Reginald L. Goodwin's Posts (3117)

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On A Roll...

Image Source: Science Alert


Topics: Boeing, Lasers, Nuclear Fusion, Plasma Physics, Star Trek, Star Wars


Earlier this year, Boeing patented a force field. Now, companies pursue patents largely for protection of intellectual property, but these pursuits have been legitimate good press beyond just the occasional TV commercial that blurs by in 30 seconds or so. If it works (the force field), it would only be good at this time for jeeps on the ground in conflicts that involve Improvised Explosive Devices (IEDs). This fusion jet would change the game of propulsion terrestrially as well as for interplanetary travel. Like the previous patent filing, this is just a concept at the moment.

This is another neat idea that brings fusion propulsion a little closer. I don't think we'll be breaking the champagne bottles christening Utopia Planitia shipyards just yet.

Last week, the US Patent and Trademark Office approved an application from Boeing’s Robert Budica, James Herzberg, and Frank Chandler for a laser-and-nuclear driven aeroplane engine.


Boeing’s newly-patented engine provides thrust in a very different and rather novel manner. According to the patent filing, the laser engine may also be used to power rockets, missiles, and even spacecraft.

As of now, the engine lives only in patent documents. The technology is so out-there, that it’s unclear if anyone will ever build it.

Science Alert:
Boeing just patented a jet engine powered by lasers and nuclear explosions
Benjamin Zhang, Business Insider

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Our Loss, The Universe's Gain...

As a research scientist, she inspired a generation, especially young women, to seek careers in science, technology, engineering and math.

This weekend was one of great excitement for the planetary science community as the New Horizons spacecraft moved in on Pluto following decades of hard work. But that optimism took on a somber tone Saturday as news quickly traveled that pioneering scientist Claudia Alexander had died at age 56. Friends and family writing online tributes reported she suffered from breast cancer, but no official cause of death was given.

Alexander was an employee of the Jet Propulsion Laboratory (JPL) and the final project manager for NASA’s Galileo mission. But her public profile rose dramatically last fall due to her duties asproject scientist for NASA’s role in the European Space Agency’s Rosetta mission to Comet 67P/Churyumov-Gerasimenko.

"The passing of Claudia Alexander reminds us of how fragile we are as humans but also as scientists how lucky we are to be part of planetary science,” James Green, director of NASA's Planetary Science Division, said in a statement. “She and I constantly talked about comets. Comet Churyumov-Gerasimenko in particular. She was an absolute delight to be with and always had a huge engaging smile when I saw her. It was easy to see that she loved what she was doing. We lost a fantastic colleague and great friend. I will miss her."

I still can't believe it...

Astronomy: Pioneering Rosetta mission scientist Claudia Alexander dead at 56, Eric Betz

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Tracking, Calculus and Mozart...

Image Source: Amazon.com, 1990 edition


Topics: Calculus, Cosmos, History, Humor, Research, Science, Scientific Method


Note: Post title derived from the paper by the author as it appeared in Skeptic Magazine (link below).

Louis Liebenberg does a really good job in his work "The Art of Tracking: The Origin of Science." The book actually came out three years ago on Amazon, and apparently an earlier version with not much fanfare (and surprisingly, FREE e-book versions at Cyber Tracker, 2nd link below). His premise - and experience learning tracking skills from native foragers - that it was the habits of hunter-gatherers, then and now that caused our brains to reason and develop what we now call science and The Scientific Method. I recall reading in Carl Sagan's Cosmos a similar observation of trackers.

Liebenberg goes a bit deeper into the differentiation between inductive-deductive reasoning and hypothetical-deductive reasoning. The first has to do with direct observations and conclusions from those observations. An example given is "the sun appears to rise in the east, so it must always rise in the east." It is a bit conservative and non-questioning. The hypothetical-deductive poses: "perhaps the Earth is rotating and not the sun moving, and if I were to travel to say, the North Pole, the sun wouldn't appear to move at all." Both are paraphrased quotes from an article I read by the author that appeared on Skeptic Magazine.

It takes nothing away from Ibn al-Haytham and his mighty contribution to The Scientific Method (or Monty Python). It takes nothing from the designers of pyramids in Egypt and the Americas (they just weren't "ancient astronauts" as the fuzzy-haired guy on H2 insists). It's a little expanded from the Ionian settlement (modern day Turkey) originating philosophy that led to debate; logic and the hypothesis of the atom as the smallest division of matter. Also, the author does an excellent job of the interrelation between inductive-deductive and hypothetico-deductive reasoning: one sticks with conventional wisdom and knowledge; the other asks questions and opens itself to debate. It's probably the origins of the combative art of peer review. It may be the reason we feel impelled to explore electronics, music; atoms, quarks and quasars.

All links below are from or relate to the author Louis Liebenberg:

Amazon.com: The Art of Tracking - The Origin of Science
Cyber Tracker: The Origin of Science
Skeptic Magazine:
Tracking Science: The Origin of Scientific Thinking in Our Paleolithic Ancestors

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W. M. Keck Foundation Award...

Mark G. Raizen, Professor of Physics


Topics: Atomic Physics, Optical Physics, Laser Cooling, Nanotechnology, Nobel Prize, Research


In a society of near instantaneous gratification, this represents years of painstaking research and discipline. You can see more of Mark's research here at the research groups' home page. I salute this achievement and am proud to call he and his wife Alicia good friends of the family.

AUSTIN, Texas — The W. M. Keck Foundation has awarded scientists at The University of Texas at Austin two grants totaling $1.5 million to develop a powerful, alternative method for cooling atoms and involve more undergraduate students in using new advanced technologies for research.

Known for supporting high-impact research with the potential to reshape scientific understanding, the Keck Foundation’s contributions to The University of Texas at Austin total more than $7 million with the two new grants announced this month.

A grant of $1 million from the Keck Foundation’s Science and Engineering Research Grant Program will support the “Ultra-Bright Atom Laser” project led by Mark Raizen, a professor in the Department of Physics. The project proposes a new method for cooling atoms in a gas phase toward absolute zero.

Until now, laser cooling has been the standard method for cooling atoms and was recognized by a Nobel Prize in Physics in 1997. Raizen's method could be far more effective than the existing laser-cooling practice and result in an ultra-bright atom laser, predicted to surpass the current state-of-the-art by a factor of 100 million. Applications of the powerful new atom laser include innovations in nanoscience, tests of fundamental physics and new, noninvasive detection of gravitational anomalies, such as underground tunnels or oil and gas reservoirs.

UT News:
Keck Foundation Awards $1.5 Million for New Method to Cool Atoms and Student Research

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Pentaquark...

CERN: An illustration of the possible layout of quarks in a pentaquark (Time)


Topics: Large Hadron Collider, LHC, Particle Physics, Quarks, Quantum Mechanics, Theoretical Physics


Actually, the idea of a pentaquark - penta = 5; quark, the building blocks of matter consists of 4 quarks and 1 antiquark bound together has been around for a while, at least quarks theoretically since the 1960s. The LHC - the celebrated particle accelerator of Higgs Boson fame, found strong evidence , but the Jefferson Lab in Newport News, Virginia saw experimental evidence in 2003, and hints at the LHC recently. I'm going to go with Time (also source of the illustration) and the BBC write ups, excerpted because of their gasping fan "cuteness." However, I do appreciate the attempt at increasing the physics literacy of the general public that's of late is hostile to all things science. Note on the link to "LHCb collaboration": there are a LOT of collaborators, but if you want, they're #2 on the page search results at the link.

Time: The discovery may provide hints as to what happens when giant stars collapse

Physicists at the Large Hadron Collider at the CERN in Switzerland announced the discovery of a new particle, the pentaquark.

The Collider, which smashes atoms together, showed signs of the pentaquark in 2011 and 2012, but scientists wanted to make absolutely sure of its existence before announcing its discovery. Tanya Basu

BBC: Scientists at the Large Hadron Collider have announced the discovery of a new particle called the pentaquark.

It was first predicted to exist in the 1960s but, much like the Higgs boson particle before it, the pentaquark eluded science for decades until its detection at the LHC.

The discovery, which amounts to a new form of matter, was made by the Hadron Collider's LHCb experiment.

The findings have been submitted to the journal Physical Review Letters. Paul Rincon

Physics arXiv:
Observation of J/ψp resonances consistent with pentaquark states in Λ0b→J/ψK−p decays
LHCb collaboration

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And Pluto...

Latest photos of Pluto's puzzling spots.
Source: John Hopkins Applied Physics Laboratory


Topics: Astronomy, Astrophysics, Planetary Science, Space Exploration


..."and Pluto," the end of the memorized verse we recited to my teacher Mrs. Flynt showing our mastery of the [then] nine planets for a good grade. Pluto - apart from my elementary school science classes - has entered our imaginations again. By the time this auto posts, several images will have been broadcast around the globe. An ounce of the ashes of astronomer Clyde Tombaugh - the discoverer of Pluto - is on board poetically for this journey. I'll likely update this post with some video embed when available.

When New Horizons rocketed away from Cape Canaveral on Jan. 19, 2006, Pluto was the ninth planet in our solar system. It was demoted to dwarf planet a scant seven months later.

Tombaugh's widow and two children offered up an ounce of his ashes for the journey to Pluto. The ashes of the farm boy-turned-astronomer are in a 2-inch aluminum capsule inscribed with these words:

"Interned herein are remains of American Clyde W. Tombaugh, discoverer of Pluto and the solar system's 'third zone.' Adelle and Muron's boy, Patricia's husband, Annette and Alden's father, astronomer, teacher, punster, and friend: Clyde Tombaugh (1906-1997)" *

A truth from fiction, Clyde Tombaugh has gone "where no one has gone before." \\//_

The promised embed:

NASA: Pluto and Charon: New Horizons' Dynamic Duo
New Horizons: NASA's Mission to Pluto
* USA Today:
Astronomer's ashes nearing icy world he discovered: Pluto, Marcia Dunn, Associated Press

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Blind Spotting...

Source: Technology Review


Topics: Acoustics, Humor, Materials Science, Radio Frequency Microelectronics, Sonar


I had the brief temptation to call the post "Bat Sonar," but for the youth that missed the exposure to the campy antics of Adam West/Burt Ward Batman and Robin, the metaphor would have been over their heads due to lack of exposure and severely dated me (not that I haven't numerous times already).

TECHNOLOGY REVIEW: Acoustic "Radar" Spots Stowaways Inside Metal Cargo Containers

Seeing people on the other side of metal walls has never been possible despite the array of high-tech sensors that can peer through other materials. That looks set to change.

The detection of stowaways in lorries, shipping containers, and train carriages is an increasingly important activity as countries all over the world attempt to tackle the illegal movement of people across borders. Various technologies are designed to help but all have significant limitations.

Passive millimeter wave sensors can see through walls but require a source of illumination such as the sky. That generally rules out the detection of stowaways hidden away from sunlight.

Microwave radar systems provide their own source of illumination but generally struggle to detect motionless people. In any case, these signals do not pass through metal walls and so are unsuitable for cargo containers and the such-like.

Then there are systems based on the detection gamma rays. These pass easily through metal walls and are designed primarily for the detection of nuclear materials. But they pose a significant health hazard for humans and so are not suitable for spotting stowaways.

Finally, there are acoustic sensors, which can certainly send signals through metal walls but have never been powerful or sensitive enough to detect humans accurately on the other side.

Until now. Today, all that changes thanks to the work of Franklin Felber at Starmark, a scientific consulting company based in San Diego, who has built and tested an acoustic sensor that is both powerful and sensitive enough to detect the breathing motion of an otherwise stationary human on the other side of a cargo container wall.

Physics arXiv: Demonstration of novel high-power acoustic through-the-wall sensor,
Franklin Felber

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Kinetic Theory and the Blitz...

Credit: Thomas Fuchs


Topics: History, Humor, Kinetic Theory of Gases, Mathematical Models, Stochastic Modeling


This happens at 10:00 am EST. There are two things I thought I'd never see growing up in the south: 1) an African American president; 2) retiring the old Virginia battle flag Mr. Roof admired as the Confederate Flag. My first encounter with it was April 5, 1968: this was the day after the assassination of Martin Luther King. I was five and at Bethlehem Community Center, my kindergarten. I remember the tears when we were told Dr. King had died; I remember the flag and the jeers from the streets outside, the honking and gunshots celebratory of his death. Like I said: two things from personal experience I thought I'd never see. It took no less than the magnum opus, thunderous crescendo of the descendant of Jefferson Davis - Jenny Horne to drive the point home.
Okay, this was a bit of a stretch but it APPEARS in Scientific American. I mean a stretch applying theory meant for essentially micro environments to macro environments. They apply the fact that armies and gases have densities and a little imagination. There have been other models of war using either known mathematics or natural phenomena. I was also mildly entertained by the credits for the author of the article and the photo credit. I'll let you discover without mention. I hope I'm not in trouble with too many high school physics teachers, and it makes your Friday.Smiley Faces

I just found this smiley face funny:

Smiley Faces

In 1939 Nazi Germany debuted the “lightning war,” or blitzkrieg, in Poland. This deadly military offensive involved mounting a burst of firepower-heavy attacks to cause confusion and break through an enemy's lines unexpectedly. Nearly 80 years later Russian physicists have found they can model this surprise tactic with a scientific law: the kinetic theory of gases.

The parallels are obvious enough, with some creative thought. Both armies and gases have densities—troops per square kilometer or atoms per cubic meter. Basic units also have measurable cross sections that define territorial coverage—for troops, average weapon range, and for atoms of gas, electron orbital reach. And for both entities, when cross sections overlap, confrontations occur. Further, in the case of a blitzkrieg, defenders' dispersion can be seen as resembling the widely separated atoms of a gas.

Scientific American:
The Kinetic Theory of Gases Accurately Predicts Nazi Blitzkrieg Attacks, Tim Palucka

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Immersion Lithography...

Figure 1. (a) A sketched diagram of 193i exposure head. Water fills the gap between the final lens and the wafer. The water injection and confinement system is not included in the diagram. (b) Optical paths of two-beam interference for both "dry" and 193i exposures.


Topics: Economy, Education, Photolithography, Nanotechnology, Semiconductor Technology, STEM


This is a good article in Solid State Technology and I leave a follow-on link to SPIE (the International Society for Optics and Photonics). Regular photolithography is focusing ultraviolet light through a chrome mask (through a medium of air), which contains the pattern for the integrated circuits that make up a lot of our electronics, the Internet and in the case of our economy and travel yesterday: Wall Street and United Airlines. Immersion Lithography usually involves water as the illustration from the SPIE figure above shows.

I believe a great deal in the educational infrastructure that must exist for not just (as I've often referred to) future replacement workers, but from the perspective of viable jobs for young people to matriculate into, the "mystery" of high tech needs to be removed. It's more like hard work, the same effort in say, mastering a sports skill, a similar discipline can be mustered for STEM fields. It keeps crime down and hopes up. As a nation, we need to stop obfuscating about contrived controversies in science; fighting the Civil War (what about war is "civil" anyway?); the racism, sexism, homophobia and get everyone in the boat to ROW - hard. Patching ignored holes only delays our sinking... or salvation.

While the lithography equipment market sometimes seems like A Tale of Two Cities, it’s more complicated than that. The basic fact is that the semiconductor industry is soldiering on with 193-nanometer immersion lithography technology and multiple-patterning exposures while extreme-ultraviolet lithography continues its long-aborning development.

ASML Holding is the leading vendor in the EUV lithography field, and it’s also a big supplier of 193nm immersion lithography systems. The industry consensus now seems to be that the near future will see the combined use of EUV and immersion, possibly at the 10-nanometer process node and definitely at the 7nm node. Beyond that, it’s anyone’s guess.

ASML had big news to reveal at the SPIE Advanced Lithography Symposium in February. Taiwan Semiconductor Manufacturing had successfully exposed 1,022 wafers within 24 hours on ASML’s NXE:3300B EUV system, with sustained power of more than 90 watts from the scanner’s power source.

In April, ASML reported that “one of its major U.S. customers” had agreed to order at least 15 EUV systems. Industry speculation on the unidentified customer quickly centered on Intel. The Dutch company has been relatively quiet since then.

Solid State Electronics:
Immersion lithography remains the industry’s workhorse technology, Jeff Dorsch
SPIE: 193nm immersion lithography: Status and challenges, Yayi Wei and David Back

Read more…

Quantum Dot Spectrometer...

This artist's impression shows five different types of colloidal quantum dots being deposited onto the detector array of a digital camera. (Courtesy: Mary O'Reilly)


Topics: Applied Physics, Modern Physics, Nanotechnology, Quantum Mechanics, Spectrograph


The first-ever spectrometer made from quantum dots has been unveiled by Jie Bao of Tsinghua University in China and Moungi Bawendi of the Massachusetts Institute of Technology in the US. According to its inventors, the instrument could be produced commercially to be as small, inexpensive and simple as a mobile-phone camera. Such compact spectrometers could find a wide range of applications, from gathering scientific data on space missions to sensors integrated within household appliances.

Spectrometry measures the intensity of light as a function of wavelength and is used to study various properties of light-emitting and light-absorbing substances. This makes it an invaluable analytical technique that is used in a broad range of scientific and technological disciplines. Most spectroscopic techniques involve dispersing light in terms of its wavelength. A prism, for example, can be used to bend light into its constituent wavelengths (colours) and a spectrum can then be acquired using a position-sensitive light detector. Bao and Bawendi have taken a different approach, using quantum dots to create an array of band-pass filters for the light to pass through before it reaches a position-sensitive detector.

Quantum dots are tiny pieces of semiconductor just a few nanometres across. They are sometimes described as artificial atoms because, like atoms, they absorb and emit light at specific wavelengths. Unlike atoms, however, the wavelengths can be tuned by simply adjusting the size of the quantum dot.

Bao hit upon the idea of using quantum-dot materials in spectrometers while investigating their use in solar cells and light detectors. "I realized this material has a very unique property that no other material can match," he says, referring to the simple means of tuning the optical response. With this in mind, he began investigating using large numbers of quantum dots in a new type of spectrometer. By monitoring the light that the dots absorbed, it would be possible to determine relative intensities at various wavelengths in the spectrum of the incident light.

Physics World:
Spectrometer made from quantum dots is compact and low cost, Anna Demming, Nanotechweb.org

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Physics of Gas Mileage...

Credit: John Moreno/Argonne National Laboratory


Topics: Applied Physics, Mechanical Engineering, Physics and Pop Culture, Semiconductor Technology, Thermodynamics


If you bought a car in the late 2000's - post 2010 - you likely have a feature in your vehicle that calculates your gas mileage and range you have on the amount of fuel. This can be a little confusing for sure, but surprisingly (or if you follow this blog, not so much) a lot of physics goes into the LED display on your dashboard. This article from Phys.org gives a good overview of the five properties that goes into that calculation your integrated circuits do for you. After all, it's summer in the northern hemisphere, and wherever you are on that part of the globe, we're all driving SOMEWHERE.

Physics is inescapable. It's everywhere, making your Frisbees fly, your toilets flush and your pasta water boil at a lower temperature at altitude. We've harnessed these forces, along with chemistry and engineering, to build a marvelous contraption called a car—but many of the same properties that allow you to fly along the freeway also affect how much gas mileage you get out of your car. We talked to Argonne transportation engineer Steve Ciatti to explore some of the forces at work in your engine when it's on the road.

1. Vapor pressure
2. Friction
3. Drag coefficient
4. Momentum
5. Rolling resistance

Bonus: Air temperature

Phys.org: Five properties of physics that affect your gas mileage, Louise Lerner

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X-ray Free Electron Laser...

Image Source: Spring 8


Topics: Optical Physics, Laser, Modern Physics, Quantum Mechanics, X-rays


New experimental tools and techniques open windows that allow scientists to peek into unexplored scientific realms and to test theoretical predictions. X-ray imaging is unique, both because of the penetrating power of x rays in solid matter—as Wilhelm Röntgen discovered in 1895—and because x-ray wavelengths are short enough to resolve the interatomic spacing in matter via diffraction—Max von Laue’s discovery in 1912. Those properties allow scientists to push forward fundamental physical sciences and to find major applications in structural imaging, from new commercial drugs to jet turbine blades.

The early success of the Linac Coherent Light Source (LCLS) has bolstered plans for more accelerator-based x-ray free-electron lasers (XFELs) in Europe and Asia. But the new machines create a challenge: The ultrabright femtosecond pulses generated by XFELs have properties far beyond previous sources. They carry a million times more pulse energy than synchrotron x rays, are 10 000 times shorter, and have coherence that can produce focused x-ray beams with intensities up to 1020 W/cm2, more than a billion times greater than any previously achieved. The XFELs demand new research methods that can take advantage of those characteristics.

Physics Today:
Brighter and faster: The promise and challenge of the x-ray free-electron laser
Philip H. Bucksbaum and Nora Berrah

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The Meaning...

Image Source: Wikiquote
"Once you have learned to read you will forever be free."
"Knowledge makes a man unfit to be a slave."
More at Brainyquote.com


Topics: #BlackLivesMatter, Civil Rights, Frederick Douglass, History, Human Rights


Frederick Douglass was known well for being an escaped slave, committed republican (at that time in our history, the progressive party) and abolitionist. He was a staunch advocate of equality and education, seeing his own personal emancipation centered on something slaves were banned from doing: reading. His former master chastised his wife, saying teaching Frederick how to read would "ruin him" and make him unfit for the peculiar institution. He couldn't have agreed more.

In his uniquely bellicose manner, Mr. Douglass tackles this in a long soliloquy given July 5, 1852 in Rochester, NY. I have thought of Charleston, South Carolina and how the narrative of our nation had been determined by a defeated foe to the point of redefining the narrative and main rationale (if you can call it that) behind the Civil War: the continued indentured servitude of a kidnapped people in perpetuity. In light of the debate sparked by the assassination of nine innocents in Mother Emanuel AME, and the symbol the terrorist so revered; the possibility on that symbol's removal in the bloody aftermath, I give you Frederick Douglass' apropos speech on its 163rd anniversary in scroll excerpt (not visible in some platforms) and read by the accomplished actor and voice of Darth Vader, James Earl Jones.

He who could address this audience without a quailing sensation, has stronger nerves than I have. I do not remember ever to have appeared as a speaker before any assembly more shrinkingly, nor with greater distrust of my ability, than I do this day. A feeling has crept over me quite unfavorable to the exercise of my limited powers of speech. The task before me is one which requires much previous thought and study for its proper performance. I know that apologies of this sort are generally considered flat and unmeaning. I trust, however, that mine will not be so considered. Should I seem at ease, my appearance would much misrepresent me. The little experience I have had in addressing public meetings, in country school houses, avails me nothing on the present occasion.

The papers and placards say that I am to deliver a Fourth of July Oration. This certainly sounds large, and out of the common way, for me. It is true that I have often had the privilege to speak in this beautiful Hall, and to address many who now honor me with their presence. But neither their familiar faces, nor the perfect gage I think I have of Corinthian Hall seems to free me from embarrassment.

The fact is, ladies and gentlemen, the distance between this platform and the slave plantation, from which I escaped, is considerable-and the difficulties to he overcome in getting from the latter to the former are by no means slight. That I am here to-day is, to me, a matter of astonishment as well as of gratitude. You will not, therefore, be surprised, if in what I have to say I evince no elaborate preparation, nor grace my speech with any high sounding exordium. With little experience and with less learning, I have been able to throw my thoughts hastily and imperfectly together; and trusting to your patient and generous indulgence I will proceed to lay them before you.

This, for the purpose of this celebration, is the Fourth of July. It is the birth day of your National Independence, and of your political freedom. This, to you, as what the Passover was to the emancipated people of God. It carries your minds back to the day, and to the act of your great deliverance; and to the signs, and to the wonders, associated with that act, and that day. This celebration also marks the beginning of another year of your national life; and reminds you that the Republic of America is now 76 years old. l am glad, fellow-citizens, that your nation is so young. Seventy-six years, though a good old age for a man, is but a mere speck in the life of a nation. Three score years and ten is the allotted time for individual men; but nations number their years by thousands. According to this fact, you are, even now, only in the beginning of your national career, still lingering in the period of childhood. I repeat, I am glad this is so. There is hope in the thought, and hope is much needed, under the dark clouds which lower above the horizon. The eye of the reformer is met with angry flashes, portending disastrous times; but his heart may well beat lighter at the thought that America is young, and that she is still in the impressible stage of her existence. May he not hope that high lessons of wisdom, of justice and of truth, will yet give direction to her destiny? Were the nation older, the patriot's heart might be sadder, and the reformer's brow heavier. Its future might be shrouded in gloom, and the hope of its prophets go out in sorrow. There is consolation in the thought that America is young.-Great streams are not easily turned from channels, worn deep in the course of ages. They may sometimes rise in quiet and stately majesty, and inundate the land, refreshing and fertilizing the earth with their mysterious properties. They may also rise in wrath and fury, and bear away, on their angry waves, the accumulated wealth of years of toil and hardship. They, however, gradually flow back to the same old channel, and flow on as serenely as ever. But, while the river may not be turned aside, it may dry up, and leave nothing behind but the withered branch, and the unsightly rock, to howl in the abyss-sweeping wind, the sad tale of departed glory. As with rivers so with nations.


History is a Weapon: The Meaning of July Fourth for the Negro, Frederick Douglass
Related link: What the Civil War Can Teach us About Patriotism, Jarret Ruminski, PhD Historian, "That Devil History" blog

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Pluto's Doorstep...

New color images from NASA’s New Horizons spacecraft show two very different faces of the mysterious dwarf planet, one with a series of intriguing spots along the equator that are evenly spaced.
NASA/JHUAPL/SwRI


Topics: Astronomy, Astrophysics, Planetary Science, Pluto, Space Exploration


Some articles still remove Pluto from the planet family; others refer to it as a "planetoid" (small). We're 11 days from the closest flyby of the dwarf in our neighborhood right before the Oort Cloud and interstellar space. July 14th should be an exciting day in science.

New color images from NASA’s New Horizons spacecraft show two very different faces of the mysterious dwarf planet, one with a series of intriguing spots along the equator that are evenly spaced. Each of the spots is about 300 miles (480 kilometers) in diameter, with a surface area that’s roughly the size of the state of Missouri.

Scientists have yet to see anything quite like the dark spots; their presence has piqued the interest of the New Horizons science team due to the remarkable consistency in their spacing and size. While the origin of the spots is a mystery for now, the answer may be revealed as the spacecraft continues its approach to the mysterious dwarf planet. “It’s a real puzzle — we don’t know what the spots are, and we can’t wait to find out,” said New Horizons Principal Investigator Alan Stern of the Southwest Research Institute, Boulder. “Also puzzling is the longstanding and dramatic difference in the colors and appearance of Pluto compared to its darker and grayer moon Charon.” [1]

On July 14, New Horizons will zoom within just 7,800 miles (12,500 kilometers) of Pluto, snapping history's first up-close photos of the dwarf planet's mysterious surface.

On July 1, NASA released images showing Pluto and its largest moon, Charon, in true color. The photos reveal a series of evenly spaced dark splotches, each of them about 300 miles (480 kilometers) wide, near Pluto's equator on one side of the dwarf planet.

New Horizons scientists don't know what to make of the features yet. [2]

1. Astronomy: Spots on Pluto fascinate as New Horizons gets the all clear, NASA, Johns Hopkins University Applied Physics Lab, Laurel, Maryland
2. Space.com: On Pluto's Doorstep: Latest Photos by Approaching New Horizons Probe, Space.com staff

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Quantum Myths vs Facts...

Source: Claes Johnson on Mathematics and Science


Topics: Humor, Modern Physics, Physics and Pop Culture, Quantum Mechanics


Okay, the creative license of writers to invent their own "rules" in fiction gave us warp drive, automatic doors and cell phones. Two out of three's not bad.

There are times I cringe (as do a lot of physics, engineering and science types) when the writer has gone completely "off-the-range" on certain things that makes their plot work, just not the physics. The other thing that's like scratching a chalk board (an old-school metaphor in this age of dry erase boards and Power Point), is when pop psychology appropriates the language of quantum physics and totally misuses it to give credence to phenomena even THEY can't explain. Entanglement like "tesseract" gets used as a space filler - a gee whiz who-zits - when they don't have anything to say or a background to describe it. It's more likely statistical probability, blind luck or gas; Rolaids being a far better prescription.

Epoch Times is something I generally don't follow, but in this article, they do get some things right. I also list a Physics arXiv article below that goes even deeper into the subject.

Quantum physics is so fascinating that it appeals to a broader lay audience than a lot of other topics in science. It’s also so difficult to grasp and attempts to simplify it for a lay audience may open it to misunderstanding.

It is invoked to explain all sorts of strange, even paranormal, phenomena. Yet these explanations are often based on misconceptions about quantum physics. Quantum physics may indeed have the potential to explain such phenomena, since much remains to be discovered about it. But it is important to remain clear on what it does and does not actually claim at this point in its development.

1. No Indication That Entanglement Transfers Information (think "telepathy").
2. Consciousness Is Not Necessarily the Key to Collapsing the Wave-Function (Schrödinger’s cat, The Uncertainty Principle, the observer).
3. It Doesn't Only Describe the Subatomic Level (color, elasticity, black holes).
4. Speaking of a ‘Wave-Particle Duality’ Is Not Exactly Correct (see paper below).

Epoch Times: 4 Common Misconceptions About Quantum Physics, Tara MacIsaac
Physics arXiv: Quantum mechanics: Myths and facts, Hrvoje Nikolic
Theoretical Physics Division, Rudjer Boˇskovic Institute, Zagreb, Croatia

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Doubled Battery Life...



SiC-free graphene growth on Si NPs. (a) A low-magnification TEM image of Gr–Si NP. (b) A higher-magnification TEM image for the same Gr–Si NP from the white box in a. (Insets) The line profiles from the two red boxes indicate that the interlayer spacing between graphene layers is ~3.4 Å, in good agreement with that of typical graphene layers based on van der Waals interaction. (c) A high-magnification TEM image visualizing the origins (red arrows) from which individual graphene layers grow. (d) A schematic illustration showing the sliding process of the graphene coating layers that can buffer the volume expansion of Si. Credit: Nature Communications 6, Article number: 7393 doi:10.1038/ncomms8393

Topics: Batteries, Green Tech, Semiconductors, Materials Science, STEM


Currently, my laptop battery lasts about two hours straight out of the box. Over time and wear, that diminishes to having to use the power cord until a new one comes in; my Kindle and mobile phone has about six and eight hours charge respectively. I listed green tech. Longer battery life should translate to less finding their way to landfills.

(Phys.org)—A team of researches affiliated with Samsung's Advanced Institute of Technology, along with colleagues from other institutions in Korea has found a way to greatly extend lithium-ion battery life. In their paper published in the journal Nature Communications, the team describes their new technique and the results they achieved using it.

Consumers want their phone batteries to last longer—that is no secret, and battery life has been extended, but mostly due to improved efficiency of the electronics that depend on it. Researchers at phone companies and elsewhere have been working hard to find a way to get more power out of the same size battery but have to date, not made much progress. In this new effort, the researchers looked to silicon and graphene for a better battery.

Phys.org: Samsung develops lithium-ion battery with nearly double the life, Bob Yirka

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Killing Schrödinger's Cat...



Topics: Einstein, Gravity, General Relativity, Modern Physics, Quantum Mechanics, Schrödinger's Cat


If the cat in Erwin Schrödinger's famous thought-experiment behaved according to quantum theory, it would be able to exist in multiple states at once: both dead and alive. Physicists' common explanation for why we don’t see such quantum superpositions—in cats or any other aspect of the everyday world—is interference from the environment. As soon as a quantum object interacts with a stray particle or a passing field, it picks just one state, collapsing into our classical, everyday view.

But even if physicists could completely isolate a large object in a quantum superposition, according to researchers at the University of Vienna, it would still collapse into one state—on Earth's surface, at least. “Somewhere in interstellar space it could be that the cat has a chance to preserve quantum coherence, but on Earth, or near any planet, there's little hope of that,” says Igor Pikovski. The reason, he asserts, is gravity.

Cinema-goers who saw the film Interstellar are already familiar with the basic principle behind the Vienna team’s work. Einstein’s theory of general relativity states that an extremely massive object causes clocks near it to run more slowly because its strong gravitational field stretches the fabric of space-time (which is why a character in the film aged only an hour near a black hole, while seven years passed on Earth). On a subtler scale, a molecule placed nearer the Earth’s surface experiences a slightly slower clock than one placed slightly further away.

Because of gravity’s effect on space-time, Pikovski’s team realised that variance in a molecule’s position will also influence its internal energy—the vibrations of particles within the molecule, which evolve over time. If a molecule were put in a quantum superposition of two places, the correlation between position and internal energy would soon cause the duality to 'decohere' to the molecule taking just one path, they suggest. “In most situations decoherence is due to something external; here it’s as though the internal jiggling is interacting with the motion of the molecule itself,” adds Pikovski.

Scientific American: Gravity Kills Schrödinger's Cat, Elizabeth Gibney and Nature magazine

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Hype Material...

Fig 1. Graphene and its descendants: top left: graphene; top right: graphite = stacked graphene; bottom left: nanotube=rolled graphene; bottom right: fullerene=wrapped graphene (adapted from ref.[1]).2
National University of Singapore


Topics: Graphene, Materials Science, Nanotechnology, Semiconductor Technology, STEM


Though the article tends to reset expectations, I think there is still a lot of good research to do with graphene in the foreseeable future. The statement of being "decades" out shouldn't discourage anyone. There's room for a few more scientists; a few more Nobel's that are either currently in grad school, in kindergarten or might not have even been born yet. We just have to have the foresight to build the education infrastructure to develop the young people that will do it in this country or elsewhere (likely Singapore). Somewhat irritatingly, the microwave and the Internet have given us a sense of instantaneous expectations in research and especially politics. May we never get to the point where we can walk up to a 3-D printer (the Heisenberg Uncertainty Principle pretty much kills all hope of a replicator) and say: Tea, Earl Grey: Hot. Instead of the Star Trek post-apocalyptic utopia, we may be insufferable to the point of obsessive compulsive, if - like our conundrums with our mobile devices and microwaves - such a device quits working...

The wonder material. It’s just one atom thick but 200 times stronger than steel; extremely conductive but see-through and flexible. Graphene has shot to fame since its discovery in 2004 by UK-based researchers Andre Geim and Konstantin Novoselov, for which the University of Manchester pair were awarded the 2010 Nobel prize in physics.

We’ve heard the facts. We’ve read about how graphene could push the boundaries of today’s technology in almost unlimited ways. We’ve even pictured an elephant balanced on a pencil. But looking past the headlines, it’s clear that a lot of the most exciting areas of graphene science are still in the early stages. It will be years, decades perhaps, before we see the first graphene-enhanced smartphones, aeroplanes or bulletproof vests. But beyond these pie-in-the-sky promises, the underlying research is gathering pace.

Scientific American: Graphene: Looking beyond the Hype, Emma Stoye and ChemistryWorld

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To Explain the World...




Topics: Nobel Laureate, Nobel Prize, NSBP, Steven Weinberg, Theoretical Physics, World Science Festival


The above is not the cover of "To Explain the World: The Discovery of Modern Science." I downloaded that to my Kindle. This is just an autographed copy of one of his earlier famous books I'm proud to own. I'm equally proud to have met him.

As I've said, I met Dr. Weinberg at an NSBP conference in Austin, Texas in 2011. I meant to attend the World Science Festival in New York and hear this lecture personally. I alas, had a mandatory training related to work (it was good, though I went kicking and because it was good, not quite screaming towards the end of it). So accept my own consolation prize with the embed below. Consolation prize #2: I joined the World Science Festival as my "Father's Day" present to myself. I'll hopefully attend - barring anything else put on my schedule - next year.

Amazon.com:
To Explain the World: The Discovery of Modern Science, Dr. Steven Weinberg

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Gooeyness and Robots...

To restore their ability to survive in the ocean, the amputated jellyfish larvae simply rearranged their remaining arms instead of growing new ones.

Courtesy of Michael Abrams/Ty Basinger


Topics: Biology, Humor, Jellyfish, Robotics, Self-Healing


Am I the only one who thinks this reminds me of the shape-shifting T-1000 in the old Terminator II: Judgment Day?

For many sea creatures, regrowing a lost limb is routine. But when a young jellyfish loses a tentacle or two to the jaws of a sea turtle, for example, it rearranges its remaining limbs to ensure it can still eat and swim properly, according to a new study published June 15 in Proceedings of the National Academy of Sciences. The discovery should excite marine enthusiasts and roboteers alike, the authors say, because the jellyfish’s strategy for self-repair may teach investigators how to build robots that can heal themselves. “It’s another example of nature having solved a problem that we engineers have been trying to figure out for a long time,” says John Dabiri, a biophysicist at Stanford University who had discussed the project with the study investigators but was not involved with the research.

Scientific American:
Jellyfish "Gooeyness" Could Be a Model for Self-Healing Robots, Sabrina Imbler

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