BLOGS

Artist's rendition of a future colony on Mars., e71lena via Shutterstock

Topics: Applied Physics, Energy, Mars, Space Exploration

(Inside Science) -- Mars is known for its dust storms, which can cause problems for lander equipment and block out the sun that fuels solar panels. These punishing storms, which can last for weeks, have already caused damage to equipment and even killed NASA’s Opportunity rover. But they could also be dangerous to astronauts on the ground, who would rely on solar power for oxygen, heat, and water cleansing during future missions.

Vera Schorbach, a professor of wind energy at the Hamburg University of Applied Sciences in Germany, was curious to see whether wind turbines could harness the power of these storms, filling in for solar panels on the Red Planet during times of need.

"I asked myself, 'Why don't they have a wind turbine if they have dust storms,'" said Schorbach, the lead author of a study about the potential for wind power on Mars published recently in the journal Acta Astronautica.

Could martian dust storms help astronauts keep the lights on? Joshua Rapp Leam, Astronomy/Inside Science

A unique take on the graphic novel, Infinitum by Tim Fielder, is a stunning masterwork of science fiction. A hardcover book with clear and detailed graphics (one panel per page), Infinitum follows the never-ending life of Aja Oba, a king and legend of a man. It begins in his kingdom in Africa, where he longs for an heir, but his Queen is unable to bear children. Knowing that he has a child with one of his lovers, he takes the child from his mother, even as she begs Aja Oba not to. For this act, the lover curses Aja Oba. His fate, he can never truly die.

An outstanding leader and military strategist, Aja Oba is cursed to live a continuous life throughout the ages of humankind. His travels take him from Africa to the new world during the slave passage, to several world wars and into the vast future of humanity. Over the centuries, he watches his lovers and children die, while he is cursed to continue living. The artwork is stunning, the story captivating and Aja Oba intriguing to the end…of his life? You’ll have to read to find out. I highly recommend it.

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Black Star by Eric Anthony Glover is a fantastic, action-packed ride about a future Earth. Brilliant scientist, Harper North, and a crew are sent on a mission to find a rare flower that will aid in medical treatment. However, the planet they travel to is hostile: the temperature and environment can change in an instant. Of course, there are challenges: the ship they are on is hit before landing and two crew members die; North escapes the ship but leaves one crew member, still alive but trapped in her lifepod on a burning ship, behind.

Samantha Parrish, the crew member left behind, escapes the burning ship and comes after North. Parrish is an expert at survival and races against time and North to get to the one-person shuttle pod that can escape the planet and return to Earth, hopefully with the rare flower they were sent to retrieve. The battle is on between scientist and survivalist--who will escape and who will be left behind.

Black Star is a wild, fast read with incredible graphics, fast-paced story telling and realistic emotional ups-and-downs along the way. A well-written tale of survival against the elements and against your fellow human. In tough and dark situations, the real inner human comes out.

This was a fabulous read for me. A poetry book melding science fiction, robotics, artificial intelligence, futuristic eras and indescribably more. The Ghettobirds by Bryant O’Hara is a wonderful trip through vivid imaginings of humans surviving in turbulent times, sometimes dark times, but always with a dose of humor and dips into Black, African American and African culture and sayings. This was a delight to read, and I highly recommend it for anyone interested in science fiction and science in fiction.

Some of my favorites were: The Silent Station; Convector Howlers; The Needle, The Record (an absolute must read!); and About the Author, his background and inspiration for The Ghettobirds. This hit-one-out-of-the-ballpark poetry read is sold on Amazon: https://www.amazon.com/Ghettobirds-Bryant-OHara/dp/1642510351/ref=sr_1_10?dchild=1&keywords=The+Ghettobirds&qid=1633277994&sr=8-10

 Pick up your copy today! 

Image source: Merriam-Webster

Topics: Civics, Civil Rights, Existentialism, Fascism, Human Rights

Noun: a chess opening in which a player risks one or more pawns or a minor piece to gain an advantage in position

Ninety percent of Fox Propaganda employees are fully vaccinated. The employees are required to disclose their vaccine status. The network tests the 10% that refuse daily, presumably barring them from the property, and mandating they quarantine if they test positive. For the record: that's more stringent than the Biden administration, which only has a weekly requirement. Even as talking heads push hydroxychloroquine, ivermectin, bear bile, and other quackery to their viewership.

The pawn is the least powerful chess piece, but it can be promoted into any other chess piece (except for a king). As Philidor once said, "Pawns are the soul of chess!" Chess.com

The disdain Rupert Murdock's network has for its viewership is only matched by the congruent ghoulishness of Kevin Q-Carthy, Moscow Mitch, and the death cult crew. The debt ceiling has been with us since 1917, the year before the last pandemic. It has been since the Obama administration, a game of chicken; a hostage tactic. It's not one side of the chessboard or the other: it's the entire field or the republic.

Congress has always restricted federal debt. The Second Liberty Bond Act of 1917 included an aggregate limit on federal debt as well as limits on specific debt issues. Through the 1920s and 1930s, Congress altered the form of those restrictions to give the U.S. Treasury more flexibility in debt management and to allow modernization of federal financing. In 1939, a general limit was placed on federal debt.

Federal debt accumulates when the government sells debt to the public to finance budget deficits and to meet federal obligations or when it issues debt to government accounts, such as the Social Security, Medicare, and Transportation trust funds. Total federal debt is the sum of debt held by the public and debt held by government accounts. Debt also increases when the portfolio of federal loans expands.

Congress has modified the debt limit 14 times since 2001. Congressional Research Service Report

We have now exceeded the death toll of the 1918 flu pandemic. Gaslighting has replaced ideas, emotion has been substituted for substance. The "American Pravda" rage machine found out last year Rage Against the Machine is a political band that probably doesn't favor their worldview. Fox Propaganda and the "gang of Putin" are solely dedicated to killing any bills that help the citizens of the United States, and the world at large, and anything that would make oligarchs and corporations pay the taxes they've dodged in particular. Neither has had any ideas since the "trickledown" 1980s. Income inequality is worse now than in the Gilded Age, with the one percent profiteering off the pandemic. Their wealth is literally built on the bones of 716,849 Americans. By Christmas, we'll be over a million. In a gambit, the Fox viewership/republican constituents' deaths are acceptable losses.

Yet, the criminal enterprise masquerading as a political party in Congress, in statehouses, has an opportunity to regain majority status. Why? Because of the raw exercise of POWER. Appealing to emotion, "owning the libs" haven't improved the lives of their constituents. It has convinced them their "representatives" hate the "others" they hate. It is an addiction to sadistic dopamine. The other acceptable casualty is the federal republic.

It's sad when the problem of 3.5 to 1.5 trillion is solvable with simple math. $3.5T over 10 years is $350B/year. $1.5T over 4 years is $375B/year. Then, Democrats can dare Republicans to run against it in 2022, and 2024. Once Americans experience expanded Medicare, free hearing aids, and glasses for seniors, free childcare, free community college (that will reduce the cost of four-year college), some movement on climate change that they can SEE, and FEEL, the political ads write themselves. This is an example of government functioning to HELP a stated need. Socialism is tax cuts for wealthy individuals, and corporations after failure in the "free market." Socialism is government subsidies to the fossil fuels industry since the Bolshevik Revolution. There would be no logical argument to take away something every American would have experienced in the positive, even though logic for Putin's party has been bereft for some time. Manchin gets what he wants, progressives get what they want. That, in my humble opinion, would be the strategic exercise of power.

If Republicans are a criminal enterprise, they behave like a functional Mafia family, capable of loyalty to the heinous, and in witness to obvious crimes by a chief executive, Omerta. Democrats, for all my support, behave like a herd of "woke" cats with Twitter fingers as itchy as the useless troll, Marjorie Taylor Green. I have called my congressional representative. Politics is the "art of compromise" and the "art of the possible." If you cannot compromise with a recalcitrant cult, do what's possible on your own. You will be RICHLY rewarded for it.

"Pawns are the soul of chess!" An informed citizenry is the soul of democracy.

The depiction of tentacled extraterrestrials (above) in the recent science-fiction film, "Arrival, "indicates divergence from aliens reported by supposed eyewitness accounts. Paramount. Source: Wrinkles, tentacles and oval eyes: How depictions of aliens have evolved, CNN Style

Topics: Astrobiology, Philosophy, SETI, Space Exploration

In my freshman seminar at Harvard last semester, I mentioned that the nearest star to the sun, Proxima Centauri, emits mostly infrared radiation and has a planet, Proxima b, in the habitable zone around it. As a challenge to the students, I asked: “Suppose there are creatures crawling on the surface of Proxima b? What would their infrared-sensitive eyes look like?” The brightest student in class responded within seconds with an image of the mantis shrimp, which possesses infrared vision. The shrimp’s eyes look like two ping-pong balls connected with cords to its head. “It looks like an alien,” she whispered.

When trying to imagine something we’ve never seen, we often default to something we have seen. For that reason, in our search for extraterrestrial life, we are usually looking for life as we know it. But is there a path for expanding our imagination to life as we don’t know it?

In physics, an analogous path was already established a century ago and turned out to be successful in many contexts. It involves conducting laboratory experiments that reveal the underlying laws of physics, which in turn apply to the entire universe. For example, around the same time when the neutron was discovered in the laboratory of James Chadwick in 1932, Lev Landau suggested that there might be stars made of neutrons. Astronomers realized subsequently that there are, in fact, some 100 million neutron stars in our Milky Way galaxy alone—and a billion times more in the observable universe. Recently, the LIGO experiment detected gravitational wave signals from collisions between neutron stars at cosmological distances. It is now thought that such collisions produce the precious gold that is forged into wedding bands. The moral of this story is that physicists were able to imagine something new in the universe at large and search for it in the sky by following insights gained from laboratory experiments on Earth.

How to Search for Life as We Don't Know It, Avi Loeb, Scientific American

The microfiber actuators on the metal mesh collector (top left), under SEM (bottom left), under heat activation (top right), and integrated into an artificial arm (bottom right). | Credit: Qiguang He et al./Science Robotics

Topics: Materials Science, Mechanical Engineering, Nanotechnology, Robotics

A new artificial fiber spun from a polymer called liquid crystal elastomer (LCE) using high-voltage electricity replicates the strength, responsiveness, and power density of human muscle fibers, scientists report. When powered by heat or near-infrared light, the fibers pulled upward and downward or oscillated back and forth.

"Our work may open up an avenue to build soft robotics or soft machines using liquid crystal elastomers as the actuator," the authors write in their paper, published in the August 25 issue of Science Robotics.

When applied to a variety of potential applications, the fiber actuators successfully controlled the pinching motion of a micro-tweezer, directed the movement of a microswimmer and a tiny artificial arm, and pumped fluids into a light-powered microfluidic pump.

Inspired by the utility of tiny fibers in nature, scientists sought to create artificial fibers that could also serve as ubiquitous tools in robotics, as sensors or assistive devices, for example. In the past few years, researchers succeeded in constructing fiber actuators driven by heat or light that are as strong and flexible as natural fibers. However, many of these artificial threads respond to their stimulus very slowly, due to their large size or complex actuation processes. When fibers can respond quickly, there's a trade-off in size or quality; for example, micro-yarns made of carbon nanotubes are fast actuators but aren't as strong as other fibers.

"Animal muscle fiber exhibits superior mechanical properties and actuation performance," said senior author Shengqiang Cai, associate professor of mechanical and aerospace engineering at the University of California, San Diego. "Only a few existing materials show similar actuation behaviors as animal muscle, and the fabrication of fibers from those materials with a size and quality comparable to muscle fiber is not easy."

Electrically Spun Artificial Fibers Match Performance of Human Muscle Fibers, Juwon Song, American Association for the Advancement of Science

Image source: CERN - accelerating science

Topics: CERN, Condensed Matter Physics, Entanglement, Lasers, Quantum Mechanics

Much of modern experimental physics relies on a counterintuitive principle: Under the right circumstances, zapping matter with a laser doesn’t inject energy into the system; rather, it sucks the energy out. By cooling the system to a fraction of a degree above absolute zero, one can observe quantum effects that are otherwise invisible.

Laser cooling works like a charm, but only when a system’s ladder of quantum states is just right. Atoms of alkali metals and a few other elements are ideal. Molecules, with their multitudes of energy levels, pose a much greater challenge. And fundamental particles such as protons, which lack internal states altogether, can’t be laser-cooled at all.

Nevertheless, there’s a lot of interest in experimenting on protons at low temperature—in particular, precisely testing how their mass, magnetic moment, and other properties compare with those of antiprotons. Toward that end, the Baryon Antibaryon Symmetry Experiment (BASE) collaboration has now demonstrated a method for using a cloud of laser-cooled beryllium ions to sympathetically cool a single proton, even when the proton and ions are too distant to directly interact.

A superconducting circuit is a cooling teleporter, Johanna L. Miller, Physics Today

Topics: Diversity in Science, NASA, Space Exploration, Spaceflight, SpaceX, Star Trek

Dr. King revealed to Nichols that TOS was the only show that he and his wife, Coretta, allowed their little children to stay up and watch. Further, he told Nichols what the show meant to him personally and detailed the importance of her having created a character with "dignity and knowledge." Nichols took it all in and finally said, “Thank you so much, Dr. King. I’m really going to miss my co-stars.” Dr. King's smile, Nichols recalled, vanished from his face.

"He said, 'What are you talking about?'" the actress explained. "I told him. He said, 'You cannot,' and so help me, this man practically repeated verbatim what Gene said. He said, 'Don’t you see what this man is doing, who has written this? This is the future. He has established us as we should be seen. Three hundred years from now, we are here. We are marching. And this is the first step. When we see you, we see ourselves, and we see ourselves as intelligent and beautiful and proud.' He goes on and I’m looking at him and my knees are buckling. I said, 'I…, I…' And he said, 'You turn on your television and the news comes on and you see us marching and peaceful, you see the peaceful civil disobedience, and you see the dogs and see the fire hoses, and we all know they cannot destroy us because we are there in the 23rd century.'

Nichelle Nichols Remembers Dr. King, the StarTrek.com staff

Note: At this posting, she made history yesterday.

Sian Proctor is making history as the first-ever Black female spacecraft pilot. 

Proctor, a geoscientist, artist, and science communicator, has been paving the way in the space sector for decades. Now, years after being a finalist in NASA's astronaut candidate program back in 2009, she is realizing her dream of becoming an astronaut as she launches to orbit with the Inspiration4 mission tonight (Sept. 15).

While the mission itself is making history as the first all-civilian mission to launch to orbit, Proctor is accomplishing a major first herself as the first Black female spacecraft pilot. 

"I'm really grateful to be here and to have this opportunity," Proctor said Sept. 14 during a news conference with reporters. "There have been three Black female astronauts that have made it to space, and knowing that I'm going to be the fourth means that I have this opportunity to not only accomplish my dream but also inspire the next generation of women of color and girls of color and really get them to think about reaching for the stars and what that means."

Sian Proctor makes history with SpaceX's Inspiration4 as first-ever Black female spacecraft pilot, Chelsea Gohd, Space.com

Topics: Civics, Civil Rights, Climate Change, COVID-19, Existentialism, Fascism, Human Rights

In a speech 40 years ago to a group of conservative preachers, Heritage Foundation founder Paul Weyrich said, “Now many of our Christians have what I call the ‘goo-goo syndrome.’ Good government. They want everybody to vote. I don’t want everybody to vote. Elections are not won by a majority of people. They never have been from the beginning of our country, and they are not now.

“As a matter of fact,” he continued, “our leverage in the elections quite candidly goes up as the voting populace goes down.”

Weyrich’s idea continues to animate the GOP today. In dismissing a Democratic push for reforms, including vote-by-mail, same-day registration, and early voting to assist state-run elections in the midst of the deadly COVID-19 pandemic, Donald Trump opined, “They had things, levels of voting that if you’d ever agreed to it, you’d never have a Republican elected in this country again.”

Starting with Nixon’s “Southern Strategy” in 1968, through Weyrich’s candid acknowledgment in 1980, to Donald Trump’s numerous rants, the GOP has consistently stood against reasonable voter registration laws and fair and equitable access to the polls — because they know they lose in a battle of ideas.

Wake up, folks: the campaign against democracy continues

Bill Dwyer, Oak Park, and River Forest Letters to the Editor, Opinion: Wednesday Journal
November 18, 2020, Updated February 11, 2021

The modern "gang of Putin" is Paul Weyrich's wet dream. There is a through-line from Barry Goldwater to Weyrich, Weyrich to Nixon, Nixon to Reagan, Reagan to Orange Satan. Goldwater got some disingenuous ads against him, painting him as crazy enough to start a thermonuclear war. Lyndon Baines Johnson won 486 electoral votes to Goldwater's 52. It was then Goldwater, years before Watergate, coined "you've got to hunt where the ducks are." The ducks were the disaffected southern Dixiecrats in deep depression because Civil Rights and Voting Rights from the US Constitution were being extended to African Americans. When you have privilege, equal justice seems like persecution. Privilege is a kind of willful blindness. For white supremacist power, party insiders weren't, and aren't, willing to remove the scales.

Former President George W. Bush indict(ed) the January 6, 2021, attempted coup in his remarks at the 20-year anniversary observance of 9/11. Bush, however, appointed federal judges during his tenure in a nod to Goldwater, Weyrich, and Nixon's "Southern Strategy." George W. Bush signed the reauthorization of the Voting Rights Act when it was a bipartisan affair: it is now seen as existential for Democrats, and disposable for Republicans. The 2000 election was controversial: Bush won the electoral college and lost the popular vote, the second Republican presidential candidate to do so in this century. His party's nominees have lost the popular vote in seven out of eight presidential elections, and, by their admission, they are demographically shrinking. Bush's defense attorneys in Florida were Chief Justice John Roberts, and Justices Brett Kavanaugh, and Amy Coney Barrett, three of five judges appointed by presidents who lost the popular vote. The Patriot Act was seen as government overreach into civil liberties and birthed a lot of blogs on the left as mainstream media ignored it for access journalism. We're reeling from the expense of the Afghanistan and Iraq Wars, one too long in duration, and the other added via obfuscation. He may not have been as extreme as we currently see his party exhibiting, but he did inadvertently till the soil of institutional doubt.

It is obvious today that America has defaulted on this promissory note insofar as her citizens of color are concerned. Instead of honoring this sacred obligation, America has given its colored people a bad check, a check that has come back marked "insufficient funds." But we refuse to believe that the bank of justice is bankrupt. We refuse to believe that there are insufficient funds in the great vaults of opportunity of this nation. So we have come to cash this check, a check that will give us upon demand the riches of freedom and security of justice. We have also come to his hallowed spot to remind America of the fierce urgency of Now.

Dr. Martin Luther King Jr., "I Have A Dream," August 28, 1963

"The Wages of Whiteness" a book by David R. Roediger I use to juxtapose the check America is still trying to cash with African Americans without sufficient funds. The wage of this whiteness was supposed to have sufficiency in perpetuity. All it needed were pariahs that they could blame for any societal faux pas: the economy and welfare were the faults of "young bucks," and "welfare queens," not oligarchs and tax cheats. We were patriotic and resolute until Iran-Contra occurred, flooding weapons to the Contras, and drugs to Compton. Culture wars were always the right's "whitewashed sepulchers," dead tombs with the façade of rose-covered balconies, and rainbow farts out of unicorns. The pariah label was extended to all BIPOC, and karma is making them the majority by 2042. The check for the balance of supremacy is draining inexorably from the church bank account of the whitewashed sepulcher.

Texas is a laboratory for instigating "The Handmaid's Tale." Second Amendment rights trumps (pun intended) bodily autonomy. South Dakota's governor always looks high, giving the middle finger to masks and Lakota sacred grounds on the 4th of July during the alpha phase of the pandemic, and Florida's governor has the well-earned nickname "Death Santis" that will stick in his bid for re-election, and higher office. A heat map of COVID hotspots in California is almost an exact replica of the electoral areas that started the California recall. You can replicate that map in red states versus blue states. The entire party has devolved into a Dunning-Kruger death cult.

Unskilled and Unaware of It: How Difficulties in Recognizing One's Own Incompetence Lead to Inflated Self-Assessments, Justin Kruger and David Dunning, Cornell University

Abstract

People tend to hold overly favorable views of their abilities in many social and intellectual domains. The authors suggest that this overestimation occurs, in part, because people who are unskilled in these domains suffer a dual burden: Not only do these people reach erroneous conclusions and make unfortunate choices, but their incompetence robs them of the metacognitive ability to realize it. Across 4 studies, the authors found that participants scoring in the bottom quartile on tests of humor, grammar, and logic grossly overestimated their test performance and ability. Although their test scores put them in the 12th percentile, they estimated themselves to be in the 62nd. Several analyses linked this miscalibration to deficits in metacognitive skill, or the capacity to distinguish accuracy from error. Paradoxically, improving the skills of participants, and thus increasing their metacognitive competence, helped them recognize the limitations of their abilities.

After Watergate, the right deliberately designed an echo chamber to tell itself everything they wanted to hear: good, not bad, propaganda not history, fiction, not reality. Karl Rove told reporter Ron Suskind: "The aide said that guys like me were 'in what we call the reality-based community,' which he defined as people who 'believe that solutions emerge from your judicious study of discernible reality.' [...] 'That's not the way the world really works anymore,' he continued. 'We're an empire now, and when we act, we create our own reality. And while you're studying that reality—judiciously, as you will—we'll act again, creating other new realities, which you can study too, and that's how things will sort out. We're history's actors...and you, all of you, will be left to just study what we do.'" There is a district in Texas that every two years, consciously reelects Louie Gohmert to the US House of Representatives, the "disparage my asparagus" former judge, and lawyer. Nonplussed initially, Former Attorney General Eric Holder responded with the sickest burn a year later in 2014: "good luck with your asparagus."

North Carolina US Republican Representative Madison Cawthorne crashed a school board meeting in Henderson, NC to troll Governor Roy Cooper about masks. Key point: he wasn't there. Couple that with his abysmal grades the one year he attended college, at this point, I cannot take him, or the rest of his party seriously. I may not have been a fan of Ronald Reagan, but Reaganism stood for something; Trumpism is sadistic Seinfeld. They're all white grievance minstrels, performance artists, professional trolls, and nihilists. "Owning the libs" is all they live for. The asylum inmates running for office currently are mean-girl teenagers running on the population, and likes of their Instagram and Twitter accounts. Their platform is an empty wagon: making a lot of noise, and doing nothing.

"Idiocracy" did not take 500 years of political Entropy: it just took the desperation of a party that sees its power waning, and is clinging to power at all cost, even if that wage paid is the republic.

“The fundamental cause of the trouble is that in the modern world the stupid are cocksure while the intelligent are full of doubt.”
― Bertrand Russell

Surfing excitons: Cambridge’s Alexander Sneyd with the transient-absorption microscopy set-up. (Courtesy: Alexander Sneyd)

Topics: Alternate Energy, Applied Physics, Materials Science, Nanotechnology, Solar Power

Organic solar cells (OSCs) are fascinating devices where layers of organic molecules or polymers carry out light absorption and subsequent transport of energy – the tasks that make a solar cell work. Until now, the efficiency of OSCs has been thought to be constrained by the speed at which energy carriers called excitons to move between localized sites in the organic material layer of the device. Now, an international team of scientists led by Akshay Rao at the UK’s University of Cambridge has shown that this is not the case. What is more, they have discovered a new quantum mechanical transport mechanism called transient delocalization, which allows OSCs to reach much higher efficiencies.

When light is absorbed by a solar cell, it creates electron-hole pairs called excitons and the motion of these excitons plays a crucial role in the operation of the device. An example of an organic material layer where light absorption and transport of excitons takes place is in a film of well-ordered poly(3-hexylthiophene) nanofibers. To study exciton transport, the team shone laser pulses at such a nanofiber film and observed its response.

Exciton wave functions were thought to be localized due to strong couplings with lattice vibrations (phonons) and electron-hole interactions. This means the excitons would move slowly from one localized site to the next. However, the team observed that the excitons were diffusing at speeds 1000 times greater than what had been shown for similar samples in previous research. These speeds correspond to a ground-breaking diffusion length of about 300 nm for such crystalline films. This means energy can be transported much faster and more efficiently than previously thought.

Exciton ‘surfing’ could boost the efficiency of organic solar cells, Rikke Plougmann, Physics World

Magnetic prosthetic: A magnetic sensing array enables a new tissue tracking strategy that could offer advanced motion control in artificial limbs. (Courtesy: MIT Media Lab/Cameron Taylor/Vessel Studios)

Topics: Biotechnology, Magnetism, Materials Science, Medicine, Nanotechnology, Robotics

Cultural reference: The Six Million Dollar Man, NBC

In recent years, health and fitness wearables have gained popularity as platforms to wirelessly track daily physical activities, by counting steps, for example, or recording heartbeats directly from the wrist. To achieve this, inertial sensors in contact with the skin capture the relevant motion and physiological signals originating from the body.

As wearable technology evolves, researchers strive to understand not just how to track the body’s dynamic signals, but also how to simulate them to control artificial limbs. This new level of motion control requires a detailed understanding of what is happening beneath the skin, specifically, the motion of the muscles.

Skeletal muscles are responsible for almost all movement of the human body. When muscle fibers contract, the exerted forces travel through the tendons, pull the bones, and ultimately produce motion. To track and use these muscle contractions in real-time and with high signal quality, engineers at the Massachusetts Institute of Technology (MIT) employed low-frequency magnetic fields – which pass undisturbed through body tissues – to provide accurate and real-time transcutaneous sensing of muscle motion. They describe their technique in Science Robotics.

Magnetic beads inside the body could improve control of bionic limbs, Raudel Avila is a student contributor to Physics World

GIF source: Link below

Topics: Computer Science, Politics, Social Media

To build the metaverse, Facebook needs us to get used to smart glasses.

Last week Facebook released its new $299 “Ray-Ban Stories” glasses. Wearers can use them to record and share images and short videos, listen to music, and take calls. The people who buy these glasses will soon be out in public and private spaces, photographing and recording the rest of us, and using Facebook’s new “View” app to sort and upload that content.

My issue with these glasses is partially what they are, but mostly what they will become, and how that will change our social landscape.

How will we feel going about our lives in public, knowing that at any moment the people around us might be wearing stealth surveillance technology? People have recorded others in public for decades, but it’s gotten more difficult for the average person to detect, and Facebook’s new glasses will make it harder still since they resemble and carry the Ray-Ban brand.

That brand’s trusted legacy of “cool” could make Facebook’s glasses appeal to many more people than Snap Spectacles and other camera glasses. (Facebook also has roughly 2 billion more users than Snapchat.) And Facebook can take advantage of the global supply chain and retail outlet infrastructure of Luxottica, Ray-Ban’s parent company. This means the product won’t have to roll out slowly—even worldwide.

Why Facebook is using Ray-Ban to stake a claim on our faces, S.A. Applin, MIT Technology Review

Image source: link below

Topics: Applied Physics, Einstein, General Relativity, Special Relativity

According to Einstein’s theory of special relativity, first published in 1905, light can be converted into matter when two light particles collide with intense force. But, try as they might, scientists have never been able to do this. No one could create the conditions needed to transform light into matter — until now.

Physicists claim to have generated matter from pure light for the first time — a spectacular display of Einstein’s most famous equation.

This is a significant breakthrough, overcoming a theoretical barrier that seemed impossible only a few decades ago.

What does E=mc² mean? The world’s most famous equation is both straightforward and beyond comprehension at the same time: “Energy equals mass times the speed of light squared.” 

At its most fundamental level, it means energy and mass are various forms of the same thing. Energy may transform into mass and vice versa under the right circumstances. 

However, imagine a light beam transforming into, say, a paper clip, and it seems like pure magic. That’s where the “speed of light squared” factors in. It determines how much energy a paper clip or any piece of matter contains. The speed of light is the factor needed to make mass and energy equal. If every atom in a paper clip could be converted to pure energy, it would generate 18 kilotons of TNT. That’s around the size of the Hiroshima bomb from 1945. 

(Still can’t picture it? Me neither.) 

You can go the other way, too: if you crash two highly energized light particles, or photons, into each other, then you can create energy and mass. It sounds simple enough, but no one has been able to make it happen.

Since they couldn’t accelerate light particles, the team opted for ions and used the Relativistic Heavy Ion Collider (RHIC) to accelerate them at extreme speeds. In two accelerator rings at RHIC, the accelerated gold ions to 99.995% of the speed of light. With 79 protons, a gold ion has a strong positive charge. When a charged heavy ion is accelerated to incredible speeds, a strong magnetic field swirls around it. 

That magnetic field produces “virtual photons.” So, in a roundabout way, they accelerated light particles by piggybacking them on an ion.

When the team sped the ions in the accelerator rings with significant energy, the ions nearly collided, allowing the photon clouds surrounding them to interact and form an electron-positron pair — essentially, matter. They published their work in the journal Physical Review Letters.

Scientists observed what Einstein predicted a century ago, Teresa Carey, Free Think

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

"Nothing in all the world is more dangerous than sincere ignorance and conscientious stupidity." Dr. Martin Luther King Jr.

Today is 203 days after January 6, 2021's attempted coup. "Insurrection" isn't quite as accurate with the passage of time.

Yesterday, the first hearings began, and they were emotional, riveting: angering. Officer Dunn didn't sanitize the word nigger by using "the n-word" because the persons that said it to him didn't stifle their tongues. Sometimes, shock is the best disinfectant.

We are now well in the Delta variant, and the CDC is re-recommending masks. Red states are already fighting mask mandates like this is a recommendation by gunpoint. The CDC cannot mandate anything nationally, they can only recommend an action. They can specify it for federal workers: they can either get the vaccine, or get tested daily, and the PCR test just isn't as painful, or intrusive as the Q-tip swab. The threat of unemployment can inform decisions as well. This whipsaw pain is unnecessary self-immolation. It's dumb. It could have been avoided.

Despite the fact that I am fully vaccinated, I kept all of my masks and hand sanitizer. I had a feeling with the disinformation from Facebook/Fox Propaganda/Russia, and the mini-fascists clone imitators - News Min, QAN, and Dumb Bart, we would go back in time to last year, because if they can't have power, they will induce chaos.

The clown show I expected happened. A crowd of white grievance minstrels assembled in front of the Justice Department during the 1/6 hearings to petition for the release of the (correctly termed by the Capitol Police yesterday, terrorists) said the same after the original Civil War. The boneheads literally having wet dreams on another one should think on this: the British Sterling used to be the global currency before the dollar. An unstable, insanely racist nation would have its currency dropped, replaced by the Yuan without a second thought. White supremacy would rule a no-man's-land equivalent to a shit pile.

Someone ran off Matt Gaetz, and his fellow fascists by simply asking him "are you a pedophile?" Nazis seem only interested in the unborn zygote: when they become living, breathing beings requiring food, clothes, resources, education, and employment, they're either freeloaders of the system depending on their shade of Melanin or if in their pinker culture, jail bait. IF he manages to keep himself out of prison with the white privilege-AMEX card, holiday dinners with his future sister-in-law are going to be dicey.

Gaslighting by narcissists, and willful, conscientious stupidity is apparently the only thing "exceptional" about this oxymoronically named nation. Ragnarok is falling.

I have a foreboding of an America in my children's or grandchildren's time -- when the United States is a service and information economy; when nearly all the manufacturing industries have slipped away to other countries; when awesome technological powers are in the hands of a very few, and no one representing the public interest can even grasp the issues; when the people have lost the ability to set their own agendas or knowledgeably question those in authority; when clutching our crystals and nervously consulting our horoscopes, our critical faculties in decline, unable to distinguish between what feels good and what's true, we slide, almost without noticing, back into superstition and darkness...

The dumbing down of American is most evident in the slow decay of substantive content in the enormously influential media, the 30 second sound bites (now down to 10 seconds or less), lowest common denominator programming, credulous presentations on pseudoscience and superstition, but especially a kind of celebration of ignorance.

Carl Sagan, “The Demon-Haunted World: Science as a Candle in the Dark,” Good Reads

A computer simulation of the structure of the coronavirus SARS-CoV-2.Credit: Janet Iwasa, University of Utah

Topics: Biology, Biotechnology, COVID-19, DNA, Existentialism, Research

The coronavirus sports a luxurious sugar coat. “It’s striking,” thought Rommie Amaro, staring at her computer simulation of one of the trademark spike proteins of SARS-CoV-2, which stick out from the virus’s surface. It was swathed in sugar molecules, known as glycans.

“When you see it with all the glycans, it’s almost unrecognizable,” says Amaro, a computational biophysical chemist at the University of California, San Diego.

Many viruses have glycans covering their outer proteins, camouflaging them from the human immune system like a wolf in sheep’s clothing. But last year, Amaro’s laboratory group and collaborators created the most detailed visualization yet of this coat, based on structural and genetic data and rendered atom-by-atom by a supercomputer. On 22 March 2020, she posted the simulation to Twitter. Within an hour, one researcher asked in a comment: what was the naked, uncoated loop sticking out of the top of the protein?

Amaro had no idea. But ten minutes later, structural biologist Jason McLellan at the University of Texas at Austin chimed in: the uncoated loop was a receptor-binding domain (RBD), one of three sections of the spike that bind to receptors on human cells (see ‘A hidden spike’).

Source: Structural image from Lorenzo Casalino, Univ. California, San Diego (Ref. 1); Graphic: Nik Spencer/Nature

How the coronavirus infects cells — and why Delta is so dangerous, Megan Scudellari, Nature

Topics: Civics, Civil Rights, Climate Change, COVID-19, Environment, Existentialism

Like his more famous contemporary, Spencer was enamored with the idea of evolution. But where Darwin focused on biology, Spencer imagined that evolutionary thinking could be applied much more broadly. In his mind, it governed entire societies. Today, when Spencer is remembered at all, it is usually for inspiring the ideology known as “social Darwinism”: roughly, the idea that the successful deserve their success while those who fail, deserve their failure.

Modern scholars, and the public at large, understandably view this idea with disdain. Philosopher Daniel Dennett has described social Darwinism as “an odious misapplication of Darwinian thinking in defense of political doctrines that range from callous to heinous,” while the journalist Robert Wright said that social Darwinism “now lies in the dustbin of intellectual history.” Today, few read Spencer’s dense and ponderous books, and his ideas are rarely taught. Gregory Claeys, a historian at the University of London, writes that of all the great Victorian thinkers, it is Spencer whose “reputation has now indisputably fallen the farthest.”

Spencer’s view, though mostly anathema now, appealed to influential conservatives and laissez-faire capitalists—among them, the industrialist Andrew Carnegie—just as it angered the socialists of the time. “Spencer hated socialism because he thought socialism was all about protecting the weak,” Lightman says. “To him, that was intervening in the natural unfolding of the evolutionary process.”

The Complicated Legacy of Herbert Spencer, the Man Who Coined ‘Survival of the Fittest’, Dan Falk, Smithsonian Magazine

According to Michael Price in Science Magazine, humans changed from hunter-gatherer (and presumably, wanderer) to communal living about 10,000 years ago. We seemed to vacillate between extremes, and each time, our back-and-forth switch could be traced through the common house mouse (like it or not, we appear stuck with them). Whether we wandered about or gathered harvests, we seemed to fair better with less Ayn Randian selfish worldviews, and more indigenous communal living philosophies.

An article published on the website Earthday.org is more explicit:

Humans and climate change are driving species to extinction at unprecedented rates. To slow or eventually reverse these declines, we need to better manage our land to preserve habitats and secure biodiversity – the variety of life on Earth. To that end, a study published this week confirms what many communities have known for years: To preserve biodiversity, we must turn to indigenous peoples for guidance and management.

The study, published in the journal Environmental Science and Policy, compared levels of biodiversity in thousands of areas in Australia, Brazil, and Canada and was the first of its kind to compare biodiversity and land management on such a large scale. Researchers from the University of British Columbia (UBC) compared 15,621 geotropical areas across three continents, with great variations across climate, species, and geography.

To Save The Planet, We Need Indigenous Perspectives, Earth Day, 2019

We have been ravaged by climate events since Hurricane Katrina in 2005, and have ignored them all. Ebola was the first epidemic we paid attention to and mitigated at its point of origin so that only two Americans died from it. It is therefore unconscionable that the current death toll of the Coronavirus is 623,353, as of this writing. It's likely to be higher when this post appears. 675,000 died during the 1918 flu pandemic. We're not far behind.

Speaking of Ayn Rand: the main idea of "The Fountainhead" was individualism vs. collectivism, or selfishness, versus community. Also, in "Atlas Shrugged," so beloved that former Congressman, and conspiracy theorist Ron Paul and presumably his wife named their son, Senator Rand Paul. "Shrugged" was about "a dystopian United States in which private businesses suffer under increasingly burdensome laws and regulations." "Looters" want to exploit the productivity of innovative industrialists has the not-too-subtle echo of "makers," and "takers."

GOP "leader," Kevin McCarthy saying "85% of Congress is fully vaccinated," so he says, we have no need for a mask mandate in the House. That declaration is a Freudian slip: that means 15% of 435 members of the House, or 65 members are unvaccinated by choice. 435 members of the House go back home sometimes, and presumably, many to Delta variant hot spots. The variant could then be weaponized on Capitol Hill where many of our lawmakers are in their seventies and eighties. The Delta variant can cause "breakthrough infections," and most of the hospitalizations and deaths are from the unvaccinated. There are also long-haul COVID survivors, the severe ones will put a strain on public resources for rehabilitation, and lifetime care. Again, those 65 can carry the Delta variant back to the House, and turn Capitol Hill into a COVID hot spot. With the 1/6 hearings just starting, it might be a cynical, pathological ploy to delay or demolish any hearings on the terrorist insurrection going forward. Only sociopaths could be so diabolical.

Ten thousand years ago, it might have been prudent to identify someone by their tribal markings, dress, and appearance. If you "did not fit in," there were no diversity, equity, and inclusion programs, only suspicion. "Fight, or flight" was wonderful against saber-tooth tigers, but terrible trying to espouse the tenets of a philosophy centered on E Pluribus Unum.

Borders are political constructs, just like race is a social construct. We are the byproduct of migration from the African continent to other areas, and adaption over hundreds of thousands of years. We look different because of the angle of incidence of ultraviolet light, the environment encountered, and the foods we consumed in those environs. We all for the most part have five fingers, five toes, and red blood in our veins. We all have the same needs on the Maslow hierarchy. It's why the Overview effect has such a profound impact on the viewers, but 7.6 billion inhabitants don't have a spare $250,000 for a ten-minute joy ride. The eviction moratorium expires Saturday, with no further extension. I don't think soon-to-be homeless people will care for an Overview effect.

It has to be in our best interest to help developing countries and industrial countries with vaccination rates: every nation has to get to 70% herd immunity, or higher for the safety of the species. If there's one hot spot in the world, there's the possibility of many variants spreading across the globe. It has to be in our best interest to mitigate climate change, and if past the tipping point, or politically not expedient, design our civilization's infrastructure to withstand the storms, power outages, freak winter freezes, floods, and raging fires.

Octavia Butler was an African American science fiction writer that didn't envision starships, except the relativistic kind. Her "Parable of the Sower" did predict a dystopic America devastated by climate change, social unrest, water scarcity, but apparently, in all that dysfunction, in2024 we land on Mars, and discovered microbial life there. We are three years from the date of that fictional nightmare. In the midst of that eerily prescient novel, and series, there was a rediscovery of community, of people helping people, protecting one another.

Social media is a faux community; it has atomized humanity in echo silos. We were prepped for this when television and entertainment became "infotainment," a bastardization, and a pariah to the body politic. BET, CMT, MTV is owned by Viacom, and caters to different audiences, cable news preceded it, and its digital extension is the oxymoron "social media" as humans stare blankly at their smartphones sucking time, and brain cells.

There is vaccine hesitancy among African Americans, decades stinging from the Tuskegee experiment. There is vaccine hesitancy from those who erroneously believe vaccines cause autism (that was refuted in a later paper). There are athletes who will eat what they are told, train as they are told, who now in the NFL have to decide whether to get a mandated COVID vaccine or forfeit games. Despite their nonprofit status, the NFL is a business, and businesses are not democratic.

The same people who deny climate change, are the same people who fought lockdowns. They are the same people who want Confederate monuments to insurrectionists, but history that would correct the record from obfuscations and mythology expunged, canceled. They are the same people who fought masks, and are the same people who don't want to get vaccines because they believe in the "survival of the fittest" scenario, that they will miraculously be the fittest, the luckiest; the living. Like the Texas Lieutenant Governor Dan Patrick volunteering grandparents to die for the economy in the early days of the pandemic. (He's probably not counting himself in that number on the altar of Moloch.)

To survive COVID, and climate change, E Pluribus Unum - out of many, one - has to be cosmopolitan, global. We are all Homo Sapiens, Earthlings, breathing the same air, using the same resources, and will expire on the same planet, as long as it's here, and we are. The United Nations is supposed to be our governing body to do this, a concept that is with its political enemies, conspiracy theories that start with "new world order," and authoritarian tyranny fears, that kind of falls hollow to the experiment in authoritarianism the United States made from 2017 to 2020. It was almost credibly sealed with a coup, on January 6, 2021, had it been competent. The next fascist might be more capable; the next coup might succeed.

For the survival of the species, "survival of the fittest" has to become a part of a selfish past and myth. It's easier to mask, or vaccinate against a pandemic, and mitigate climate change than building superluminal starships defying laws of physics to "escape" our mistakes.

We have to get beyond our learned prejudices, responsible for so much selfishness, sickness, and bloodshed. We need to see each other's survival in all of our best interests. Our empathy needs to evolve.

*****

“We have been forced to a point where we are going to have to grapple with the problems that men have been trying to grapple with through history, but the demands didn't force them to do it. Survival demands that we grapple with them. Men for years now have been talking about war and peace. But now no longer can they just talk about it. It is no longer a choice between violence and nonviolence in this world; it's nonviolence or nonexistence. That is where we are today.” Dr. Martin Luther King Jr.

*****

No man is an island,Entire of itself.Each is a piece of the continent,A part of the main.If a clod be washed away by the sea,Europe is the less.As well as if a promontory were.As well as if a manor of thine ownOr of thine friend's were.Each man's death diminishes me,For I am involved in mankind.Therefore, send not to knowFor whom the bell tolls,It tolls for thee.

"For Whom the Bell Tolls," John Donne, Your Daily Poem