Reginald L. Goodwin's Posts (3116)

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Hawking...


At 2:05 of the trailer, you'll see the words: "behind the world's greatest mind."

Granted, I'm looking forward to this documentary as any geeked physics major would be. I do take some pause to the trailer coining Professor Hawking the title of "greatest mind." He is a great mind, to be sure. The whole "G.O.A.T." thing is a bit of hyperbole to me.

He's overcome quite a lot of obstacles in his harried life, one of which is the shear act of living beyond the original expectations of his lifespan shortened by his disability.

He shows the famous British resolve: "stiff upper lip" determination. I did read "A Brief History of Time" and enjoyed it. I am familiar with the following I saw on Wikipedia:

"Among his significant scientific works have been a collaboration with Roger Penrose on gravitational singularities theorems in the framework of general relativity, and the theoretical prediction that black holes emit radiation, often called Hawking radiation. Hawking was the first to set forth a cosmology explained by a union of the general theory of relativity and quantum mechanics. He is a vocal supporter of the many-worlds interpretation of quantum mechanics.



"He is an Honorary Fellow of the Royal Society of Arts, a lifetime member of the Pontifical Academy of Sciences, and a recipient of the Presidential Medal of Freedom, the highest civilian award in the United States. Hawking was the Lucasian Professor of Mathematics at the University of Cambridge between 1979 and 2009."

 

He had a great science fiction series and several other shows on the Science Channel I enjoyed. Dr. Hawking has lost some scientific wagers though: with Kip Thorne; a "black hole war" with Leonard Susskind and Gerard t'Hooft; most recently with Peter Higgs (of the Higgs Boson).


Professor Hawking is a remarkable man, but still a man, therefore fallible as we all are. To put him on a pedestal does him a disservice, and makes the attainment of a degree in physics or STEM fields the area that is "off limits"; "not normal"; "beyond human capability." I assure you it is not, and as a species, we should get out of boxing ourselves into the "us-versus-them": normals and nerds. Hence my objection to the trailer is in trying to get you to look at it...many may sadly look away.

This is a strange, dichotomous post after Independence Day. I sincerely hope you enjoyed BBQ in moderation and fireworks safely.

I'll still enjoy the documentary, as I hope you do too, mentally filtering hyperbole.
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Nobel...



Alfred Bernhard Nobel (21 October 1833 – 10 December 1896) was a Swedish chemist, engineer, innovator, and armaments manufacturer. He was the inventor of dynamite. Nobel also owned Bofors, which he had redirected from its previous role as primarily an iron and steel producer to a major manufacturer of cannon and other armaments. Nobel held 350 different patents, dynamite being the most famous. He used his fortune to posthumously institute the Nobel Prizes. The synthetic element nobelium was named after him. His name also survives in modern-day companies such as Dynamit Nobel and Akzo Nobel, which are descendants of the companies Nobel himself established...In 1888 Alfred's brother Ludvig died while visiting Cannes and a French newspaper erroneously published Alfred's obituary.[1] It condemned him for his invention of dynamite and is said to have brought about his decision to leave a better legacy after his death.[1][8] The obituary stated, Le marchand de la mort est mort ("The merchant of death is dead")[1] and went on to say, "Dr. Alfred Nobel, who became rich by finding ways to kill more people faster than ever before, died yesterday."[9] Alfred was disappointed with what he read and concerned with how he would be remembered.

 

On 27 November 1895, at the Swedish-Norwegian Club in Paris, Nobel signed his last will and testament and set aside the bulk of his estate to establish the Nobel Prizes, to be awarded annually without distinction of nationality. Wikipedia

The actual web site for the Nobel Prize appears to be down at the moment...


As I walked into the fab I work at, I heard the sound of firecrackers in the distance. Granted, they predate Alfred by several centuries, but the loud banging, the revelry will ensue again tomorrow as I come into work. There is a relation to Nobel, this posting and the 4th.

No one is going to use dynamite thankfully (unless earnestly competing for the Darwin Awards), but in 2011 an estimated 9,600 people were injured by firecrackers according to the Consumer Products Safety Division; some far worse than just injury.

 

Worry not only how you will be remembered, but how you will proceed through life until its end. Personally, I want to check out with the same digits and body parts I checked in with (a little worse for the wear, understandably).

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Quantum Remote Control...

...and, physicists know how to do it! ~!!!~



TECHNOLOGY REVIEW: Teleportation is one of the more extraordinary phenomena in the quantum world. It allows a quantum object, such as a photon or electron, to travel from one location to another without passing through the space in between.



Teleportation is a standard procedure in any decent quantum mechanics laboratory. Physicists use it on a daily basis for quantum communication and quantum computation.



If that sounds exotic, you ain’t seen nothing yet; teleportation is about to get a whole lot weirder. That’s because until now, physicists have only been able to teleport single particles, one at a time. Today, Christine Muschik at the Mediterranean Technology Park in Barcelona and a bunch of mates say they’ve worked out how to teleport quantum stuff continuously.



That will allow them to manipulate one quantum particle while watching the effects occur in another particle elsewhere. That’s essentially quantum remote control.

 

Physics arXiv:
Quantum Teleportation of Dynamics and Effective Interations between Remote Systems

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TSOM...

These three-dimensional tri-gate (FinFET) transistors are among the 3-D microchip structures that could be measured using through-focus scanning optical microscopy (TSOM) - Courtesy, Intel Corporation

Contact: Chad Boutin

301-975-4261



A technique developed several years ago at the National Institute of Standards and Technology (NIST) for improving optical microscopes now has been applied to monitoring the next generation of computer chip circuit components, potentially providing the semiconductor industry with a crucial tool for improving chips for the next decade or more.



The technique, called Through-Focus Scanning Optical Microscopy (TSOM), has now been shown able to detect tiny differences in the three-dimensional shapes of circuit components, which until very recently have been essentially two-dimensional objects. TSOM is sensitive to features that are as small as 10 nanometers (nm) across, perhaps smaller—addressing some important industry measurement challenges for the near future for manufacturing process control and helping maintain the viability of optical microscopy in electronics manufacturing.

 

NIST:
Microscopy Technique Could Help Computer Industry Develop 3-D Components

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A Nobel Twofer...

A Student’s Guide to Einstein’s Major Papers, Robert E. Kennedy, Oxford U. Press, New York, 2012. $45.00 (296 pp.). ISBN 978-0-19-969403-7



Physics professors often refer to Albert Einstein’s work when teaching relativity, quantum mechanics, or statistical mechanics. I have never given his original papers to my students to supplement their learning, but that will change. I appreciate the importance of having undergraduates read classic and original physics literature, and I have tried to inspire my experimental physics students by assigning Albert Michelson’s 1880 description of his measurement of the speed of light or Robert Millikan’s 1911 oil-drop paper. I have egged the students on to try and do better than Michelson or Millikan using modern technology.



Some of Einstein’s classic papers could also motivate undergraduates, if the physics were fully explained. For instructors who choose to expose their students to Einstein’s scientific articles, Robert E. Kennedy’s A Student’s Guide to Einstein’s Major Papers will be a welcome supplement. Kennedy focuses on Einstein’s four classic papers published in the annus mirabilis of 1905, his doctoral thesis (published in 1906), and his 1916 general relativity paper.

 

Lectures on Quantum Mechanics, Steven Weinberg, Cambridge U. Press, New York, 2013. $75.00 (358 pp.). ISBN: 978-1-107-02872-2



Steven Weinberg, a Nobel laureate for his contributions to the standard model of elementary particles, has a well-deserved reputation as a writer who draws on great depths of physical insight to produce exceptionally clear prose. Until now, his books have been intended either for a general or advanced audience. For general readers, his books include The First Three Minutes: A Modern View of the Origin of the Universe (Basic Books, 1977) and Lake Views: This World and the Universe (Harvard University Press, 2010). For advanced readers, he has written Gravitation and Cosmology (Wiley, 1972), the three-volume Quantum Theory of Fields (Cambridge University Press, 2000), and Cosmology (Oxford University Press, 2008).



Weinberg now turns his attention to a core subject in physics with Lectures on Quantum Mechanics, a text based on a year-long course he has taught to first-year graduate students. The book begins with a 27-page “Historical Introduction” that concisely and elegantly summarizes the development of quantum physics, including an explication of Werner Heisenberg’s matrix mechanics and its equivalence to Erwin Schrödinger’s wave mechanics. We also find some little-known historical tidbits, such as who coined the word “photon.”

Celebrities, sports stars...bah. I have an autographed copy of "The First Three Minutes" (hardcover) and met Professor Weinberg. Nope...not parting with it. You won't find it on E-bay. Willing it to my heirs...Smiley
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NEXT...

Ion propulsion drive - NASA

CLEVELAND - A NASA advanced ion propulsion engine has successfully operated for more than 48,000 hours, or 5 and a half years, making it the longest test duration of any type of space propulsion system demonstration project ever.

 

The thruster was developed under NASA's Evolutionary Xenon Thruster (NEXT) Project at NASA's Glenn Research Center in Cleveland. Glenn manufactured the test engine's core ionization chamber. Aerojet Rocketdyne of Sacramento, Calif., designed and built the ion acceleration assembly.

 

The 7-kilowatt class thruster could be used in a wide range of science missions, including deep space missions identified in NASA's Planetary Science Decadal Survey.


This is a gridded electrostatic ion thruster, so it uses the Coulomb force to accelerate the Xenon ions in the direction of the electrostatic field. OK, it's not Warp Drive, but they are working on that too. Chemical rockets will not allow us to even explore the solar system in reasonable time spans, and we're too consumed with immediate gradification/ROI (return on investment) to stomach missions that could take months, decades or centuries - those being one-way trips obviously.

 

NASA: NASA Thruster Achieves World-Record 5+ Years of Operation

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Why Physics...



Honestly for myself, it was a challenge and the hardest thing "on the yard" I could think to study. It was an excuse as a young man to dress strangely, taking full advantage of the "socially inept Nerd" myth - walking around in an Army field jacket and a floppy yellow hat (I sadly still own) - and construct a wall between myself and others. I can see where that was off-putting and not helpful in getting more to at least have an appreciation for science. My mea culpa.

Physics requires a curiosity about how things work: I initially and admittedly, don't or won't know an answer (s), and through trial and a lot of error, I'll eventually figure out whatever is the problem. (That didn't work out too well for a few watches and clocks my parents owned.) Hence, buying me chemistry sets, a microscope, telescope and a toolkit was their way to channel my otherwise destructive impulses into something creative and less property-damaging!

It requires persistence, and frankly a kind of mental fortitude in that it's OK not to know the answer: it's having the courage to ask the question and pursue what might be initially fruitless paths. The lab notebook is your friend! I am in no way dismissing the fear people feel when they come up to a formidable task (or, at least one they feel is). If this blog does anything, I hope it encourages you to ask questions. Life is not pre-packaged with the contents known. We may never have all the answers, but we should not fear - nor be discouraged by bullies or authoritarian dogma - from asking questions.

I think for many, especially women and minorities, the "norms" of behavior are channeled early into other areas more acceptable to the social order and less threatening to the status quo: questions imply opposition.

As a whole, the American culture of phone apps, Google, downloads, microwave meals and popcorn, drive through restaurants and instant, 24-hour access to information has jaded our sense of adventure; the Romanticism of a really tough problem and the sheer JOY of solving it. Ironically, it was advances in applied physics that allow us to be so jaded. However, for those whom the adventure is everyday in the lab, pouring over notebooks and papers, staring at experiments, computer programs, circuit boards or stars, it's what keeps physicists, scientists and engineers up at night: their love affair with knowledge and discovery. It is how we all advance and survive as a species.

And, things are looking particularly good for physics students right now...

Smiley

American Institute of Physics: US Physics Degrees Reach an All-Time High
American Physical Society: Why Study Physics?

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Tribal STEM...



Salish Kootenai College (SKC) is a four-year college located on the Flathead Indian Reservation in western Montana. It is one of 32 fully-accredited US colleges and universities in which at least 51% of students are enrolled in federally recognized tribes.



The US Department of Education classifies these higher education institutions as TCUs (tribal colleges and universities). Most of the TCUs are chartered and controlled by tribal governments. Three are controlled by the US Bureau of Indian Affairs. The Confederated Salish and Kootenai Tribes govern SKC.



The first TCUs were established in the late 1960s and early 1970s, and initially these institutions focused on vocational education programs. Although vocational training remains an important part of their mission, TCUs also offer a growing number of two- and four-year science, technology, engineering, and mathematics (STEM) degrees.



SKC awarded its first four-year STEM degree, in environmental science, in 1997. Since then, SKC has added baccalaureate programs in computer engineering, forestry, hydrology, information technology, life science, and secondary science education. The programs aim to provide additional career opportunities, and to promote long-term economic development of reservation communities. Today's STEM graduates will be tomorrow's entrepreneurs who provide economic opportunities for tribal members. Economically-strong tribal communities help preserve the cultures, languages, histories, and natural environment of their constituents.




In many ways, SKU's programs mirror the curricula one finds at non-TCUs. But they also incorporate traditional indigenous knowledge of the natural world and pedagogical approaches that reflect tribal cultural norms. They emphasize a teamwork approach, and they focus on strategies to improve quality of life and preserve natural environments. SKC STEM faculty members generally view traditional indigenous worldviews to be complementary to, rather than in conflict with, Western science.

 

 

 

Physics Today POV: Teaching science and engineering at a tribal college

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The Science of Beatboxing...


As a young man, exposed to the first rap song - The Fatback Band: King Tim III - Personality Jock, and the first rap album, The Sugar Hill Gang (all in the same crazy week, mind you) - I could never do it, but it's nice to see someone has actually studied it.

However, as evidenced from the Large Hadron Collider rap... ahem, the physicists would need a few more decades of practice to master it (my humble opinion).

Many of the same mechanisms observed in human speech production were exploited for musical effect, including patterns of articulation that do not occur in the phonologies of the artist's native languages: ejectives, clicks and implosives.

Image credit: 

USC SPAN Group


Rights information: 

The scientists found the beatboxer, a speaker of American English and Panamanian Spanish, was able to generate a wide range of sound effects that do not appear in either of the languages he spoke. Instead, they appeared similar to clicks seen in African languages such as Xhosa from South Africa, Khoekhoe from Botswana, and !Xóõ from Namibia, as well as ejective consonants — bursts of air generated by closing the vocal cords — seen in Nuxálk from British Columbia, Chechen from Chechnya and Hausa from Nigeria and other countries in Africa.

 

"A key finding of our work is to show that we can describe the basic sounds used by the artist with the same system used to describe speech sounds, which suggests that there is a common inventory of sounds that are drawn upon to create any vocal expression," Proctor said.

 

The research also sheds light on the human ability to emulate sounds, and on how the human instincts for music and language can overlap and converge. Also, "learning more about beatboxing and other forms of vocal musical expression may offer insights into novel future speech therapy," Narayanan said.

 

Inside Science: The Science Behind 'BeatBoxing'

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Outsmarting Heisenberg...



Laser interferometers detect tiny distance changes with high precision. Stray light reduces and limits the measurement accuracy of these instruments. Researchers at the Albert Einstein Institute in Hannover have now shown for the first time how to discriminate between measurement signal and stray light using lasers with tailored quantum properties. The novel measurement concept circumvents the Heisenberg uncertainty principle and could enhance the precision of gravitational-wave detectors like GEO600 or the closely cooperating Advanced LIGO (aLIGO) detectors in the USA.

 

The scientists at the Albert Einstein Institute (AEI; Institute for Gravitational Physics at Leibniz Universität Hannover and Max Planck Institute for Gravitational Physics) in Hannover are hunting for elusive gravitational waves—a prediction from Einstein's general theory of relativity. Their first direction detection will open a new window to our Universe and usher in the era of gravitational-wave astronomy. The AEI researchers aim to detect these tiny space-time ripples using detectors like GEO600 near Hannover, Germany, and aLIGO in the U.S. These detectors use lasers to measure the tiny distance changes caused by passing gravitational waves. Thus, the continuous improvement of those lasers and the minimization of disturbances like stray laser light is of great importance.

 

R&D Mag: Outsmarting Heisenberg

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Nosce te ipsum II

For my sons...



West African: 82%

Senegal, Mauritania, Mali, Niger, Nigeria, Cameroon, Ghana, Gabon, Congo, and various other nations along Africa's west coast, from The Gambia to the Equatorial Guinea

Scandinavian: 13%

Denmark, Norway, Sweden, Finland, Greenland, Iceland

Uncertain: 5%

Most likely, Cherokee (credit: mom/grandma)

About Your Region

Your ethnicity indicates that you have ancestry from West Africa, an area that stretches along the continent's Atlantic coast from the desolate sands of the Sahara in Mauritania and Mali to the humid canopies of the central African rain forests in Gabon and Congo. Camel caravans once hauled rock salt from desert mines through the legendary city of Timbuktu. And it's the only place on Earth where you can see a lowland gorilla outside of a zoo.

The people of this region trace their ethnic and cultural roots to numerous different sources. The Tuareg Berbers in the predominantly Muslim north are descended from the desert nomads of the Sahara; the sub-Saharan African populations including the Hausa, Mandinka, and Youruba are descendents of the ancient western kingdoms that dominated the region before the arrival of European colonists; the Baka of Cameroon and Gabon, previously referred to as "pygmies," are some of the oldest residents of the area; and the Bantu language group, which originated in Cameroon, is spoken across the entire southern half of the continent.

European colonialism and exploitation, including a centuries-long slave trade, as well as brutal civil wars, despotism, and uncontrolled governmental corruption in the post-colonial era have kept the region mired in poverty. Since the end of Liberia's second civil war in 2003, the region has seen a stretch of relative peace and a decrease in corruption. Hopefully the future will bring prosperity to this region.

Migrations into this region

Western Africa was first occupied by modern humans about 50,000 years ago. More recently, the colonial period saw immigrants from many European countries establish colonies and trading posts throughout Western Africa. However, the genetic impact of these historical Europeans is thought to be very small.

Migrations from this region

The majority of African-Americans ancestry derives from Western Africa. This is mostly because during the Atlantic slave trade of the 18th and 19th centuries, African slaves from the coastal regions of Western Africa were captured and shipped to the Americas. Even groups further inland were sometimes captured and traded out to the coast for slavery.
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Genie Out of the Bottle...



Given his calm and reasoned academic demeanor, it is easy to miss just how provocative Erik Brynjolfsson’s contention really is. ­Brynjolfsson, a professor at the MIT Sloan School of Management, and his collaborator and coauthor Andrew McAfee have been arguing for the last year and a half that impressive advances in computer technology—from improved industrial robotics to automated translation services—are largely behind the sluggish employment growth of the last 10 to 15 years. Even more ominous for workers, the MIT academics foresee dismal prospects for many types of jobs as these powerful new technologies are increasingly adopted not only in manufacturing, clerical, and retail work but in professions such as law, financial services, education, and medicine.

That robots, automation, and software can replace people might seem obvious to anyone who’s worked in automotive manufacturing or as a travel agent. But Brynjolfsson and McAfee’s claim is more troubling and controversial. They believe that rapid technological change has been destroying jobs faster than it is creating them, contributing to the stagnation of median income and the growth of inequality in the United States. And, they suspect, something similar is happening in other technologically advanced countries.

I talked about this here, here, here and here. Wrote a book about it (literally).

We're given ourselves self-serving mythologies of "shining cities on a hill"; "chosen nation"; pursue multiple choice exams over education, creationism/intelligent design and other made-up "controversies"; junk science in the halls of congress, #scamdals, chimeras and "created realities" because pursuit of poltergeists allow pols not to do their actual elected jobs of managing the commonwealth for the common good (i.e. redistricting = Zombie government).

Our technology is literally superseding our need for certain workers.

For example, when some of us just "couldn't do college" a generation ago, Americans could get a job in a factory - I'll use the automotive industry - and build a decent middle-class life for themselves and a family. A blue collar job might have been to use a drill on an assembly line for lug nuts, bolts, etc. Now, that's done by a robot that doesn't call in sick; doesn't need vacation; won't demand a retirement. Most hiring by US firms is abroad where pay is lower than our national minimum wage. The other good option was the military - recall it was a "peacetime force" post Vietnam.

I am not advocating slowing down, "crawling in a cave"; running for the hills. The genie is out of the bottle now, and we're debating (if you want to call it that) problems that have no impact. Period.

Our sense of the "American Dream" is changing daily, as should our definition of middle class, upper class and financial plasticity - the ability to move freely from class-to-class (hopefully upward). We've got the most expensive health care on the planet, and I've had two good friends - one my fraternity line brother - perish due to lack thereof: insurance is an expensive business with real casualties. Our living longer puts stress on geriatrics, resources and food supplies. Weather, whether you want to call it climate change or a rather heated solar cycle, is now part of what is briefed in the actual Situation Room. We either accept these realities, and prepare our children academically and morally for them: or, inherit the whirlwind of societal instability. This is Sky-net in slow-mo, and "The Hunger Games"; "Brave New World"  nor "1984" should not be a blueprint for our collective futures.

What Orwell feared were those who would ban books. What Huxley feared was that there would be no reason to ban a book, for there would be no one who wanted to read one. Orwell feared those who would deprive us of information. Huxley feared those who would give us so much that we would be reduced to passivity and egotism. Orwell feared that the truth would be concealed from us. Huxley feared the truth would be drowned in a sea of irrelevance. Orwell feared we would become a captive culture. Huxley feared we would become a trivial culture, preoccupied with some equivalent of the feelies, the orgy porgy, and the centrifugal bumblepuppy. As Huxley remarked in Brave New World Revisited, the civil libertarians and rationalists who are ever on the alert to oppose tyranny "failed to take into account man's almost infinite appetite for distractions". In 1984, Huxley added, people are controlled by inflicting pain. In Brave New World, they are controlled by inflicting pleasure. In short, Orwell feared that what we hate will ruin us. Huxley feared that what we love will ruin us.

This book is about the possibility that Huxley, not Orwell, was right.

Neil Postman, "Amusing Ourselves to Death: Public Discourse in the Age of Show Business"

Technology Review: How Technology is Destroying Jobs

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Dropping Science...


Marks the 1,215th post (also, my childhood street address).

 

Don't panic: I know school's out for summer...and that's the chant from the teachers!Smiley

 

This is something I've thought about. In the seventies we had School House Rock (you better believe I have this DVD). A lot of great memories: multiplication, science, grammar, government and how it should work. As a teacher, I recall having to compete with the district demands of test prep, video game systems, mobile devices and the latest script-and-drama from reality TV. Rock was the innovation of its day, a way to engage us in passive learning. I can still sign most of the songs and recall things from its lessons (what I don't remember, I can now review in my living room).

 

This is just another means to engage kids in science, something as a nation we still need to do...

 

As part of a program created by Columbia professor Christopher Emdin, 10 New York City high school classes have been writing raps as a way to learn about science. The program is called Science Genius, and it sounds like the sort of patronizing pop-culture hijack kids hate more than anything. But when Wu-Tang’s GZA drops by a Bronx classroom to discuss the importance of scientific inquiry, you can see the actual moment when the students realize the program is legit.

 

Slate:
Wu-Tang’s GZA Teaches Kids Science With Least-Lame Classroom Rap Ever

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The Smallest Battery...


Saw this on my FB feed from "I f#&$ing love science." This is REALLY fantastic...

A research team from Harvard University and the University of Illinois at Urbana-Champaign has demonstrated the ability to 3D print a battery. This image shows the interlaced stack of electrodes that were printed layer by layer to create the working anode and cathode of a microbattery. (SEM image courtesy of Jennifer A. Lewis.)


Cambridge, Mass. – June 18, 2013 – 3D printing can now be used to print lithium-ion microbatteries the size of a grain of sand. The printed microbatteries could supply electricity to tiny devices in fields from medicine to communications, including many that have lingered on lab benches for lack of a battery small enough to fit the device, yet provide enough stored energy to power them.

 

To make the microbatteries, a team based at Harvard University and the University of Illinois at Urbana-Champaign printed precisely interlaced stacks of tiny battery electrodes, each less than the width of a human hair.

 

“Not only did we demonstrate for the first time that we can 3D-print a battery; we demonstrated it in the most rigorous way,” said Jennifer A. Lewis, senior author of the study, who is also the Hansjörg Wyss Professor of Biologically Inspired Engineering at the Harvard School of Engineering and Applied Sciences (SEAS), and a Core Faculty Member of the Wyss Institute for Biologically Inspired Engineering at Harvard University. Lewis led the project in her prior position at the University of Illinois at Urbana-Champaign, in collaboration with co-author Shen Dillon, an Assistant Professor of Materials Science and Engineering there.

 

The results have been published online in the journal Advanced Materials.

 

Harvard SEAS: Printing tiny batteries, Dan Ferber, Wyss Institute

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Breaking the Gigahertz Barrier...


Researchers in the US and Italy have made the first integrated graphene digital circuits that function at gigahertz frequencies. The circuits are ring oscillators and the work could be an important step towards realizing all-graphene microwave circuits, says the team.



Graphene is a 2D sheet of carbon just one atom thick and it – along with similar 2D materials such as carbon nanotubes and molybdenite – shows great promise for future electronics. This is because electronic devices smaller than 10 nm could be made using these 2D materials – at least in principle. Below the 10 nm length scale, devices based on conventional silicon are expected to be too small to function properly and therefore graphene and similar materials offer a route to making ever-smaller electronic devices.

One major challenge facing those developing such 2D devices is speed. Modern silicon processors operate at microwave (gigahertz) frequencies, as do communications chips in devices such as mobile phones. Therefore, any practical 2D device would have to run just as fast. Until now, however, the fastest 2D device – a carbon-nanotube ring oscillator – operates at a lethargic 50 MHz.

Now, a team led by Roman Sordan of the Politecnico di Milano and Eric Pop of the University of Illinois says it has made the first integrated graphene oscillators – with the added bonus that the devices operate at 1.28 GHz. The graphene ring oscillators also appear to be less sensitive to fluctuations in the supply voltage compared with both conventional silicon CMOS devices and earlier oscillators made from the 2D materials.

 

Physics World: Graphene circuit breaks the gigahertz barrier

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Growing Your Phototransistor...



TECHNOLOGY REVIEW: Chlorophyll is one of the most efficient light-absorbing materials known to science. It also happens to be remarkably stable and abundant beyond imagination.


Researchers studying ways to capture and exploit photons view the amazing capabilities of chlorophyll with green-eyed wonder. Indeed, they would dearly love to copy this extraordinary light-gathering ability.

But there may be a quick way of catching up. Instead of designing and making artificial materials that attempt to copy chlorophyll, researchers have begun to think about using this naturally-occurring material itself and attempting to bend it to their will.

Today, Shao-Yu Chen at the Institute of Atomic and Molecular Sciences in Taiwan and a few buddies reveal how they have incorporated chlorophyll into graphene transistors to make light-activated switches.

The new phototransistor design is relatively simple. It consists of two silver electrodes connected by a sheet of graphene. The graphene is then covered by a layer of chlorophyll using a method known as drop casting. This involves placing a drop of liquid containing chlorophyll on top of the graphene and letting it evaporate. This coats the graphene with a layer of chlorophyll.

 

Physics arXiv:
Biologically inspired graphene-chlorophyll phototransistors with high gain

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Ender's Game...


By far, one of the most enjoyable novels of science fiction I've ever read, Ender's Game predicted things like the world wide web (a "net" in the novel), as well as laptop computers, and like the martial arts movie "Game of Death," it used levels to tell the story. That's not giving much away if you've read the series. Hollywood's apparently rediscovered science fiction, and yes, I'm amped for this one in November!

Amazon.com: Ender's Game Box Set

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Europa Report...


From the Space.com link:

The European Space Agency plans to launch a real-life mission to Europa in 2022 to explore it and several other Jupiter moons as part of the JUpiter ICy moons Explorer (nicknamed JUICE) expedition. NASA will provide a radar instrument for the JUICE spacecraft to peer beneath Europa's surface, but the mission will be completely robotic - no astronauts aboard.

This will be available apparently on I-tunes and video-on-demand June 27. It will hit theaters on August 2.

BTW: "Man of Steel" rocked! If you're just curious, the producers have released a "Kryptonian Glyph Generator" online. I am apparently of the "House of LOR": evolution, adventure, rhythm and dance.

 

Space.Com: First Trailer for Sci-Fi Thriller 'Europa Report' Unveiled
Man of Steel: GlyphCreator.ManofSteel.com


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Father's Day Repost...

Since I reposted for mom...Happy Father's Day Pop. (Chief)



“New Light Beulah was organized in December of 1867 when some 565 African Americans opted to withdraw and worship on alternate Sundays from the white members of Beulah Baptist Church. Both congregations worshipped in the same sanctuary. The eleven-member White Beulah Baptist Church worshipped on the first and third Sundays. The Black congregation of New Light Beulah worshipped on the second and fourth Sundays of each month. Prior to the organization of New Light Beulah, one other Black congregation had been organized out of Beulah Baptist. That congregation was Shiloh Baptist Church when 40 Black members withdrew on May 14, 1866. Shiloh's pastor was Reverend William Weston Adams, a former slave and member of Beulah Baptist who had been ordained November 12, 1865. Reverend Adams along with two other former slaves were ordained by Beulah's Pastor James Lawrence Reynolds shortly after the Civil War. 



“New Light Beulah Baptist Church extended the call to Reverend William Weston Adams to serve as her first pastor in 1867. Reverend Adams accepted the leadership of the church as a supply pastor initially. Within one year, Reverend Adams became the permanent pastor on New Light Beulah Baptist Church, about the same time that Reverend James Lawrence Reynolds resigned as the pastor of the small Beulah Baptist Church. The Beulah Baptist Church elected Reverend Thomas Mellichamp as pastor who had a cordial relationship with Reverend William W. Adams. 

“The two congregations continued to share the same sanctuary for three years until the White congregation dispersed in 1870. The Black congregation continued to flourish. Spiritual leaders of the church included Preston & Eliza Moody Richardson, John & Ann Reese Dinkins, Pharoah & Racheal Ward Smith, Robert & Hagar Green Jones, Lewis & Suckey Smith Tucker, Paul & Matilda Hopkins Sims, Simon & Mariah Tucker Jenkins, Charles & Leah Reese Howell, Ned & Phyllis Brevard Middleton and James & Tansy Smith Taylor. These leaders guided the church through its transitional period. Beulah's Black congregation desiring to assert its independence, changed it's name to New Light Beulah Baptist in 1870. 

“Shortly after the White members ceased using the sanctuary, questions about legal ownership of the church property began. The members of the New Light Beulah claimed ownership, as well as former white members of Beulah Baptist Church. The continuing dispute and the distance traveled by some members resulted in more than half of the membership securing letters of dismission in 1871 to organize the Zion Benevolent Baptist Church, Hopkins, S. C. Complicating the issue of ownership even more was a dispute between Anthony Morris (Black), a member of New Light Beulah and Jesse Reese (White), a former member of Beulah Baptist Church. December 2, 1871, apparently Brother Anthony Morris purchased a cow from Mr. Reese for $34.00 placing $21.00 down with a promise of possession with payment of the balance. Brother Morris later came prepared to pay the balance, but was told by Mr. Reese that the cow was sold and there would be no refund. Consequently, conflict arose between Reese and Morris, along with several members of the New Light Beulah Baptist Church who supported Morris. Subsequently, one of Mr. Reese's cows was maimed resulting in accusations of several New Light Beulah members who were eventually tried in General Sessions Court. Tense relationships developed in the Grovewood-Congaree community between Black and White citizens. 

“Animosity within the community intensified when Mr. Jesse Reese's nephew Jesse Reese Adams moved himself and family into the sanctuary formerly shared by Beulah and New Light Beulah. This was the same sanctuary that was being used by the Black members of New Light Beulah Baptist at that time. The following Sunday when New Light Beulah members arrived for worship, they found Jesse Reese Adams armed and were forced to leave the premises. The land that the sanctuary sat on was originally purchased from the Reese family in 1832. 

“New Light Beulah elected Nazareth's Reverend Isom William Simons as her third pastor. Just prior to Reverend Simons arrival, the church had elected Brother Frank Smith as church clerk to replace Andrew Richbourg. However, Brother Richbourg was reelected church clerk in 1885 for 1 year. Burrell J. Goodson was elected church clerk in 1886. Isom Harrison Goodwin was then elected clerk in 1887. Frank Smith served as clerk again in 1887. New Light Beulah's clerks Smith, Goodson and Goodwin were all at one time students of Benedict Institute. 

“The church purchased two acres of land from the Kaminer brothers on December 26, 1886 for $25.00. Trustees signing the deed were Abram Weston, Jacob Gallman, Pompey Smith, Thomas Stocker, Warwick Howell, Hampton Jamison and Julius Goodwin.

 


Julius Goodwin was my great-grandfather. He and his brothers would take the name of Goodwin after emancipation in 1865, giving it to his wife Epsy and his children, one of which Moses Pickett Goodwin: my grandfather.

Robert Harrison Goodwin was born June 19, 1925, on the same day celebrated in Texas, nationally and internationally as Juneteenth.

Robert lost his father Moses, a sharecropper and school teacher, at the age of three. From all descripts, a voracious reader, and that desire to learn transferred to his son. Raised by his “village” at the time, Robert would quit formal education in the 6th grade to work, bringing home money for his mother, Estelle. He would be drafted in the US Navy in a segregated squadron. He was a ship weapons expert, a cook and a Navy boxer: my first martial arts instructor. He took and passed a college entrance exam, despite his lack of formal education. He opted sadly, not to go, the challenge of the times and the need to make money for his mother, which he dutifully sent home from his meager enlisted check of $92.00.

On his departure after World War II from the Navy, he brought his clothing to a dry cleaning business in Winston-Salem, NC, where a young woman named Mildred would see him. Impressed with his looks and muscles (he was a boxer), she convinced her manager to give the person she’d eventually call “Boot” Goodwin a job. They married April 8, 1950 and Robert became an immediate father to my sister Mamie, who was 8 at the time. I came along 12 years later.

Nanos gigantium humeris insidentes – I stand on the shoulders of giants. I am here because of them. I studied physics because my great-grandfather and his brothers in their own way were fighters, and did not let challenges of violence defeat their dream; my grandfather Moses was an educator and sharecropper who provided mightily for his family; having friendships that endured after his passing and men to raise his son, and my father (Pop) mechanically gifted, brilliant and kind: enduring years of discrimination to bring home money for his family, passed over for promotions and did not let bitterness poison the dreams of his son: me.

He and my mother would help me achieve the rank of Brigade Commander of Winston-Salem/Forsyth County Schools: the highest rank in the city, and the first African American. He was instrumental in my learning the fine art of military drill with a rifle, and how to shoot both rifle and pistol, orienteering and public speaking. He and my mother were Deacon and Deaconess at Galilee Missionary Baptist Church.

In college on my initial troubles with Calculus, Pop purchased a book on the subject; studied it for two weeks and tutored me! Problems solved.

(I attended coincidentally, New Light Church when I lived in Austin, Texas before I knew this history or its significance.)

Happy Father’s Day, gentlemen: I thank you all.

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