderbox dry. And towns in northern Russia are sweltering under conditions more typical of the tropics.

Reports of record-breaking Arctic heat – registered at more than 100 Fahrenheit (38 Celsius) in the Siberian town of Verkhoyansk on June 20 – are still being verified by the World Meteorological Organization. But even without that confirmation, experts at the global weather agency are worried by satellite images showing that much of the Russian Arctic is in the red.

That extreme heat is fanning the unusual extent of wildfires across the remote, boreal forest and tundra that blankets northern Russia. Those blazes have in turn ignited normally waterlogged peatlands.

Scientists fear the blazes are early signs of drier conditions to come, with more frequent wildfires releasing stores of carbon from peatland and forests that will increase the amount of planet-warming greenhouse gases in the air.

“This is what this heat wave is doing: It makes much more fuel available to burn, not just vegetation, but the soil as well,” said Thomas Smith, an environmental geographer at the London School of Economics. “It’s one of many vicious circles that we see in the Arctic that exacerbate climate change.”

Siberian heat wave is a 'warning cry' from the Arctic, climate scientists say, Matthew Green, Emma Farge, Reuters Science

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Axions...

 

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Image Source: Axion particle spotted in solid-state crystal, Max Planck Society, Phys.org

 

 

Topics: Cosmology, Dark Matter, Particle Physics, Quantum Mechanics, Standard Model

A team of physicists has made what might be the first-ever detection of an axion.

Axions are unconfirmed, hypothetical ultralight particles from beyond the Standard Model of particle physics, which describes the behavior of subatomic particles. Theoretical physicists first proposed the existence of axions in the 1970s in order to resolve problems in the math governing the strong force, which binds particles called quarks together. But axions have since become a popular explanation for dark matter, the mysterious substance that makes up 85% of the mass of the universe, yet emits no light.

If confirmed, it’s not yet certain whether these axions would, in fact, fix the asymmetries in the strong force. And they wouldn’t explain most of the missing mass in the universe, said Kai Martens, a physicist at the University of Tokyo who worked on the experiment. These axions, which appear to be streaming out of the sun, don’t act like the “cold dark matter” that physicists believe fills halos around galaxies. And they would be particles newly brought into being inside the sun, while the bulk of the cold dark matter out there appears to have existed unchanged for billions of years since the early universe.*

Still, it sure seems like there was a signal. It turned up in a dark underground tank of 3.5 tons (3.2 metric tons) of liquid xenon—the XENON1T experiment based at the Gran Sasso National Laboratory in Italy. At least two other physical effects could explain the XENON1T data. However, the researchers tested several theories and found that axions streaming out of our sun were the likeliest explanation for their results.

Physicists who weren’t involved in the experiment have not reviewed the data as of the announcement at 10 a.m. ET today (June 17). Reporters were briefed on the finding before the announcement, but data and paper on the find were not made available.

Live Science shared the XENON collaboration’s press release with two axion experts.

Physicists Announce Potential Dark Matter Breakthrough, Rafi Letzter, Live Science/Scientific American

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Majorana qubits...

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Image Source: Link below

 

Topics: History, Modern Physics, Quantum Computer, Quantum Mechanics

Soon after Enrico Fermi became a professor of physics at Italy’s University of Rome in 1927, Ettore Majorana joined his research group. Majorana’s colleagues described him as humble because he considered some of his work unexceptional. For example, Majorana correctly predicted in 1932 the existence of the neutron, which he dubbed a neutral proton, based on an atomic-structure experiment by Irène Joliot-Curie and Frédéric Joliot-Curie. Despite Fermi’s urging, Majorana didn’t write a paper. Later that year James Chadwick experimentally confirmed the neutron’s existence and was awarded the 1935 Nobel Prize in Physics for the discovery.

Nevertheless, Fermi thought highly of Majorana, as is captured in the following quote: “There are various categories of scientists, people of a secondary or tertiary standing, who do their best but do not go very far. There are also those of high standing, who come to discoveries of great importance, fundamental for the development of science. But then there are geniuses like Galileo and Newton. Well, Ettore was one of them.” Majorana only wrote nine papers, and the last one, about the now-eponymous fermions, was published in 1937 at Fermi’s insistence. A few months later, Majorana took a night boat to Palermo and was never seen again.1

In that final article, Majorana presented an alternative representation of the relativistic Dirac equation in terms of real wavefunctions. The representation has profound consequences because a real wavefunction describes particles that are their own antiparticles, unlike electrons and positrons. Since particles and antiparticles have opposite charges, fermions in his new representation must have zero charge. Majorana postulated that the neutrino could be one of those exotic fermions.

Although physicists have observed neutrinos for more than 60 years, whether Majorana’s hypothesis is true remains unclear. For example, the discovery of neutrino oscillations, which earned Takaaki Kajita and Arthur McDonald the 2015 Nobel Prize in Physics, demonstrates that neutrinos have mass. But the standard model requires that neutrinos be massless, so various possibilities have been hypothesized to explain the discrepancy. One answer could come from massive neutrinos that do not interact through the weak nuclear force. Such sterile neutrinos could be the particles that Majorana predicted. Whereas conclusive evidence for the existence of Majorana neutrinos remains elusive, researchers are now using Majorana’s idea for other applications, including exotic excitations in superconductors.

Majorana qubits for topological quantum computing, Physics Today

Ramón Aguado is a senior researcher at the Spanish National Research Council (CSIC) in Madrid.

Leo Kouwenhoven is a researcher at the Microsoft Quantum Lab Delft and a professor of applied physics at Delft University of Technology in the Netherlands.

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A fan made cover for George Orwell's novel. "Animal Farm" is one of Orwell's most well-known works and gained unlikely popularity with Ukrainian refugees. (Photo from Flickr user Ben Templesmith.) PRI.org
 

 

Topics: Civics, Civil Rights, Human Rights, Politics, STEM

 

Columbusing: The art of discovering something that isn't new; "1492, Columbus was Columbusing the 'new world' one journal entry at a time" Source: Urban Dictionary

Black Wall Street:

On the morning of May 30, 1921, a young black man named Dick Rowland was riding in the elevator in the Drexel Building at Third and Main with a white woman named Sarah Page. The details of what followed vary from person to person. Accounts of an incident circulated among the city’s white community during the day and became more exaggerated with each telling.

Tulsa police arrested Rowland the following day and began an investigation. An inflammatory report in the May 31 edition of the Tulsa Tribune spurred a confrontation between black and white armed mobs around the courthouse where the sheriff and his men had barricaded the top floor to protect Rowland. Shots were fired and the outnumbered African Americans began retreating to the Greenwood District.

In the early morning hours of June 1, 1921, Greenwood was looted and burned by white rioters. Governor Robertson declared martial law, and National Guard troops arrived in Tulsa. Guardsmen assisted firemen in putting out fires, took African Americans out of the hands of vigilantes and imprisoned all black Tulsans not already interned. Over 6,000 people were held at the Convention Hall and the Fairgrounds, some for as long as eight days.

Twenty-four hours after the violence erupted, it ceased. In the wake of the violence, 35 city blocks lay in charred ruins, over 800 people were treated for injuries and contemporary reports of deaths began at 36. Historians now believe as many as 300 people may have died.

1921 Tulsa Race Massacre, Tulsa Historical Society and Museum

In popular culture, it was reenacted in the opening scenes of Watchmen on HBO. Today is my sister's, and what would have been my father's 95th birthday. What would have been my mother's 95th is this September 15: on that date in 1963, the Sixteen Street Baptist Church Bombing happened in Birmingham, Alabama. I was one year, one month and one day old. As with my own granddaughter now, I was likely full of happy smiles, and blissfully unaware the world was so complicated.

But today, it is also, Juneteenth.

Juneteenth is a holiday celebrated across the country commemorating the formal emancipation of slaves in the United States. Although the Emancipation Proclamation was scheduled to be effective on January 1, 1863, slavery continued after that date in many states. It was not until two years later, on June 19, 1865, in Galveston, Texas that a Major General from the Union Army informed some of the last remaining slaves of their freedom. This day marked the formal end of slavery in the United States, and Juneteenth was born in celebration of that day. Today the summer holiday is often celebrated by large get-togethers, cookouts, music, and food. But this holiday has evolved significantly over the century. Let's take a look back at some memorable past Juneteenth celebrations and events as reported in many of the popular African-American newspapers of the time, all available through The New York Public Library's electronic resources.

The first Juneteenth celebrations were especially important. Many African-Americans who were enslaved participated in the celebrations and passed on their experiences to the next generation. In Parsons, Kansas in 1895, the Parsons Weekly Blade, told how they celebrated the thirtieth anniversary of the emancipation by, "indulging in various pleasures," followed by "sumptuous repasts." Then came a series of speeches about the importance of Juneteenth and the experience of slavery still fresh for many African-Americans. After the speeches the celebrations continued with, "an animated game of baseball."

In 1915, The Chicago Defender wrote, "Texas is a wonderful state in more ways than one. Looking at it from our point of view, they can can deal out some of the most unjust justice and then, as if to relieve their conscience, they can flop over and do the most gracious things." That year, in celebration of Juneteenth, Governor Ferguson pardoned forty prisoners from the state penitentiary.

Researching Juneteenth Celebrations at The New York Public Library, Rhonda Evans, Assistant Chief Librarian, JBH Research and Reference Division, Schomburg Center for Research in Black Culture, June 19, 2017

The 80s G.A.P. Band derived their name from three corners that intersected Black Wall Street: Greenwood, Archer and Pine. Orange Satan thinks he's "made Juneteenth famous." I tweeted this yesterday to him, with the following: "Juneteenth didn't need you. Did you EVER walk into this building (NYPL), or did I answer my own question?" I think I did.

President Donald Trump planned to hold a rally Friday in Tulsa, Oklahoma – the site of the worst racial attack in U.S. history, by many accounts. After days of controversy over that choice, he changed the date.

The history of the massacre in the area, which was known as "Black Wall Street," spotlights the formation of an affluent Black community and the gruesome events that destroyed it.

In 1921, a white mob attacked a predominantly Black area in Tulsa, killing hundreds of people and destroying the country’s wealthiest African American community. Its abrupt demise and similar incidents around the country during that period played a role in widening the racial wealth divide, experts say.

Part of what enraged critics, Trump had planned to speak to supporters June 19, or Juneteenth, known as Emancipation Day – the date in 1865 when a Union general traveled to Galveston, Texas, to read President Abraham Lincoln’s orders freeing the slaves.

'Black Wall Street': Trump's plan for rally in Tulsa calls attention to 1921 race massacre, Paul Davidson, USA Today

He's planning to accept the nomination of his party on the 60th anniversary of Ax Handle Saturday, August 27, 1960, when peaceful sit-in activists for civil rights were clubbed by whites and local KKK members. Once is an "oops"; twice is trolling.

A simple search of this blog finds entries on the term "war on science," to which this entry is now added. Paraphrasing George Orwell, ignorance has become a sort of strength, or at least a hammer; an ax handle clubbing everyone into submission. Authoritarians have been skittish of science since Galileo. When science confirms their dogma: good. When instrumentation and discoveries go against holy writ from the Bronze Age, literally all HELL breaks loose! Winthrop's Puritanism is pumped up on steroids. Chest are beaten and noses flare, the adrenaline rush falsely empowering the faithful with a sense of mission: a holy grail quest. The most vile heresies can be justified and covered if it's under two words: "God's will," typically interpreted by white, Anglo Saxon Protestant, Cisgender males and their misogynistic, homophobic, racist, xenophobic and patriarchal worldviews.

Masks are now a culture war issue, despite the science that says they help slow the spread of the virus and allow us to SAFELY open. Despite the Coronavirus numbers spiking in Tulsa, Oklahoma, where the Black Wall Street massacre (not riot), his supporters are signing his waiver, and they are showing up without first notion of protecting others. Though he's dodged a huge bullet up to now, I don't think magical thinking will inhibit an aggressive virus, whose only basic program is to replicate itself, whether in the pews of ardent followers, or on the podium of their reconstructed "Two-Minutes Hate" orange god. We have confused skepticism with contrarianism and intelligence with brute ignorance. There is a pride in exceptionalism Americans have, that has crossed over to haughtiness, and the rest of the planet frankly, could give a shit, which matches the attitude of "dear leader." The faithful may only "get it," when they and their bizarre cult leader are under clinical endotracheal intubation.

The world is studying STEM with vigor, and we are falling behind because of a world changed by anthropomorphic climate disruption, income inequality, employment replaced by - in the words of James Boggs - "automation and cybernation". Backwards time travel only happens on the quantum level and in science fiction stories. We will soon "reap the whirlwind" when instead of blaming China for the pandemic; stealing secrets from us: we may have to eat crow if the plant a communist flag on the moon we, to this DAY, deny we ever visited. Technology will only accomplish one of two things: liberate us superficially, while our minds further atrophy by not exercising it, or efficiently enslave us physically, the strings pulled by an authoritarian puppet master, fearful and manipulative, with enough dexterity and remaining motor skills...to tweet. Both possibilities are "equally terrifying."

"Two possibilities exist: either we are alone in the Universe or we are not. Both are equally terrifying." Arthur C. Clarke

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A Scaffold in Time...

 

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A lattice scaffold 3D printed directly onto soft living tissue. (Courtesy: Ohio State University)

 

 

Topics: 3D Printing, Bioengineering, Biofabrication, Biology, Tissue Engineering

Tissue engineering is an emerging field in which cells, biomaterials and biotechnologies are employed to replace or regenerate damaged or diseased tissues. Currently, this is achieved by generating a biomaterial scaffold outside of the body, maturation in a bioreactor and then surgically implanting the created tissue into the patient. This surgery, however, poses the added risk of infection, increases recovery time and may even negate the therapeutic benefits of the implant.

To prevent such complications, a US research team is developing a way to fabricate 3D tissue scaffolds inside a living patient – so-called intracorporeal tissue engineering. The researchers, from the Terasaki Institute, Ohio State University and Pennsylvania State University, aim to use robotic direct-write 3D printing to dispense cell-laden biomaterials (bioinks) in a highly precise, programmable manner. The printed bioinks are delivered through minimally invasive surgical incisions and the body itself acts as the bioreactor for maturation.

Any technique used to directly print tissues inside the body, however, must meet a specific set of requirements. The biomaterial must be 3D printable at body temperature (37 °C), for example, and all procedural steps should not harm the patient. For example, current methods use UV light to crosslink the constructed tissue, which is not safe for use within the body.

To meet these requirements, the team produced a specially-formulated bioink designed for printing directly in the body. They used the hydrogel gelatin methacryloyl (GelMA) as the biomaterial, and introduced Laponite and methylcellulose as rheological modifiers to enhance printability. “This bio-ink formulation is 3D printable at physiological temperature, and can be crosslinked safely using visible light inside the body,” explains first author Ali Asghari Adib.

Tissue engineering moves closer to 3D printing inside the body, Tami Freeman, Physics World

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40 Eridani A...

 

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Vulcan from the link, also see Memory Alpha

 

Topics: Astronomy, Astrophysics, Exoplanets, Science Fiction, Star Trek

Note: 2018 article, but neat nonetheless.

One of the more interesting and rewarding aspects of astronomy and space exploration is seeing science fiction become science fact. While we are still many years away from colonizing the Solar System or reaching the nearest stars (if we ever do), there are still many rewarding discoveries being made that are fulfilling the fevered dreams of science fiction fans.

For instance, using the Dharma Planet Survey, an international team of scientists recently discovered a super-Earth orbiting a star just 16 light-years away. This super-Earth is not only the closest planet of its kind to the Solar System, it also happens to be located in the same star system as the fictional planet Vulcan from the Star Trek universe.

The study which details their findings, which recently appeared in the Monthly Notices of the Royal Astronomical Society, was led by Bo Ma and Jian Ge, a post-doctoral researcher and a professor of astronomy from the University of Florida, respectively. They were joined by researchers from Tennessee State University, the Instituto de Astrofisica de Canarias, the Universidad de La Laguna, Vanderbilt University, the University of Washington, and the University of Arizona’s Steward Observatory.

“The new planet is a ‘super-Earth’ orbiting the star HD 26965, which is only 16 light years from Earth, making it the closest super-Earth orbiting another Sun-like star. The planet is roughly twice the size of Earth and orbits its star with a 42-day period just inside the star’s optimal habitable zone.”

“Star Trek fans may know the star HD 26965 by its alternative moniker, 40 Eridani A,” he said. “Vulcan was connected to 40 Eridani A in the publications “Star Trek 2” by James Blish (Bantam, 1968) and “Star Trek Maps” by Jeff Maynard (Bantam, 1980).”

Astronomers find Planet Vulcan – 40 Eridani A – Right Where Star Trek Predicted it, Universe Today

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36, or 42...

Intelligent%2BLife.PNG
A meme of past memes - seemed apropos.

 

Topics: Astrophysics, Humor, Science Fiction, SETI

Note: I use three sources for the commentary I've seen breathlessly displayed on the Internet speculating there may be 36 communicative (but, noticeably silent) civilizations in the Milky Way Galaxy. I grinned, and composed the combo meme above. Two words came to mind on my social media feed: click bait.

*****

The number 42 is, in The Hitchhiker's Guide to the Galaxy by Douglas Adams, the "Answer to the Ultimate Question of Life, the Universe, and Everything", calculated by an enormous supercomputer named Deep Thought over a period of 7.5 million years. Unfortunately, no one knows what the question is. Source: Wikipedia

*****

It's been a hundred years since Fermi, an icon of physics, was born (and nearly a half-century since he died). He's best remembered for building a working atomic reactor in a squash court. But in 1950, Fermi made a seemingly innocuous lunchtime remark that has caught and held the attention of every SETI researcher since. (How many luncheon quips have you made with similar consequence?)

The remark came while Fermi was discussing with his mealtime mates the possibility that many sophisticated societies populate the Galaxy. They thought it reasonable to assume that we have a lot of cosmic company. But somewhere between one sentence and the next, Fermi's supple brain realized that if this was true, it implied something profound. If there are really a lot of alien societies, then some of them might have spread out.

Fermi realized that any civilization with a modest amount of rocket technology and an immodest amount of imperial incentive could rapidly colonize the entire Galaxy. Within ten million years, every star system could be brought under the wing of empire. Ten million years may sound long, but in fact it's quite short compared with the age of the Galaxy, which is roughly ten thousand million years. Colonization of the Milky Way should be a quick exercise.

So what Fermi immediately realized was that the aliens have had more than enough time to pepper the Galaxy with their presence. But looking around, he didn't see any clear indication that they're out and about. This prompted Fermi to ask what was (to him) an obvious question: "where is everybody?"

SETI Institute: Fermi Paradox, Seth Shostak, Senior Astronomer

*****

How many intelligent alien civilizations are out there among the hundreds of billions of stars in the spiral arms of the Milky Way? According to a new calculation, the answer is 36.

That number assumes that life on Earth is more or less representative of the way that life evolves anywhere in the universe — on a rocky planet an appropriate distance away from a suitable star, after about 5 billion years. If that assumption is true, humanity may not exactly be alone in the galaxy, but any neighbors are probably too far away to ever meet.

On the other hand, that assumption that life everywhere will evolve on the same timeline as life on Earth is a huge one, said Seth Shostak, a senior astronomer at the SETI Institute in Mountain View, California, who was not involved in the new study. That means that the seeming precision of the calculations is misleading.

"If you relax those big, big assumptions, those numbers can be anything you want," Shostak told Live Science.

The question of whether humans are alone in the universe is a complete unknown, of course. But in 1961, astronomer Frank Drake introduced a way to think about the odds. Known as the Drake equation, this formulation rounds up the variables that determine whether or not humans are likely to find (or be found by) intelligent extraterrestrials: The average rate of star formation per year in the galaxy, the fraction of those stars with planets, the fraction of those planets that form an ecosystem, and the even smaller fraction that develop life. Next comes the fraction of life-bearing planets that give rise to intelligent life, as opposed to, say, alien algae. That is further divided into the fraction of intelligent extraterrestrial life that develops communication detectable from space (humans fit into this category, as humanity has been communicating with radio waves for about a century).

The final variable is the average length of time that communicating alien civilizations last. The Milky Way is about 14 billion years old. If most intelligent, communicating civilizations last, say, a few hundred years at most, the chances that Earthlings will overlap with their communications is measly at best.

Solving the Drake equation isn't possible, because the values of most of the variables are unknown. But University of Nottingham astrophysicist Christopher Conselice and his colleagues were interested in taking a stab at it with new data about star formation and the existence of exoplanets, or planets that circle other stars outside our own solar system. They published their findings June 15 in The Astrophysical Journal.

Are there really 36 alien civilizations out there? Well, maybe. Stephanie Pappas, Live Science

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Quantum Time...

 

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"Weird Time Tunnel." Image Source Below.

 

Topics: Quantum Computer, Quantum Mechanics, Thermodynamics

It's easy to take time's arrow for granted - but the gears of physics actually work just as smoothly in reverse. Maybe that time machine is possible after all?

An experiment from 2019 shows just how much wiggle room we can expect when it comes to distinguishing the past from the future, at least on a quantum scale. It might not allow us to relive the 1960s, but it could help us better understand why not.

Researchers from Russia and the US teamed up to find a way to break, or at least bend, one of physics' most fundamental laws of energy.

The second law of thermodynamics is less a hard rule and more of a guiding principle for the Universe. It says hot things get colder over time as energy transforms and spreads out from areas where it's most intense.

It's a principle that explains why your coffee won't stay hot in a cold room, why it's easier to scramble an egg than unscramble it, and why nobody will ever let you patent a perpetual motion machine.

Virtually every other rule in physics can be flipped and still make sense. For example, you could zoom in on a game of pool, and a single collision between any two balls won't look weird if you happened to see it in reverse.

On the other hand, if you watched balls roll out of pockets and reform the starting pyramid, it would be a sobering experience. That's the second law at work for you.

Electrons aren't like tiny billiard balls, they're more akin to information that occupies a space. Their details are defined by something called the Schrödinger equation, which represents the possibilities of an electron's characteristics as a wave of chance.

Physicists Have Reversed Time on The Smallest Scale Using a Quantum Computer
Mike McCrae, Science Alert

 

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#ShutDownSTEM...

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Greek poet Dinos Christianopoulos

 

Topics: Civics, Civil Rights, Human Rights, LGBT Rights, Women's Rights

I participated in JSNN's version of #ShutDownSTEM yesterday. It was a discussion led by the Dean about the situation we all find ourselves in post the deaths of Ahmaund Aubrey, Breonna Taylor and George Floyd, laid to rest next to his mom in Houston, Texas.

It was a tentative meeting, thankfully from the Zoom participants extremely diverse. The Joint School of Nanoscience and Nanoengineering is by its construction diverse: Afghanistan, Brazil, Chad, India, Iran, Nigeria, Pakistan, Puerto Rico, Saudi Arabia, Sierra Leone and the United States represented in its student body and faculty. It's quite easy - at least, before the pandemic - to get lulled by the interactions that are often taken as routine, and that the entire country and world are doing exactly what you're doing.

On June 10, 2020, we will #ShutDownAcademia, #ShutDownSTEM, and #Strike4BlackLives.

In the wake of the most recent murders of Black people in the US, it is clear that white and other non-Black people have to step up and do the work to eradicate anti-Black racism. As members of the global academic and STEM communities, we have an enormous ethical obligation to stop doing “business as usual.” No matter where we physically live, we impact and are impacted by this moment in history.

Our responsibility starts with our role in society. In academia, our thoughts and words turn into new ways of knowing. Our research papers turn into media releases, books and legislation that reinforce anti-Black narratives. In STEM, we create technologies that affect every part of our society and are routinely weaponized against Black people.

Black academic and Black STEM professionals are hurting because they exist in and are attacked by institutional and systemic racism. Black people have been tirelessly working for change, alongside their Indigenous and People of Color allies. For Black academics and STEM professionals, #ShutDownAcademia and #ShutDownSTEM is a time to prioritize their needs— whether that is to rest, reflect, or to act— without incurring additional cumulative disadvantage.

Site: #ShutDownSTEM.com

I recalled my asking Mr. Tedford - my middle school science teacher - a question on the coefficient of linear expansion: I was answered with "no, you big dummy!" Upset, in tears, I relayed the encounter to my parents, who promptly made an appointment with Mr. Tedford and the principal at Mineral Springs Middle School. We got a sweaty apology, and I got all my questions answered the rest of that semester year.

I recalled my own interactions with a store detective at Kings Department Store in Winston-Salem, NC, 1976. I was body slammed and frisked while four white males robbed "Deputy Do Wrong" blind in the tennis shoe section. Despite my trying to bring this to his attention, he was convinced that "nigras steal" despite my objections and his lack of evidence.

I recalled asking a rhetorical question of the Brigade Commander: "what does it take to get to your rank" as a ninth grade, shy and impressed Neo ROTC cadet, answered with: "YOUR KIND will never get to this rank!" I did actually, three years later.The Ku Klux Klan (or, someone pretending to be them) left me a death threat: "don't show up for the Brigade Review (parade), nega, or we'll shoot your azz!" I showed up and commanded 180 cadets in formation in front of onlookers that included my parents and girlfriend at the time: anyone that spells that horribly, can't be serious or aim a gun! I'm sincerely glad I wasn't wrong.

These roadblocks are the moments that either break you, or make you, our Nietzsche ("that which does not kill us makes us stronger") Négritude.

Négritude:

The concept of Négritude emerged as the expression of a revolt against the historical situation of French colonialism and racism. The particular form taken by that revolt was the product of the encounter, in Paris, in the late 1920s, of three black students coming from different French colonies: Aimé Césaire (1913–2008) from Martinique, Léon Gontran Damas (1912–1978) from Guiana and Léopold Sédar Senghor (1906–2001) from Senegal. Being colonial subjects meant that they all belonged to people considered uncivilized, naturally in need of education and guidance from Europe, namely France. In addition, the memory of slavery was very vivid in Guiana and Martinique. Aimé Césaire and Léon Damas were already friends before they came to Paris in 1931.

Beyond the encounter between Africa and the French Caribbean Césaire, Senghor and Damas also discovered together the American movement of Harlem Renaissance. At the “salon”, in Paris, hosted by sisters from Martinique, Jane, Paulette and Andrée Nardal, they met many Black American writers, such as Langston Hughes or Claude McKay. With the writers of the Harlem Renaissance movement they found an expression of black pride, a consciousness of a culture, an affirmation of a distinct identity that was in sharp contrast to French assimilationism. In a word they were ready to proclaim the négritude of the “new Negro” to quote the title of the anthology of Harlem writers by Alain Locke which very much impressed Senghor and his friends (Vaillant 1990, 93–94).

Stanford Encyclopedia of Philosophy: Négritude

I didn't say any of the above stories, or relate our Zoom meeting to Négritude, but they are not very far behind me.

The deaths of Ahmaund Aubrey, Breonna Taylor and George Floyd sparked a Neo-Négritude, that instead of remaining indigenous has spread throughout the world. Most marches have been peaceful and multicultural, with a few knuckleheads looting. That's important, because to deconstruct white supremacy, we need the creators of it to do it. We also need certain public African American figures to get a little Négritude, get diagnosed for Stockholm Syndrome or enough sense to shut up such that they get out of the way of progress.

This is the minefield/mind-field blacks in STEM have to navigate. Teachers, counselors and what should be "role models" feel an almost instinctive, no: tribal obligation to reinforce the status quo. They will say hateful, hurtful, disappointing things to diminish you; to "keep you in your place." A cursory review of history had only the comfortable roles of the buck boy, mammy, sex slave and step-n-fetch for the African Diaspora. The system reinforces itself by backlash politics, cognitive dissonance and a propagandized, false narrative of history that makes the descendants of the original perpetrators "feel good." Like a membrane disturbed and a nerve throbbed, it responds with cold, robotic efficiency.

This time, it's different. We've taken time out from the orgy of violent shooting incidents our news would report and naval gaze on until the next shiny object; the next shooting. We just couldn't take a break from the 401 year orgy of knees-on-necks, even during a pandemic: it's endemic to the American experiment, that currently, is not giving the results posed by the original hypothesis.

"For we wrestle not against flesh and blood, but against principalities, against powers, against the rulers of the darkness of this world, against spiritual wickedness in high places." Ephesians 6:12

No truer words uttered at George Floyd's home going. He is NOT, however, a martyr:

1: a person who voluntarily suffers death as the penalty of witnessing to and refusing to renounce a religion 2: a person who sacrifices something of great value and especially life itself for the sake of principle

George Floyd is not a Messianic figure. He never wanted to be. He was a man, like all of us, with his flaws, horrible choices and sins. He was a man that like any man, can learn from his sins and seek redemption, if he so chose. He was a man that had a little brother and children that looked up to him. He was a man that wanted to breathe.

Perhaps, STEM has finally inhaled the stench of racism, and instead of spraying Febreze to mask the odor, found it finally, rancid. Perhaps it will exhale in meetings to come, solutions. This will take time. It will be worth the effort.

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"A Whole New Universe"...

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A Cryo-EM map of the protein apoferritin. Credit: Paul Emsley/MRC Laboratory of Molecular Biology

 

Topics: Biology, Cryogenic-Electron Microscopy, Materials Science, Nanotechnology

A game-changing technique for imaging molecules known as cryo-electron microscopy has produced its sharpest pictures yet — and, for the first time, discerned individual atoms in a protein.

By achieving atomic resolution using cryogenic-electron microscopy (cryo-EM), researchers will be able to understand, in unprecedented detail, the workings of proteins that cannot easily be examined by other imaging techniques, such as X-ray crystallography.

The breakthrough, reported by two laboratories late last month, cements cryo-EM’s position as the dominant tool for mapping the 3D shapes of proteins, say scientists. Ultimately, these structures will help researchers to understand how proteins work in health and disease, and lead to better drugs with fewer side effects.

“It’s really a milestone, that’s for sure. There’s really nothing to break anymore. This was the last resolution barrier,” says Holger Stark, a biochemist and electron microscopist at the Max Planck Institute for Biophysical Chemistry in Göttingen, Germany, who led one of the studies1. The other2 was led by Sjors Scheres and Radu Aricescu, structural biologists at the Medical Research Council Laboratory of Molecular Biology (MRC-LMB) in Cambridge, UK. Both were posted on the bioRxiv preprint server on 22 May.

“True ‘atomic resolution’ is a real milestone,” adds John Rubinstein, a structural biologist at the University of Toronto in Canada. Getting atomic-resolution structures of many proteins will still be a daunting task because of other challenges, such as a protein’s flexibility. "These preprints show where one can get to if those other limitations can be addressed,” he adds.

‘It opens up a whole new universe’: Revolutionary microscopy technique sees individual atoms for first time

Ewen Callaway, Nature

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Dragons and Dystopias...

 

Topics: African Americans, Diaspora, International Space Station, Octavia Butler, Science Fiction, Spaceflight

A casual search on this blog, it's not the first time I've invoked Octavia Butler as an observer of our times, and it likely won't be the last.

 

Octavia Butler’s tenth novel, “Parable of the Sower,” which was published in 1993, opens in Los Angeles in 2024. Global warming has brought drought and rising seawater. The middle class and working poor live in gated neighborhoods, where they fend off the homeless with guns and walls. Fresh water is scarce, as valuable as money. Pharmaceutical companies have created “smart drugs,” which boost mental performance, and “pyro,” a pill that gives those who take it sexual pleasure from arson. Fires are common. Police services are expensive, though few people trust the police. Public schools are being privatized, as are whole towns. In this atmosphere, a Presidential candidate named Christopher Donner is elected based on his promises to dismantle government programs and bring back jobs.

 

“Parable of the Sower” unfolds through the journal entries of its protagonist, a fifteen-year-old black girl named Lauren Oya Olamina, who lives with her family in one of the walled neighborhoods. “People have changed the climate of the world,” she observes. “Now they’re waiting for the old days to come back.” She places no hope in Donner, whom she views as “a symbol of the past to hold onto as we’re pushed into the future.” Instead, she equips herself to survive in that future. She practices her aim with BB guns. She collects maps and books on how Native Americans used plants. She develops a belief system of her own, a Darwinian religion she names Earthseed.

The sequel, “Parable of the Talents,” published in 1998, begins in 2032. By then, various forms of indentured servitude and slavery are common, facilitated by high-tech slave collars. The oppression of women has become extreme; those who express their opinion, “nags,” might have their tongues cut out. People are addicted not only to designer drugs but also to “dream masks,” which generate virtual fantasies as guided dreams, allowing wearers to submerge themselves in simpler, happier lives. News comes in the form of disks or “news bullets,” which “purport to tell us all we need to know in flashy pictures and quick, witty, verbal one-two punches. Twenty-five or thirty words are supposed to be enough in a news bullet to explain either a war or an unusual set of Christmas lights.” The Donner Administration has written off science, but a more immediate threat lurks: a violent movement is being whipped up by a new Presidential candidate, Andrew Steele Jarret, a Texas senator and religious zealot who is running on a platform to “make American great again.”

Octavia Butler's Prescient Vision of a Zealot Elected to "Make America Great Again," Abby Aguirre, New Yorker, 2017

 

In "Sower," one of the distinct things I recall is the juxtaposition between advancement and debasement; triumph and depravity. While civilization on Earth was practically going to shit in the novel, I remember from the novel, we discover microbial life on Mars, which is predicted to be the extraterrestrial life we'll likely discover on the red planet. The Moon Landing - that conspiracy theorists don't think happened, and likely won't think the next one led by commercial space vehicles isn't a forgery - occurred in 1969: it was the year after the Fair Housing Act and the assassinations of Martin Luther King, followed by the presidential candidate that announced the sad news, Robert F. Kennedy. It was the year the Original Star Trek was cancelled, "boldly going" into syndication, convention and science fiction mythology; a vison of us surviving to be our better angels. We were still in the Civil Rights Era, and fighting for the rights to be human. On that year, mankind walked on the moon, but specifically European men, as African American astronauts only appeared as extras along William Shatner and Leonard Nimoy, or in prosthetic makeup so you couldn't tell what culture they were from. Guy Bluford, Ron McNair and others had yet to appear on the scene, then and now a small selected group of explorers.

 

I watched the launch of SpaceX, marveling at its sleekness, benefiting from transistors and the march of Moore's law to the nanoscale. It was a day after riots for the deaths of George Floyd, Breonna Taylor and Ahmaund Aubrey. The scientists and technicians in Mission Control were wearing masks acknowledging the pandemic; the president* and vice president* were playing their "macho-tough-guy" shtick.

*: indicative of installed puppets by Putin.

 

Rockets, moon shots

Spend it on the have nots

Money, we make it

'Fore we see it you take it

Oh, make you wanna holler

The way they do my life

Make me wanna holler

The way they do my life

This ain't livin', this ain't livin'

No, no baby, this ain't livin'

No, no, no

Marvin Gaye, "Inner City Blues," Genius Lyrics

 

A rat done bit my sister Nell

With whitey on the moon

Her face and arms began to swell

And whitey's on the moon

I can't pay no doctor bills

But whitey's on the moon

Ten years from now I'll be payin' still

While whitey's on the moon

The man just upped my rent last night

Cause whitey's on the moon

No hot water, no toilets, no lights

But whitey's on the moon

Gil Scott-Heron, "Whitey on the Moon," Genius Lyrics

 

We can no longer afford to worship the god of hate or bow before the altar of retaliation. The oceans of history are made turbulent by the ever-rising tides of hate. And history is cluttered with the wreckage of nations and individuals that pursued this self-defeating path of hate. As Arnold Toynbee says:

 

Love is the ultimate force that makes for the saving choice of life and good against the damning choice of death and evil. Therefore the first hope in our inventory must be the hope that love is going to have the last word (unquote).

We are now faced with the fact, my friends, that tomorrow is today. We are confronted with the fierce urgency of now. In this unfolding conundrum of life and history, there is such a thing as being too late. Procrastination is still the thief of time. Life often leaves us standing bare, naked, and dejected with a lost opportunity. The tide in the affairs of men does not remain at flood -- it ebbs. We may cry out desperately for time to pause in her passage, but time is adamant to every plea and rushes on. Over the bleached bones and jumbled residues of numerous civilizations are written the pathetic words, "Too late." There is an invisible book of life that faithfully records our vigilance or our neglect. Omar Khayyam is right: "The moving finger writes, and having writ moves on."

We still have a choice today: nonviolent coexistence or violent co-annihilation.

Beyond Vietnam -- A Time to Break Silence, Martin Luther King, Jr., Riverside Church, NYC, April 4, 1967 (he would be assassinated April 4, 1968)

 

Poets in many spaces have earned the quaint acronym: "prophets of eternal truths." As prophets, Gaye, Heron and King made the same observation of their time, that it was obscene to attain such technological triumphs while letting income inequality, rampant militarism, racial unrest and societal disparity go as unchallenged as established on Plymouth Rock. Prophecy isn't prediction as much as it is warning: it is usually written as suggested course-correction, not inevitable conclusion.

A global empire was gotten initially with sugar cane and cotton, on land looted from First Nation peoples, the same who helped the colonists survive their first winter - they were repaid with near extinction. The land was looted from Mexicans, the theft memorialized in jingoism and sloganeering: "remember the Alamo." The land was cultivated by kidnapped peoples from the African continent. The looters wrote us all off as savages, uncivilized, unintelligent, rapists, drug dealers, animals, and took their sexual pleasures - heterosexually, homosexually and depraved pedophilia - with their captive property. Mulatto children typically worked in the master's house, but acknowledged their fathers like they acknowledged his white children: sir and ma'am, so ingrained Floyd used "I can't breath, sir" to the assassin sitting on his neck. Science moved forward during these years, a proof that it can advance even in the midst of a nation's depravity.

Sleek, Dragon SpaceX craft can dock with International Space Stations, while below cities burn in dystopia and a madman mean-girl tweets from the loo. As "comforter-in-chief," he is consistently missing in action, befitting a five-deferment draft dodger.

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The Talk (re-posted)...

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Topics: African Americans, History, Diaspora, Diversity in Science, Women in Science

Originally published February 27, 2017, during Black History Month. We are reeling from George Floyd, Breonna Taylor and Ahmaund Aubrey. "I can't breathe" isn't a cliche: it's a statement of continual trauma, perpetual PTSD from 1619 to present day. We can't breathe from the 82 black boys and men killed before, and now during a global pandemic. We can't breathe from armed gunman shouting at police and threatening lawmakers in Michigan, and unarmed, pissed off demonstrators getting maced, rubber bullets and flash bombed after a murder in the same state Philando Castile lost his life in for a concealed handgun licence. It is building a nation, but not taking part of its advantages fully. It is a relationship to a maniacal, misogynistic, patriarchal, racist, sociopathic system that is determined we nonwhite  "stay in our places" - pariah to the rest of the nation founded on genocide, kidnapping and domestic terrorism - in abject fear, all the while masking quite poorly their own stated, pseudoscientific conspiratorial fears of genetic annihilation. Since we all share the same planet, and I see no starships in orbital shipyards under construction, the only thing their inane fears may bring to apocalyptic destruction is the human species.

 

 

*****Re-post with additions*****

 

The talk is painful to do and painful still to recall. My talk was based on being slammed into a wall of plastic model cars and toys at King's Department Store (see: "Old Tapes" below).

 

My boys... didn't take the story well. Though ten years apart, their reactions were the same: they were angry, hurt, confused as to why such a thing could happen to their "Pop." Watching this again, in the modern context brought back painful memories:

 

 

Despite there and my tears, I had to deliver "the talk," the speech that transcends political party affiliations that every black parent has to relay to their children: fathers to sons; mothers to daughters; uncles and aunts to nieces and nephews; "Big Mommas," and Paw-Paws to grand and great-grandchildren. Despite their tears, my oldest son and his wife will have to deliver "the talk" to our granddaughter, now accustomed to a world in which daycare workers must wear masks; a world where she will likely be judged by the color of her skin, her gender and not the content of her character.

 

The Preamble to the US Constitution:

 

We the people of the United States, in order to form a more perfect union, establish justice, insure domestic tranquility, provide for the common defense, promote the general welfare, and secure the blessings of liberty to ourselves and our posterity, do ordain and establish this Constitution for the United States of America.

 

Posterity (noun): 1: the offspring of one progenitor to the furthest generation, 2: all future generations. Merriam-Webster

 

That's what "the talk" is about. It's probably the purist act of citizenship since 1865, as well as love. It says our children matter to "us"; that like most parents of any generation, we'd like to see them grow, mature and have a life of meaning and children themselves if they want. It does not sound like the realm, attitude or philosophy of thugs: it sounds like the realm of citizens. If indeed "all lives mattered," it would not be necessary.

 

This is the darker history of American exceptionalism. A segment of citizenry - be they democrats or republicans - must give a safety brief to their children for walking out the door into the dominant society to ensure their safe return. Because apparently, that's not guaranteed due to a preponderance of Melanin and an equal preponderance of the assumption guilty-while-black.

 

When the talk becomes a thing we discuss in history books, we'll be a free nation; we'll be America, the Beautiful, definitively.

 

I will consider my life a blessing to have my sons live full lives, and be allowed to do what I had to do with their Grandpa, Robert Harrison Goodwin after August 26, 1999, and their Grandma Mildred Dean Goodwin after May 7, 2009:

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To Robert Harrison Goodwin (Pop/Grandpa), Third Class Petty Officer, United States Navy Veteran, World War II -my first martial arts instructor (boxing). I hope you like what your daughter-in-law and I have done with your grandsons (Real Estate/Civil Engineering), and now, your great-granddaughter. They are, after all, your posterity. We love you and mom always, "Chief."

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Robert H. Goodwin is kneeling, lower left.

Griot Poet blog: "Old Tapes"
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