Reginald L. Goodwin's Posts (3028)

Sort by

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'

Read more…

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

Read more…

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.
Read more…

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

Read more…

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

Read more…

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

Read more…

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

Read more…

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

Read more…

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

Read more…

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


Read more…

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.

Read more…

Baby Step...


"At the age of 12, I developed an intense interest in mathematics. On exposure to algebra, I was fascinated by simultaneous equations and read ahead of the class to the end of the book." John Pople


3x + y = 2

x + 3y = 0

It's the sort of easy maths problem that you can work out in a few minutes using pencil and paper, but physicists in China, Canada and Singapore have now solved pairs of linear equations like this one using a simple quantum computer. Their experiment involves encoding quantum information into four photons and sending them through a system of optical devices. The physicists claim that their set-up could be improved and modified further to solve other types of problems.

The computational feat has been carried out by Jian-Wei Pan and colleagues at the University of Science and Technology of China, the University of Toronto and the National University of Singapore, who used a quantum algorithm created in 2009 by Aram Harrow, Avinatan Hassidim and Seth Lloyd. For simple systems of linear equations, Harrow and colleagues showed that their algorithm can be exponentially faster than the best solving methods that use a classical computer. One important caveat, however, is that the algorithm does not find an exact solution, but only the most likely answer.


"As long as algebra is taught in schools, there will be prayer in schools." Cokie Roberts
Read more…

Quantum Invisibility Cloak...



TECHNOLOGY REVIEW: The idea is simple in essence. Ordinary invisibility cloaks work by steering light around a region of space to make it look as if it weren’t there. The mathematical approach that describes this is called transformation optics. It starts with Maxwell’s equation which govern the behaviour of light as it passes through space.

 

One way to think of light is as a field in space. In transformation optics, this field can be stretched and squeezed like a rubber sheet when it passes through certain types of material. The goal is to engineer this material so that it stretches the sheet around regions of space and so make them invisible.

 

The approach developed by Jeng Yi and Ray-Kuang is mathematically identical to this. But instead of starting with Maxwell’s equations, they start with the Schrodinger equation which governs the probability of an object being present in a region of space.

 

Their idea is to treat this probability field like a rubber sheet that can be stretched and squeezed. So the goal in designing a quantum invisibility cloak is to stretch this sheet around a region of space so that the probability of existing inside it is zero. In effect, they’re designing a cloak that shields its contents from reality.

 

"Any sufficiently advanced technology is indistinguishable from magic." Arthur C. Clarke

 

Physics arXiv:
Hide The Interior Region of Core-Shell Nanoparticles With Quantum Invisible Cloaks

Read more…

Panspermia...



Panspermia (Greek: πανσπερμία from πᾶς/πᾶν (pas/pan) "all" and σπέρμα (sperma) "seed") is the hypothesis that life exists throughout the Universe, distributed by meteoroids, asteroids and planetoids. (Wikipedia)

So you won't think I just pulled the title out of...well, you know. Almost sounds like an old George Carlin skit...Smiley

Early Earth was not very hospitable when it came to jump starting life. In fact, new research shows that life on Earth may have come from out of this world.

Lawrence Livermore National Laboratory (LLNL) scientist Nir Goldman and Univ. of Ontario Institute of Technology colleague Isaac Tamblyn (a former LLNL postdoctoral researcher) found that icy comets that crashed into Earth millions of years ago could have produced life building organic compounds, including the building blocks of proteins and nucleobases pairs of DNA and RNA.

Comets contain a variety of simple molecules, such as water, ammonia, methanol and carbon dioxide, and an impact event with a planetary surface would provide an abundant supply of energy to drive chemical reactions.

"The flux of organic matter to Earth via comets and asteroids during periods of heavy bombardment may have been as high as 10 trillion kilograms per year, delivering up to several orders of magnitude greater mass of organics than what likely pre-existed on the planet," Goldman says.

Goldman's earlier work is based on computationally intensive models, which, in the past, could only capture 10 to 30 picoseconds of a comet impact event. However new simulations, developed on LLNL's supercomputers Rzcereal and Aztec, Goldman used much more computationally efficient models and was able to capture hundreds of picoseconds of the impacts—much closer to chemical equilibrium.

"As a result, we now observe very different and a wider array of hydrocarbon chemical products that, upon impact, could have created organic material that eventually led to life," Goldman says.

 

R&D: Life on Earth comes from out of this world

Read more…

Esperance...


Note: the NEWSY embed refers to Curiosity, not Opportunity as the article elucidates. Wonder if Space.com caught this discontinuity? (NEWSY is correct)


NASA's Mars rover Opportunity has made perhaps the biggest discovery of its nearly 10-year career, finding evidence that life may have been able to get a foothold on the Red Planet long ago.



The Opportunity rover spotted clay minerals in an ancient rock on the rim of Mars' Endeavour Crater, suggesting that benign, neutral-pH water once flowed through the area, scientists said.



"This is water you could drink," Opportunity principal investigator Steve Squyres of Cornell University told reporters today (June 7), explaining why the rock, dubbed "Esperance," stands out from other water-soaked stones the rover has studied.


Space.com: Rover Finds New Evidence That Ancient Mars Was Habitable

Read more…

Multiverse Discussion...

Get's kind of lively...


Space.com: NEW YORK — Whether you believe our universe is unique or one of many coexisting realities, there's a scientific model that backs up your views. Cosmologists on both sides debated the issue June 1 here at the "Multiverse: One Universe or Many?" panel at the World Science Festival.

"Is the multiverse idea something that's implied by deficiencies in existing cosmological theories, or is it something some scientists need to help them explain certain unresolvable problems in existing theory?" journalist John Hockenberry asked, acting as moderator to scientists Andreas Albrecht, Alan Guth, Andrei Linde, and Neil Turok, who took the stage at New York University's Skirball Center for the Performing Arts.

The possibility of a multiverse is raised by the theory of cosmic inflation. This idea posits that the universe grew exponentially in the first fraction of a second following the Big Bang, expanding even faster than the speed of light. Some versions of this theory suggest that certain areas of the universe expanded faster than others, creating separate bubbles of space-time that might have developed into their own universes.

Science How Stuff Works: How Quantum Suicide Works
Read more…

Sticking to Warmer Physics....

Not mad at you, though...



A massive telescope buried in the Antarctic ice has detected 28 extremely high-energy neutrinos—elementary particles that likely originate outside our solar system. Two of these neutrinos had energies many thousands of times higher than the highest-energy neutrino that any man-made particle accelerator has ever produced, according to a team of IceCube Neutrino Observatory researchers that includes Penn State scientists. These new record-breaking neutrinos had energies greater than 1,000,000,000,000,000 volts or, as the scientists say, 1 peta-electron volt (PeV).

 

 


"Scientists have been searching high and low for these super-energetic neutrinos using detectors buried under mountains, submerged in deep lakes and ocean trenches, lofted into the stratosphere by special balloons, and in the deep clear Antarctic ice at the South Pole," said Penn State Professor of Physics and Astronomy and Astrophysics Doug Cowen, who has worked on IceCube for over a decade. "To have finally seen them after all these years is immensely gratifying." The discovery was announced this week at the IceCube Particle Astrophysics Symposium in Madison, Wisconsin.

 

R&D: Record-breaking high-energy particles detected by telescope buried in Antarctic

Read more…

R-C Manifest Destiny...



Man is the only animal that deals in that atrocity of atrocities, War. He is the only one that gathers his brethren about him and goes forth in cold blood and calm pulse to exterminate his kind. He is the only animal that for sordid wages will march out... and help to slaughter strangers of his own species who have done him no harm and with whom he has no quarrel... And in the intervals between campaigns he washes the blood off his hands and works for 'the universal brotherhood of man' - with his mouth. Mark Twain

*****

Editor’s Note: This story relies upon anonymous sources who could not have spoken on the record without prosecution or other serious repercussions. The author revealed their identities to MIT Technology Review.

 

A little history is helpful. The drone as we know it today was the brainchild of John Stuart Foster Jr., a nuclear physicist, former head of the Lawrence Livermore National Laboratory (then called the Lawrence Radiation Laboratory), and—in 1971, when the idea occurred to him—the director of defense research and engineering, the top scientific post in the Pentagon. Foster was a longtime model-airplane enthusiast, and one day he realized that his hobby could make for a new kind of weapon. His idea: take an unmanned, remote-controlled airplane, strap a camera to its belly, and fly it over enemy targets to snap pictures or shoot film; if possible, load it with a bomb and destroy the targets, too.

 

Two years later, the Defense Advanced Research Projects Agency (DARPA) built two prototypes based on Foster’s concept, dubbed Praeire and Calere. Weighing 75 pounds and powered by a modified lawn-mower engine, each vehicle could stay aloft for two hours while hoisting a 28-pound payload.

 

A meme on FB has a man presumably in the 80s with a cathode ray tube television: the TVs fat, and he is skinny. In the era of flat screens - as the illustration shows - the reverse is now true.

 

The evolution of warfare is becoming mechanized, mechanical: distant. There is no longer the dread to invest "our national treasure," since wars as Machiavelli pronounced are "the extension of politics by other means," usually started by the 'canopy class'; fought by the lower caste in their rainforest's shadow. We're apparently training more joystick pilots than aircraft pilots in the US Air Force, further removing/distancing ourselves from the responsibility of corpse manufacture.

 

The opportunity to elevate oneself from lower to at least middle class - somewhere mid-trunk beneath social canopy, but still shadow - is offered as well as to "see the world" by all major branches of the services. The trick for that opportunity is to survive your deployment, and even your garrison service in the company of fellow members with limbs attached, perhaps some educational/vocational training and without sexual or other assault; harassment or PTSD. All branches are now embroiled in an in a record increase of sexual assault cases - on men as well as women - and the lack of accountability/prosecution by higher ups on perpetrators, the same higher-ups from the "good old boys" club often rendering ham-fist, half-witted pardons to assailants and no help of recovery for victims.

 
Manifest destiny: 1.historical expansionist doctrine: the doctrine or belief prevalent in the 19th century that the United States had the God-given right to expand into and possess the whole of the North American continent.

 
We are children of this sense of destiny/entitlement (if ever truly used in its correct application), and a reflection of this mechanized distancing through technology of mankind from itself.

 

Childhood as I recall it, with imagination creating my own space battles, "rattle snake eggs" with rubber bands, paperclips and an envelop; origami figurines; rubber band guns with clothes pins, stick ball and snow ball fights now kowtow to $25 - 50 video game programs with more than a million players online. Babies and Toys-R-Us makes children a consumer commodity after clearing placenta. Hours are spent by young people to master the next level while education is transformed into meaningless "teach-to-the-test" Pavlov drivel: it makes for an orderly society [of sorts] without critical thinking subjects that will question authority; the enjoyment of creativity for its own sake or expressive insight. Thus, we breed bottom-line capitalists at best; sociopaths at worst.

 

"It's Time to Tackle Interstellar Flight": please understand this apparent leap (shortly, I hope). The space race began after the launch of Sputnik, due to the fear in the US the Russians had developed the means of launching intercontinental ballistic missiles - armed with the threat of mutually assured destruction - which was quite an accurate assessment. Fear is a great motivator. Al Capone said: "you can get much farther with a kind word and a gun than with a kind word alone." The spin off nostalgia science fiction shows - I Dream of Jeanie, Lost in Space, the Jetsons, Star Trek - were the "kind words"; nukes were "the guns."

 

It is an interesting title by Mike Wall (Space.com), and I like how he makes his case, but what would we be taking with us (in US) to space if successful? Will our drones/death stars follow; the arrogance of Manifest Destiny to the stars; will we cast the natives we find to their asteroid belt reservations; see the universe as "free-fire zone"? I recall some advice a noted martial artist friend gave another: "you fight like a bull. That's OK, until you run into a bigger bull." What if the bigger alien bull sees us as hostile, inconsequential...or, as food?

 

And even more soberly: With growing inequality, gynophobia, xenophobia, is the silence not golden from space, but the darker conclusion to the Drake Equation: the aliens did not survive themselves, let alone invaders? What if they concluded their third world war, and are fighting their fourth (if survived) fulfilling Einstein's surmise: "with sticks and stones"?

 

Maybe before warp drive, we need to tackle our materialism and conflict resolution skills.

 

Technology Review: The World as Free-Fire Zone

Read more…

SEP...

Graphene SEP

The world's first single-electron graphene pump has been built by researchers at the UK National Physical Laboratory and the Cavendish Laboratory in Cambridge. The device could be used to redefine the standard unit of current, the ampere, in terms of the electron charge – a fundamental constant of nature.

 

The international system of units (SI) is made up of seven base units, which are the metre, kilogram, second, kelvin, ampere, mole and candela. The ampere, volt and ohm are the three fundamental units of electricity.

 

Ideally, a new definition of the ampere would be based on an extremely accurate source of electric current, capable of delivering one electron at a time. A single-electron pump (SEP) could be ideal in this respect because it produces a flow of individual electrons by shuttling them into a quantum dot and emitting them precisely one at a time. A good SEP also pumps the electrons quickly, so a sufficiently large current is generated.

 

Until recently, two types of SEP were promising contenders: tunable barrier pumps made from semiconductors, which are fast, and so-called hybrid turnstiles made from superconductors, which can be mounted in parallel to make the output current larger. Although the most accurate, a third type of pump usually made from metallic islands is too slow for making a practical current standard, but the UK researchers have now improved its performance by making it from graphene, which is a semi-metal. Graphene is a sheet of carbon just one atom thick that has a honeycomb lattice structure.

 

"Our experiments have shown that graphene is ideal for pumping large currents and its 2D crystal structure is just what is needed to make electrons pass through the SEP quickly," team leader Malcolm Connolly told physicsworld.com. The electron flow can reach near-gigahertz frequencies, very close to what is needed to create a current standard, he added.

 

If it proves accurate enough, the SEP could also help close the "quantum metrological triangle", which relates current, voltage and resistance. Voltage can be measured using the AC Josephson effect, while resistance can be related through the quantum Hall effect. Both these relationships include the same two fundamental constants – Planck’s constant, h, and the charge on the electron, e. A metrological current pump would allow physicists to directly relate current to frequency, and thus test whether e and h are as universal as we think.

 

 

Physics World: Redefining the ampere with the help of graphene?

Read more…