Reginald L. Goodwin's Posts (3116)

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Number 42 (repost)...



Image Credit: Biography.com

...on this day in 1947, Jackie Robinson integrated sports by playing for the Brooklyn Dodgers. Every major league player is wearing number 42 on their Jersey.

Take that, Pop! I remembered (and I am in New York). I passed the Jackie Robinson expressway on my way north...

"Jack Roosevelt Robinson was born in Cairo, Georgia in 1919 to a family of sharecroppers. His mother, Mallie Robinson, single-handedly raised Jackie and her four other children. They were the only black family on their block, and the prejudice they encountered only strengthened their bond. From this humble beginning would grow the first baseball player to break Major League Baseball's color barrier that segregated the sport for more than 50 years.

 

"In 1945, Jackie played one season in the Negro Baseball League, traveling all over the Midwest with the Kansas City Monarchs. But greater challenges and achievements were in store for him. In 1947, Brooklyn Dodgers president Branch Rickey approached Jackie about joining the Brooklyn Dodgers. The Major Leagues had not had an African-American player since 1889, when baseball became segregated. When Jackie first donned a Brooklyn Dodger uniform, he pioneered the integration of professional athletics in America. By breaking the color barrier in baseball, the nation's preeminent sport, he courageously challenged the deeply rooted custom of racial segregation in both the North and the South."


"As the youngest and only son of four children, Edward Alexander Bouchet was born to William and Susan (Cooley) Bouchet in New Haven on September 15, 1852. During the 1850s and 1860s New Haven had only three schools that black children could attend. Edward was enrolled in the Artisan Street Colored School, a small (only thirty seats), ungraded school with one teacher, Sarah Wilson, who played a crucial role in nurturing Bouchet's academic abilities and his desire to learn. He attended the New Haven High School (1866-1868).


"In 1868 Bouchet was accepted into Hopkins Grammar School, a private institution that prepared young men for the classical and scientific departments at Yale College. He graduated first in his class at Hopkins. Edward (along with A. Heaton Robinson) entered Yale College in 1870. Four years later when he he was the first Black to be graduated from Yale in 1874, he ranked sixth in a class of 124. On the basis of this exceptional performance, Bouchet became the first black in the nation to be nominated to Phi Beta Kappa, but he was not elected at that time. [NOTE: George Washington Henderson was elected to Phi Beta Kappa in 1877 at the University of Vermont as the first, Bouchet was not elected until 1884]


"In the fall of 1874 he returned to Yale with the encouragement and financial support of Alfred Cope, a Philadelphia philanthropist. In 1876 Bouchet successfully completed his dissertation on the new subject of geometrical optics, becoming the first black person to earn a Ph.D. from an American university as well as the sixth American of any race to earn a Ph.D. in physics."

I celebrate achievement that breaks down barriers, and serves as examples for other groups to break through theirs. I am indebted by the brave examples of Jackie Robinson, Edward Alexander Bouchet and Robert Harrison Goodwin (Pop).

Link:


My father's US Naval Squadron, October 15, 1943.  He was trained in armaments (Naval guns), and was a cook.  His background was similar to Doris Miller, who fired back at Japanese Kamikaze pilots in the attack on Pearl Harbor (an auditorium is named for Miller in East Austin, TX).  At the time the armed services was segregated; many soldiers and sailors of color were not allowed to fight for their country.  He also boxed for the US Navy.  He was my first martial arts instructor.  He's kneeling on the front row, left end.  He made sure I knew how to find him before he passed.  With a 6th grade education (he stopped to work for his mother), he passed a college entrance exam after the Navy, but opted not to go to college.  He always called me "a thinker," and inspired me to think about physics.  ;-)
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From Impracticle to Plausible...


Loose relation (to the Bloomberg embed) Star Trek Federation:

 

As a SyFy novel, it's not for the faint-of-heart, nor slight of attention span, as in you really need to know your Trek Universe. Without giving up too much of the plot, it does raise some interesting caveats: it points out in its fictional realm authoritarians typically want control over others, and fight any change - Warp Drive or 1st Contact, even the kind that insures the survival of the species. This Zephram Cochrane is more like the one in TOS versus the TNG/Borg Paramount version. It's kind of like reading The Pursuit of Happyness, and then seeing the movie (I did). As in "Pursuit," both remarkably different from each other, but each deeply satisfying in their own right.

 

How does it relate to this post? One way is the well worn cliche "life imitates art," but the other that concerned me as I flew through this enjoyable novel: what forces would try to resist this next "giant leap for mankind?" If I've learned anything, science is political, and our current in-species prejudices could quickly (and disastrously, I'm afraid) become xenophobia.

 

I'd love to live to see this happen. Wars are either fought over limited resources, or in our nature. Initially, a Moon or Mars base, then further out like Titan, a candidate for microbial extraterrestrial life as well as Terraforming; also a base of operations further from the sun's gravity well, like growing crystals on the ISS in Earth orbit could lead to physics experiments essentially macro scale versions of what's proposed above.

 

The world (and the universe) would indeed become a very small place.

 

Thank you Dr. Mae Jemison and Dr. Miguel Alcubierre.

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Dark Matter Decoder Ring...


Stars in the outer regions of spiral galaxy M74 move much more quickly than expected if they were held in orbit only by the visible matter. The best explanation is that they are being pulled by a large halo of unseen, dark matter. (Credit: Gemini Observatory/GMOS Team)

Five-sixths of the universe is missing. That statement feels strange to write, and I’m sure it feels pretty strange to read as well. Given the vastness of the cosmos–and given how little of it humans have explored–how can we know for sure that anything is out of place? The claim sounds positively arrogant, if not delusional.



And yet scientists have assembled a nearly airtight case that the majority of the matter in the universe consists dark matter, a substance which is both intrinsically invisible and fundamentally different in composition than the familiar atoms that make up stars and planets. In the face of staggering difficulties, researchers like Samuel Ting of MIT are even making progress in figuring out what dark matter is, as evidence by teasing headlines from last week. Time to come to terms, then, with the new reality about our place in the universe. Here are seven key things every informed citizen of the cosmos should know.
 
  1. Dark matter is real.
  2. Dark matter can be visible...sometimes.
  3. Dark matter might show up here on Earth.
  4. We might be able to create our own dark matter.
  5. Dark matter is a totally different thing from dark energy.
  6. The dark stuff really dominates.
  7. The dark universe might have a life of its own.


Discovery Out There: Your 7-Step Guide to the Shadow Universe, Cory S. Powell

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Another Reason for Concern...


A little more warming could lead to a little less of this (or, at least a higher price):
East town

That bottle of Bordeaux you put aside may become even rarer in the next few decades as climate change could reduce wine grape production in traditional parts of the world and move it elsewhere, researchers say. Danish Cabernet, anyone?

 

Wine grape production's sensitivity to climate makes it a good test case for what could happen over the next several decades. And the land suitable for viticulture in current major wine producing regions could be reduced by 20% to 70% by 2050, depending on the amount of greenhouse gases produced, the researchers said this week in the Proceedings of the National Academy of Sciences.

 

An increasingly affluent global population is likely to create more demand for wine and ensure that wine grapes will continue to be grown in current areas as much as possible and be grown in new areas as well, the researchers said.

 

LA Times: French wine could get pricey, climate change study says

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If Only...

Levitation via superconductivity - Wikipedia

I fear ignorance and greed have tied us to fossil fuels until like the Lorax...you know the rest.

Superconductors can radically change energy management as we know it, but most are commercially unusable because they only work close to absolute zero. A research group at EPFL has now published an innovative approach that may help us understand and use superconductivity at more realistic temperatures.



Superconductors are materials that allow electrical current to flow with no energy loss, a phenomenon that can lead to a vastly energy-efficient future (imagine computers that never overheat). Although most superconductors work close to absolute zero (0°K or -273.15°C), some can operate at higher temperatures (around -135°C) – but how that happens is something of a mystery. Publishing in a recent PNAS article, Fabrizio Carbone’s Laboratory for Ultrafast Microscopy and Electron Scattering (LUMES) at EPFL has developed a method that can shed light on “high-temperature” superconductivity.

 

EPFL: Another step towards free electricity

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Sadly, Less of This...

NASA Astronaut and Associate Administrator for Education, Leland Melvin, talks to children during STEM event at Ritz-Carlton Hotel, Arlington, Virginia, Jan 13, 2013. CREDIT: NASA/Bill Ingalls  

By now, I hope you've heard that NASA has put into suspended animation many of its educational and non-media public outreach, including their STEM (science, technology, engineering, and math) education programs. This is until it can review all of those programs.



It sounds like an April Fools' Day joke, doesn't it? Believe me, it’s real. If you hadn't heard about all this, it’s probably because the various news media haven’t covered it much. It seems to me that the American people (and the world) ought to know what's happening.



I understand that NASA was forced to make some cuts in order to abide by the sequester. But, I’d never have thought our space agency would even consider pausing or deleting so much of something so important to the future of NASA and of the United States as education and outreach.



I hope that these cuts are temporary, a way to force Congress into repealing the sequester for NASA. If it's not, and these cuts are made permanent, the world will lose something special — that NASA magic. [Petition Asks White House to Reverse NASA Outreach Sequester Cuts]

 

Space.com: Lack of NASA Outreach Is a Setback to US Science

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Survival Strategies...

Black Youth Project - yes, I signed the pledge (see link)

I've received permission from the author of this paper to post it on this blog. I'm  an advocate of STEM fields, particularly in underrepresented groups, especially when graduate schools are seeing a decline in enrollment from foreign students; those same foreign scholars seen as a boost to the economy. So can minority students: United States citizens. I'm not against immigration of STEM talented or labor workers, but our students are here: now.

The strategies elucidated are not just applicable for graduate school, but the struggle for education and therefore true freedom, a brighter future and self-empowerment ("knowledge is power"), which is beyond one particular subject, or group. I found it enlightening; I hope you do as well, and I sincerely hope it helps inspire action and the next leaders in science.


Survival Strategies for African American Astronomers and Astrophysicists

JC Holbrook, PhD, Astrophysics

University of California, Los Angeles

Abstract

The question of how to increase the number of women and minorities in astronomy has been approached from several directions in the United States including examination of admission policies, mentoring, and hiring practices. These point to departmental efforts to improve conditions for some of the students which has the overall benefit of improving conditions for all of the students. However, women and minority astronomers have managed to obtain doctorates even within the non-welcoming environment of certain astronomy and physics departments. I present here six strategies used by African American men and women to persevere if not thrive long enough to earn their doctorate. Embedded in this analysis is the idea of ‘astronomy culture’ and experiencing astronomy culture as a cross-cultural experience including elements of culture shock. These survival strategies are not exclusive to this small subpopulation but have been used by majority students, too.

Physics arXiv:
Survival Strategies for African American Astronomers and Astrophysicists

Kickstarter:
Black Sun: Documentary Film about the 2012 Solar Eclipses

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From One Engineer to Another...

 


OK, I'm a Trekkie, but not a "blind faith" Trekkie. On Star Trek: Of Gods and Men...eh. There's a reason things go "straight to video," or the movie given out free if you go to their site. Wait for the Hollywood scriptwriters/producers/etc. The above embed is an inspiring last video of Neil Armstrong and James Doohan ("Scotty") before they both "beamed up."

 

TV Movie Site: Star Trek Renegades

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The Sagan Effect...



“I find many adults are put off when young children pose scientific questions. Why is the Moon round? the children ask. Why is grass green? What is a dream? How deep can you dig a hole? When is the world’s birthday? Why do we have toes? Too many teachers and parents answer with irritation or ridicule, or quickly move on to something else: ‘What did you expect the Moon to be, square?’ Children soon recognize that somehow this kind of question annoys the grown-ups. A few more experiences like it, and another child has been lost to science. Why adults should pretend to omniscience before 6-year-olds, I can’t for the life of me understand. What’s wrong with admitting that we don’t know something? Is our self-esteem so fragile?”

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Avoid the Klingons...



...and the Daleks, Sith Lords, Romulans, etc.


Researchers at The University of Auckland have proposed a new method for finding Earth-like planets and they anticipate that the number will be in the order of 100 billion using gravitational microlensing, currently used by a Japan-New Zealand collaboration called MOA (Microlensing Observations in Astrophysics) at New Zealand's Mt John Observatory. Their work will appear in the Oxford University Press journal Monthly Notices of the Royal Astronomical Society.



Lead author Dr Phil Yock from the University of Auckland's Department of Physics explains that the work will require a combination of data from microlensing and the NASA Kepler space telescope. *"Kepler finds Earth-sized planets that are quite close to parent stars, and it estimates that there are 17 billion such planets in the Milky Way. These planets are generally hotter than Earth, although some could be of a similar temperature (and therefore habitable) if they're orbiting a cool star called a red dwarf."

"Our proposal is to measure the number of Earth-mass planets orbiting stars at distances typically twice the Sun-Earth distance. Our planets will therefore be cooler than the Earth. By interpolating between the Kepler and MOA results, we should get a good estimate of the number of Earth-like, habitable planets in the Galaxy. We anticipate a number in the order of 100 billion."

 

Daily Galaxy: Earth-Like Planets in Universe Now Estimated at 100 Billion

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Two Cultures...



The Two Cultures is the title of an influential 1959 Rede Lecture by British scientist and novelist C. P. Snow. Its thesis was that "the intellectual life of the whole of western society" was split into the titular two cultures — namely the sciences and the humanities — and that this was a major hindrance to solving the world's problems.

A good many times I have been present at gatherings of people who, by the standards of the traditional culture, are thought highly educated and who have with considerable gusto been expressing their incredulity at the illiteracy of scientists. Once or twice I have been provoked and have asked the company how many of them could describe the Second Law of Thermodynamics. The response was cold: it was also negative. Yet I was asking something which is the scientific equivalent of: Have you read a work of Shakespeare's?

I now believe that if I had asked an even simpler question — such as, What do you mean by mass, or acceleration, which is the scientific equivalent of saying, Can you read? — not more than one in ten of the highly educated would have felt that I was speaking the same language. So the great edifice of modern physics goes up, and the majority of the cleverest people in the western world have about as much insight into it as their neolithic ancestors would have had. (Wikipedia)

I'm afraid little has changed. Our pursuit and fear to avoid the "military-industrial-complex" as warned of by President Eisenhower, has evolved into a cottage industry of conspiracy theorists (that don't have to actually prove their musings; just muse and say them), because myriad of the bewildered herd will purchase their books; attend their seminars; hit their blogs/web sites. We pontificate "Big Bang" and "Evolution" in quotes, and add "theory" as if that disqualifies anything in science (Pythagoras and your geometry teacher would be amused), adding to it machinate controversies from creative, magical thinkers. Must be quite a rush to be an official part of the "dumbing down" of a country.

Sadly, it's not just avoidance of science and/or the conclusions of science: in Snow's day, neither the twain met, and both disdained one another as being without value. His third culture: a merger of science and humanities in the human species, and an appreciation for both (pulled off quite well in Star Trek - take your pick of which version), never materialized.

 

In the chapter titled "The Rich and the Poor," he couldn't be more blunt:

 

"Nevertheless, that isn't the main issue of the scientific revolution. The main issue is that the people in the industrialized countries are getting richer, and those in the non-industrialized countries are at best standing still: so that the gap between the industrialized countries and the rest is widening every day. On the world scale this is the gap between the rich and the poor."

 

University of Colorado: The Two Cultures and the Scientific Revolution

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ATRAP for Antiprotons...

Figure 1: (a) The CPT symmetry can be likened to a mirror that reflects spatial coordinates, flips charge and other additive quantum numbers, and reverses time. To test for cracks in this CPT mirror, physicists check whether the magnetic moment of the proton (left) has the same magnitude as that of the antiproton (right). (Technically, the moments have opposite signs due to the way magnetic moment is defined relative to the spin.) (b) To measure the antiproton’s magnetic moment, the ATRAP Collaboration measures the cyclotron and spin-flip frequencies, fc and fs, respectively. The ratio of these frequencies gives the antiproton’s magnetic moment, μp¯=-fsfcμN, in terms of the nuclear magneton μN.

The ATRAP Collaboration has measured the magnetic moment of the antiproton more precisely than ever before, allowing a new test of CPT symmetry.



Many physical laws are indifferent to distinctions such as left or right and forwards or backwards. On rare occasions, though, a discrepancy shows up, and we say that a symmetry is broken. One symmetry that has so far avoided any signs of breaking is the so-called CPT symmetry, which equates matter and antimatter at a fundamental level. A new test of CPT symmetry involves antiprotons. Specifically, Jack DiSciacca of Harvard University and his colleagues (the ATRAP Collaboration) present the most precise measurement to date of the antiproton magnetic moment [1]. As reported in Physical Review Letters, the results match data on the proton, thus extending CPT ’s shatterproof status for the time being.



Look into a mirror and imagine the world on the other side is not just a reflection, but instead a real physical world. Should nature behave differently in this mirrored world? For decades, most physicists believed the answer was “no.” They assumed that nature was the same in a coordinate system and its mirror image, and they even gave this supposition a name: parity reversal symmetry or P symmetry. However, in 1957, the nuclear physics world was rocked when two back-to-back articles in Physical Review revealed that P symmetry was violated by nature [2, 3]. This discovery revolutionized the understanding of the weak interaction.
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Mini Supernovae...


This artist's concept shows the suspected progenitor of a new kind of supernova called type Iax. Material from a hot, blue helium star on the right is funnelling toward a carbon/oxygen white-dwarf star on the left, which is embedded in an accretion disc. (Courtesy: Christine Pulliam, CfA)

A new type of supernova has been defined by researchers from the US. Designated type Iax, this new class is seen to be less energetic and fainter than previously defined and similar type Ia events – and may even leave behind part of its originating star.



Previously, only two classes of supernovae were recognized – core-collapse events, the explosion of stars 10–100 times as massive as our Sun, and type Ia supernovae, which involve the complete destruction of a white dwarf. Now, a team led by Ryan Foley at the Harvard-Smithsonian Center for Astrophysics has identified 25 members of the new type Iax class based on optical spectroscopic and photometric studies. Its work has shown these stars to be less energetic and with a lower absolute magnitude than would be expected with their type Ia cousin. The team believes that the supernovae of this new class originate from a binary star system comprised of a white dwarf that gathers helium from a companion star, which has lost its outer hydrogen.
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Campbell's Law...

Credit: Heart of the Matter Online

"Campbell's Law: The more any quantitative social indicator is used for social decision-making, the more subject it will be to corruption pressures and the more apt it will be to distort and corrupt the social processes it is intended to monitor."

Atlanta has been a slow-moving train wreck for a while. But it's not just Atlanta. It's the natural and national consequence of trying to run education like a business; the academic equivalent of "thieves [selling] in the temple."

New math

Not that I saw, or participated in a 'standardized testing scandal,' but I recall at my first campus a curve proposed that left me numb...seated at my desk; staring into space in my windowless room. My colleague walked into my room after school:

Him: "You know about the curve."

Me: "Curve? What curve?"

(Goes to my dry erase board): "Take the number of correct answers; divide by the total number of answers, take the square root and multiply by 100...that's the curve." He left.

I walked into the men's rest room. I stared at the toilet, contemplating the efficacy of shoving my finger down my throat. A student interrupted my dark meditations. I went home.

An actual example:



 13/20 x 100 = 81%



Hence, my nausea.

I heard young people exclaiming: "I'm a math beast," and I wanted to shout "no, you're NOT!" I was angry, and ashamed that I felt as though I was in some parallel universe where education didn't mean what it meant four years before my birth: it was literally a matter of national security.

The National Defense Education Act (NDEA), signed into law on September 2, 1958, provided funding to United States education institutions at all levels. It was one of a suite of science initiatives inaugurated by President Eisenhower in 1958, motivated to increase the technological sophistication and power of the US alongside, for instance DARPA and NASA. It followed a growing national sense that U.S. scientists were falling behind scientists in the Soviet Union, catalyzed, arguably, by early Soviet success in the Space Race, notably the launch of the first-ever satellite, Sputnik, the year before.

And, I felt myself - post end of the Cold War, duck-and-cover drills and Mutually Assured Destruction (MAD) - missing the "Ruskies"...
National Education Association
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Positive Possibilities...


The irony is this post appears on the traditional "April Fool's Day." This however, is not a joke.

The following is a quote I read in the book "Fool Me Twice: Fighting the Assault on Science in America," by Shawn Lawrence Otto. After reading the indictment of Galileo for "proposing the sun was the center of the world [and the earth was not]," this hit me like a thunderbolt:

"...Science is a reliable method for creating knowledge, and thus power...science constantly disrupts hierarchical power structures and vested interests in a long drive [my add: by science] to give knowledge, and thus power, to the individual, and that process is also political."

It would appear School House Rock was correct: knowledge is power. Currently in North Carolina, several university institutions are on the chopping block for possible closure, including my Alma mater, North Carolina A&T State University. I no longer believe in accidents of history.

Part of my admiration for Dr. King and everyone of my instructors at A&T that were a part of the movement in one way or another was they all seemed so smart, so well-informed, innately curious about the world around them, and active participants in it through scholarship and the citizenship act of voting for representative government.

These students are articulate, smart, and positive possibilities that you won't see on the "boob tube" flat screen. Forwarded 24/7 are the glorified images of rappers, athletes, entertainers, etc. that of course, doesn't threaten anyone in positions of power: just quaint little minstrel shows; death by a thousand warped cultural knives. I'd rather see more of this kind of "reality show" than the negativity we all seemed to be programmed to accept as our "normal." Of this long list of reality shows, "Myth Busters" is the only one I bothered to watch.

No mention of NSBE, SHPENSBP, NSHP, or what the acronyms mean (see the links). Urban youth in particular are conditioned almost from birth and circumstance to think math and science are "too hard," yet when I taught high school, I'd hear of, or see the same youth spend hours on a joystick mastering "the next level" on a video game. I witnessed the glorification of "flashing sets," "tagging graffiti" and sagging britches to parallel sagging grades: minstrelsy in the hallway. I recall, in all fairness, a staged walkout of Atkins High School because they wouldn't let us wear shorts - that wasn't important either.

We are all part of a "bewildered herd," prodded by the rod and staff of what our socially acceptable stalls are on the "Animal Farm." What we should be teaching is STEM can be as significant as a pillar of fire by night and smoke by day; it can split a sea of reeds and be the modern underground railroad to emancipation. Instead of mastering levels and cypher, we need to master Calculus and Physics!


It makes education...a revolutionary act.

School Page: Virginia State University

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Catharsis...



TECHNOLOGY REVIEW: The Doomsday Argument is the idea that we can estimate the total number of humans that will ever exist, given the number that have lived so far. This in turn tells us how likely it is that human civilisation will survive far into the future.

The numbers are not optimistic. Anthropologists think some 70 billion humans have so far lived on Earth. If we assume that we have no special status in human history, then simple probabilistic arguments suggest that there is a 95 per cent chance that we are among the last 95 per cent of humans that will ever be born. And this means there is a 95 per cent chance that the total number of humans that will ever exist will be less than 20 x 70 billion or 1.4 trillion.

These guys look at the scenario in which many civilisations have evolved throughout the universe, the so-called “universal doomsday” argument. “In that case, we should consider ourselves to be randomly chosen from all individuals in that universe or multiverse,” they say.

Now suppose that the world population stabilises at 10 billion and our life expectancy is 80 years, then the remaining humans will be born in the next 10,000 years. That’s not a long future for humanity. Today, Austin Gerig at the University of Oxford and a couple of pals put forward a new argument with a (slightly) happier ending.

These guys look at the scenario in which many civilisations have evolved throughout the universe, the so-called “universal doomsday” argument. “In that case, we should consider ourselves to be randomly chosen from all individuals in that universe or multiverse,” they say.

In the past, these universal arguments have been no more optimistic than the ordinary ones. They generally state that long-lived civilizations must be rare because if they were not, we would be living in one. What’s more, because long-lived civilizations are rare, the prospects for our civilisation ever becoming long-lived are poor.

This new approach approach allows Gerig and co to take a more fine-grained look at the odds that humanity will survive for much longer in future than it has existed in the past.

The results are complex but their main conclusion gives some reason for hope. “If [the number of existential threats] is not too large, the probability of long-term survival is about a few percent,” they say.


It's comforting to muse that we can actually know the future, and the likelihood of a predicted outcome. We guffaw when the weather anchor "gets it wrong," and somehow think that global warming means if the entire planet isn't becoming the Sahara Desert (and it snows somewhere), there's nothing to it. In the need for accuracy and truth, science revises itself through a rigorous process of peer review, and adherence to The Scientific Method. Modeling and probability always have a margin for error, so in reading the link, think of that.

One of the ways to "increase our odds" is addressing "existential threats" (meteors, nuclear war, pandemics, poverty), and becoming a space faring species. On "a few percent": Growing up under the "duck and cover" drills of the 60s during the Cold War (during which I never thought we had a snowball's chance), I'll TAKE that!

My Pascha post...

Physics arXiv: Universal Doomsday: Analyzing Our Prospects for Survival

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Diagnosing Fusion Plasma...

(Photo Credit: Graphic by Sam Lazerson)
A simulated plasma in the Large Helical Device showing the thin blue saddle coils that researchers used to make diagnostic measurements with the new computer code

Scientists at the U.S. Department of Energy’s Princeton Plasma Physics Laboratory (PPPL) and the National Institute for Fusion Science (NIFS) in Japan have developed a rapid method for meeting a key challenge for fusion science. The challenge has been to simulate the diagnostic measurement of plasmas produced by twisting, or 3D, magnetic fields in fusion facilities. While such fields characterize facilities called stellarators, otherwise symmetric, or 2D, facilities such as tokamaks also can benefit from 3D fields.

Researchers led by PPPL physicist Sam Lazerson have now created a computer code that simulates the required diagnostics, and have validated the code on the Large Helical Device stellarator in Japan. Called “Diagno v2.0,” the new program utilizes information from previous codes that simulate 3D plasmas without the diagnostic measurements. The addition of this new capability could, with further refinement, enable physicists to predict the outcome of 3D plasma experiments with a high degree of accuracy.

The researchers employed a mathematical technique called “virtual casing” to develop the new code for 3D fusion plasmas that are in equilibrium. Such plasmas are held steady by the balance between the inward pressure of the magnetic fields that confine them and the outward pressure exerted by the plasma. Virtual casing enabled the researchers to efficiently calculate magnetic diagnostic signals given a simulated plasma. This was achieved by recognizing that the magnetic field at the edge of the simulated plasma was all that was necessary to calculate the magnetic diagnostic signals.

PPPL:
A fast new method for measuring hard-to-diagnose 3D plasmas in fusion facilities

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Swiss Army Metamaterial...

Assoc Prof Darren Sun holding the patented Titanium dioxide nanofibre in a test tube and the hydrogen reactor in the background. (Credit: Image courtesy of Nanyang Technological University)

Science fiction? Hardly, and there's more -- It can also desalinate water, be used as flexible water filtration membranes, help recover energy from desalination waste brine, be made into flexible solar cells and can also double the lifespan of lithium ion batteries. With its superior bacteria-killing capabilities, it can also be used to develop a new type of antibacterial bandage.



Scientists at Nanyang Technological University (NTU) in Singapore, led by Associate Professor Darren Sun have succeeded in developing a single, revolutionary nanomaterial that can do all the above and at very low cost compared to existing technology.



This breakthrough which has taken Prof Sun five years to develop is dubbed the Multi-use Titanium Dioxide (TiO2). It is formed by turning titanium dioxide crystals into patented nanofibres, which can then be easily fabricated into patented flexible filter membranes which include a combination of carbon, copper, zinc or tin, depending on the specific end product needed.

 

Science Daily:
Multi-Purpose Wonder Can Generate Hydrogen, Produce Clean Water and Even Provide Energy

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Yin and Yang...


Yin and yang are actually complementary, not opposing, forces, interacting to form a whole greater than either separate part; in effect, a dynamic system. Everything has both yin and yang aspects, (for instance shadow cannot exist without light). Either of the two major aspects may manifest more strongly in a particular object, depending on the criterion of the observation. The concept of yin and yang is often symbolized by various forms of the Taijitu symbol, for which it is probably best known in Western cultures. (Wikipedia)

Star Trek Blog: Star Trek’s replicator is an amazing technology concept that has fascinated us for decades. Working at the molecular level to synthesize materials, the replicator is able to instantly produce nearly any object, food or medicine on demand. It is easy to imagine how the replicator would quickly change the world. Such a device could dramatically reduce or even eliminate the cost of most products. Hunger and poverty would be stamped out worldwide, and much of the time and energy spent working for a living could be used instead for pursuits of education, exploration and the advancement of society.

Star Trek envisions the future of humanity to be one of incredible achievements made possible by evolved philosophies as well as technologies. This hopeful view of tomorrow is perhaps the reason so many have dreamed of inventing real-life versions of Star Trek tech -- from the transporter to the tricorder -- and the replicator is one of the most coveted.

A process called “additive manufacturing,” or its more popular nickname, “3D Printing,” has captured the imagination of the tech industry. These machines work much like the two-dimensional printer you may have on your desk, but instead of printing a layer of ink, a 3D printer extrudes many layers of melted plastic to form a physical object. You can imagine this as similar to a hot glue gun, where the heated glue stick is carefully extruded from a nozzle. In the case of a 3D printer, that nozzle is controlled by software and digital design files that tells it how to form a shape.

The comparisons between 3D Printing and the Star Trek replicator don’t end with plastic. Other materials like wood, metal and even some foods are now being extruded in similar ways to make on-demand creations. This has led to excited speculation that soon we may see the beginnings of a new era of manufacturing in America and around the world, where small-scale production is possible at very low costs. We may even “print” biotechnologies and human organs one day.

Gene Roddenberry's underlying message of the future: eternal optimism. As much as I am a fan, I'm afraid I possess a healthy dose of skepticism. Even the Star Trek Memory Alpha Wiki mentions some rough roads prior to 1st Contact with Vulcan. I sincerely hope "life does [not] imitate art" in this case (the "rough road" part; 1st Contact would be OK).

The last five mass extinction events were completely involuntary; unassisted since we hadn't showed up just yet. I end below the embed with two quotes from Einstein:

“I don't know what weapons will be used in world war three, but in world war four people will use sticks and stones.”

"We cannot dispair of humanity, since we ourselves are human beings."

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