Reginald L. Goodwin's Posts (3028)

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D-Dalus...



Last year, the Austrian engineering firm IAT21 set out to construct a flying machine that floated like a hummingbird, traveled as fast as a jet, was as quiet as a hot-air balloon, and was simple enough that a car mechanic could repair it. The company’s working prototype, called D-Dalus, is roughly five feet by three feet square and can lift about 100 pounds. But the size and lift are not what’s most impressive. A flying machine with no airfoil, rotor or jet propulsion can travel where most cannot: in very tight spaces and through terrible weather.





ROTOR ASSEMBLIES

The craft’s four rotors spin at 2,200 rpm, and six blades attached to carbon-fiber disks create directional thrust. The blades act as mini airfoils, their angle of attack constantly shifting in relation to rotation. For vertical lift, a blade’s leading edge rises away from the center of the disk at the top of its rotation and toward the center of the disk at the bottom [pictured], creating a pressure differential.

FRICTIONLESS BEARINGS

Existing bearings were unable to withstand 1,000 Gs of force between the carbon-fiber disks and their blades and still deliver some degree of maneuverability. Engineers at IAT21 developed their own bearings, shaped like metal barrels, that hold up to the force better than spheres (think: arches) but can still roll enough for the blades to move.

In Greek mythology, Daedalus /di:dəlɪs/ or /dɛdəlɪs/ (Ancient Greek: Δαίδαλος, meaning "clever worker"; Latin: Daedalos; Etruscan: Taitale) was a skillful craftsman and artisan.[1][2] He is the father of Icarus and Iapyx and the uncle of Perdix.





Daedalus is first mentioned by Homer as the creator of a wide dancing-ground for Ariadne.[12] He also created the Labyrinth on Crete, in which the Minotaur (part man, part bull) was kept. In the story of the labyrinth Hellenes told, the Athenian hero Theseus is challenged to kill the Minotaur, finding his way with the help of Ariadne's thread. Daedalus' appearance in Homer is in an extended simile, "plainly not Homer's invention," Robin Lane Fox observes: "he is a point of comparison and so he belongs in stories which Homer's audience already recognized."[13] In Bronze Age Crete, an inscription da-da-re-jo-de has been read as referring to a place at Knossos,[14] and a place of worship.[15]

In Homer's language, objects which are daidala are finely crafted. They are mostly objects of armour, but fine bowls and furnishings are daidala, and on one occasion so are the "bronze-working" of "clasps, twisted brooches, earrings and necklaces" made by Hephaestus while cared for in secret by the goddesses of the sea.[16] Wikipedia

Popular Science: How D-Dalus Flies Like Nothing Else

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Phobos Eclipse...



Images taken with a telephoto-lens camera on NASA's Mars rover Curiosity catch the larger of Mars' two moons, Phobos, passing directly in front of the sun -- the sharpest images of a solar eclipse ever taken at Mars.

The images are the first full-resolution frames downlinked to Earth from an Aug. 17, 2013, series. The series may later provide a movie of the eclipse. Curiosity paused during its drive that day to record the sky-watching images.



"This event occurred near noon at Curiosity's location, which put Phobos at its closest point to the rover, appearing larger against the sun than it would at other times of day," said Mark Lemmon of Texas A&M University, College Station, a co-investigator for use of Curiosity's Mastcam. "This is the closest to a total eclipse of the sun that you can have from Mars."

DEIMOS (or Deimus) was the god (daimon) of fear, dread and terror, and his twin-brother PHOBOS (Phobus) of panic fear, flight and battlefield rout. reference

Mars has two known moons, Phobos and Deimos,[1] which are thought to be captured asteroids.[2] Both satellites were discovered in 1877 by Asaph Hall[3] and are named after the characters Phobos (panic/fear) and Deimos (terror/dread) who, in Greek mythology, accompanied their father Ares, god of war, into battle. Ares was known as Mars to the Romans. It is possible that Mars may have moons smaller than 50 – 100 meters and a dust ring between Phobos and Deimos may be present but none have been discovered.[4] Wikipedia

Science Daily: NASA Mars rover views eclipse of the sun by Phobos

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Emancipation...

Image source

I passed through Barnes and Noble yesterday, and happened on "The Nazi Occult War" by Michael Fitzgerald. The Vril Society; the New Teutonic Knights; Black Camelot; the Nazi Occult Bureau; Atlantis and Aryan science: then on the book's back cover (or, at least this version of it - meant to "hook" you into buying it), something stuck out that startled me - the Nazis spent more on finding Atlantis than we did on the Manhattan Project. It would seem that part of the Marvel "Captain America" movie and their search for the Tesseract appears to have been based on this borrowed historical fact.

Think about that a moment...

I had my misgivings more than anyone, raised on inane "duck and cover" drills that wouldn't even literally CYA...part of the Nazi's undoing was an adherence to what could not be observed, experimented on or proven; a mental divorce from the facts as they were; hence they were victims of "magical thinking" on steroids, supported by an ideology reinforced by their governing structure.

Fast-forward to the bio of current German Prime Minister Angela Merkel:

At school, she learned to speak Russian fluently, and was awarded prizes for her proficiency in Russian and Mathematics.[15] Merkel was educated in Templin and at the University of Leipzig, where she studied physics from 1973 to 1978. While a student, she participated in the reconstruction of the ruin of the Moritzbastei, a project students initiated to create their own club and recreation facility on campus. Such an initiative was unprecedented in the GDR of that period, and initially resisted by the University of Leipzig. However, with backing of the local leadership of the SED party, the project was allowed to proceed.[16] Merkel worked and studied at the Central Institute for Physical Chemistry of the Academy of Sciences in Berlin-Adlershof from 1978 to 1990. After being awarded a doctorate (Dr. rer. nat.) for her thesis on quantum chemistry,[17] she worked as a researcher and published several papers. Wikipedia

MSNBC has promoted a hash tag and site: #AdvancingTheDream. My commentary on how I was working to advance the dream was very simple and straight-forward: STEM education = emancipation.

China's top leadership seem to possess science backgrounds, in contrast: we have 9 out of 538 in the House of Representatives and the Senate with STEM backgrounds.


Dr. King was refreshingly a Trekkie (Trekker is the modern phrase; Roddenberry corrects). Unlike his theological contemporaries today, science didn't appear to threaten him or his personal beliefs; he found common cause with persons inside and outside of his culture and faith patterns.

STEM education = emancipation, and godspeed lucidity.

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Photonic Quantum Systems...



Summary:


Optical frequency conversion, in which the color of light is changed, is a process that has numerous applications in physics and technology. For example, green laser pointers typically involve second harmonic generation, where a strong beam produced by a laser at 1064 nm is frequency doubled in a nonlinear crystal to produce a visible beam at 532 nm. From the perspective of quantum and classical information processing, the ability to manipulate the color of light, and in particular, quantum states of light, can be an extremely important resource. First, it can be used to connect quantum systems operating in different frequency regions.


Frequency conversion, if accomplished in a manner that preserves all other quantum properties of light, can enable interfacing between these different components of future quantum information processing systems. Such quantum frequency conversion may also be particularly relevant for solid-state quantum optical systems, such as those based on semiconductor quantum dots. This is because such systems invariably suffer from “inhomogeneous broadening”, in which small variations in geometry and/or composition cause the quantum dots to emit at slightly different wavelengths, which can be limiting in applications where identical photons are required.

NIST: Frequency Conversion Interfaces for Photonic Quantum Systems

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Zombie Uppers...


Lurking at the fringes of the periodic table, superheavy element 115 has been a favoured material in UFO conspiracy theories and video games. Now we may have evidence that it actually exists.

A group led by Dirk Rudolph of Lund University in Sweden reports the creation of 30 atoms of element 115, informally called ununpentium. Their sightings back up previous reports from a group in Russia, although the results must be reviewed by an international chemistry committee before they are deemed official.

Superheavy elements are more than scientific curiosities. Seeking them allows us to probe the boundaries of matter and possibly find the "island of stability", a group of heavy elements that scientists predict will be stable for decades – if they could only be produced. If confirmed, the recent sighting would include the first observations of X-ray and gamma ray emissions from the decay of element 115, which could illuminate theories about the structure of superheavy nuclei in general.

I know a poet in Austin that uses the stage name: "Element 615," which would make for a HUGE Periodic Table, let alone you'd be doing the electron configuration for a bunch of Sundays! But my friend is deep/heavy, thus STEM has impacted the arts.

BTW: ununpentium's configuration is:  [Rn] 5f14 6d10 7s2 7p3, and that's shorthand of a substantial nightmare if you had to memorize it for an exam, and scarier than any flesh eating, limping zombie.

There will be a naming contest, and conspiracy theorists that will assign this to the coming apocalypse of the undead (which is funny, because apocalypse from Greek means "reveal," not disaster).

Anyway, TRMS had to me, the funniest presentation in its "Moment of Geek" that in a break from Solid State Device homework made me laugh out loud!

Happy Friday!

New Scientist: Fresh evidence emerges for superheavy element 115


Visit NBCNews.com for breaking news, world news, and news about the economy
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The Matrix...

Nature

Imagine waking up one day and realizing that you actually live inside a computer game,” says Mark Van Raamsdonk, describing what sounds like a pitch for a science-fiction film. But for Van Raamsdonk, a physicist at the University of British Columbia in Vancouver, Canada, this scenario is a way to think about reality. If it is true, he says, “everything around us — the whole three-dimensional physical world — is an illusion born from information encoded elsewhere, on a two-dimensional chip”. That would make our Universe, with its three spatial dimensions, a kind of hologram, projected from a substrate that exists only in lower dimensions.



This 'holographic principle' is strange even by the usual standards of theoretical physics. But Van Raamsdonk is one of a small band of researchers who think that the usual ideas are not yet strange enough. If nothing else, they say, neither of the two great pillars of modern physics — general relativity, which describes gravity as a curvature of space and time, and quantum mechanics, which governs the atomic realm — gives any account for the existence of space and time. Neither does string theory, which describes elementary threads of energy.

One of the most obvious questions to ask is whether this endeavour is a fool's errand. Where is the evidence that there actually is anything more fundamental than space and time?

A provocative hint comes from a series of startling discoveries made in the early 1970s, when it became clear that quantum mechanics and gravity were intimately intertwined with thermodynamics, the science of heat.

Even if it is correct, the thermodynamic approach says nothing about what the fundamental constituents of space and time might be. If space-time is a fabric, so to speak, then what are its threads?

One possible answer is quite literal. The theory of loop quantum gravity, which has been under development since the mid-1980s by Ashtekar and others, describes the fabric of space-time as an evolving spider's web of strands that carry information about the quantized areas and volumes of the regions they pass through6. The individual strands of the web must eventually join their ends to form loops — hence the theory's name — but have nothing to do with the much better-known strings of string theory. The latter move around in space-time, whereas strands actually are space-time: the information they carry defines the shape of the space-time fabric in their vicinity.

Nature: Theoretical physics: The origins of space and time

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Luddites Lament...

Image source

One of the primary reason that stands out for the transistor was driven by NASA and the need to reduce cargo space and increase computing power for orbital and missions to the moon - before that, slide rules. I know I just tweaked the die hard "conspiracy theorists" out there that don't believe we went to the moon, yet ardently believe Area 51 has aliens instead of high tech devoted to aerospace (see: "Zero Dark Thirty" - they mentioned it) and the pyramids couldn't have been built by the same North African Egyptian architects the Romans thought enough of to "import" to the empire and build most of their modern architecture and technology: aqueducts, arches, obelisks (think Washington Monument); plumbing.

The conspiracy theorists, I feel, cling to their extravagant notions because: 1. They want to be the first to say "ah-ha! Told you so!" 2. They are making up for inadequacies in other life areas, like actually earning a degree. 3. It's a way not to face reality and put their gray matter to real world problems for which many of us...don't have easy answers.

The original Luddites protested the advent of labor saving textile machines; riots broke out. Ultimately of course, capitalism with the assist of the English government won. I submit the Luddites should have fought hard not to break spindles, but for an equitable system of education and retraining, as we should here.

Technology replaces the need for middle-level workers; confounds the romanticism of "working yourself up by your own bootstraps"; places stipulations on positions in the "minimum requirements" narrative description; encourages students to pursue at least a college degree. A robot can replace many workers that used to drill a widget: become the one who repairs the robot! We're in a dark balance of a moribund way to measure unemployment, as in you are unemployed if receiving a paycheck from the government; never a measure of an under-employment index, i.e. you're making less that you used to (found myself in that dilemma for a few years). To a certain extent, that's reflected in consumer confidence and purchasing patterns. Because of that previous wilderness experience, I am studying as my info to the right (see under E = MC2) suggests; and due to lack of time or interest in fantasy, I don't engage much in conspiracy theories (they're not graded, not part of any interview process I'm aware of). Case in point: Texas Senator Ted Cruz actually being born in another country (Canada is: requires a passport to go to the Canadian side of Niagara Falls). He is a natural-born US citizen due to his mother's citizenship: if the current president had been born in Kenya (he was not); this logic would also apply to him. Karma always repays with irony.

Greed is keeping minimum wage minimum (thank God Australia ignores our stellar inane example): some in the canopy of the economy would like to eliminate it entirely. That has the logic of a rain forest burning its own tree trunks to preserve leaves.

Our education system hasn't much modernized from its Prussian model that prepared factory workers: it's no accident a factory is called a "campus"; you're encouraged to take career specific classes and be life-long learners; you have a defined lunch break/hour; bells trained us in school like Pavlov's dogs, herding us to and fro. We're renaming and reclaiming the same insane testing regimen that no other country ahead of us in STEM graduates and careers follow. Initially, academies in the US were set up strictly along the color line vis-a-vis de jure segregation. I see no difference in its de facto modern incarnation. Some wishing for a utopia that never was has the same impact as "Waiting for Godot."

At one end are so-called abstract tasks that require problem-solving, intuition, persuasion and creativity. These tasks are characteristic of professional, managerial, technical and creative occupations, like law, medicine, science, engineering, advertising and design. People in these jobs typically have high levels of education and analytical capability, and they benefit from computers that facilitate the transmission, organization and processing of information.

On the other end are so-called manual tasks, which require situational adaptability, visual and language recognition, and in-person interaction. Preparing a meal, driving a truck through city traffic or cleaning a hotel room present mind-bogglingly complex challenges for computers. But they are straightforward for humans, requiring primarily innate abilities like dexterity, sightedness and language recognition, as well as modest training. These workers can’t be replaced by robots, but their skills are not scarce, so they usually make low wages.

Computerization has therefore fostered a polarization of employment, with job growth concentrated in both the highest- and lowest-paid occupations, while jobs in the middle have declined. Surprisingly, overall employment rates have largely been unaffected in states and cities undergoing this rapid polarization. Rather, as employment in routine jobs has ebbed, employment has risen both in high-wage managerial, professional and technical occupations and in low-wage, in-person service occupations. (1)

This is a real-world problem, and testing regimens are not going to raise us out of it; fitting children through some predetermined model is not going to advance us; teaching made-up controversies about the origin of the universe, aliens, cabals and evolution aren't going to make us smarter: we'll just become more of a caricature as we fall further and further behind.

Sadly, this is not a new concept introduced in the NY Times (2); as Ecclesiastes said: "there are no new things under the sun."

So set your sights on the immediacy of now, o theorists!
Solve the Bermuda Triangle and Bigfoot later...

1. NY Times: How Technology Wrecks the Middle Class
2. James Boggs: The American Revolution - Pages From a Negro Worker's Notebook

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Zeno Diamonds...


ABSTRACT: The quantum Zeno effect, i.e. the inhibition of coherent quantum dynamics by measurement operations is one of the most intriguing predictions of quantum mechanics. Here we experimentally demonstrate the quantum Zeno effect by inhibiting the microwave driven coherent spin dynamics between two ground state spin levels of a single nitrogen vacancy center in diamond. Our experiments are supported by a detailed analysis of the population dynamics via a semi-classical model.


"The quantum Zeno effect is a situation in which an unstable particle, if observed continuously, will never decay," from Zeno's arrow paradox: "If everything when it occupies an equal space is at rest, and if that which is in locomotion is always occupying such a space at any moment, the flying arrow is therefore motionless." (WIKIPEDIA)
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BitCoins and Blank Checks...



Based upon the mood and tenor of the 50th anniversary reenactment of the March on Washington, this simulation by Econo Physicists seems not to shed light on much hope of things getting more equitable.

Slouching towards dystopia...


From Technology Review


The Matthew effect





In January 2009, a small group of Internet enthusiasts began an unusual economic experiment when they began to trade a new type of digital cash known as BitCoin. After a shaky start, the idea caught on and grew rapidly after 2011.

Today, bitcoins can buy a wider range of goods and services. In total, the BitCoin marketplace has hosted over 17 million transactions and the value of all the bitcoins in circulation is over $1 billion.

One interesting aspect of this marketplace is that the complete list of all transactions is publicly available. And this gave Daniel Kondor and buddies at Eotvos Lorand University in Hungary an idea.

Kondor and co say that the evolution clearly occurred in two separate phases. Before 2011, the system was used only by a few enthusiasts and the bitcoins had no real-world value. During this time, there was little activity and the various measures of network structure varied hugely.

In 2011, however, BitCoin began to get significant media coverage which attracted many more users. The currency also became more attractive after an exchange was set up that allowed bitcoins to be traded for dollars. During this second phase, bitcoins started to function as a real currency.

The team’s key finding from this second phase is related to wealth accumulation. Kondor and co say that the network grew by preferential attachment. In other words, a node with a large number of links is likely to attract more links than a node with only a few links.

This is a well-known effect in network science. Economists call it the Matthew effect after the biblical observation that the rich get richer.

"And He has made from ONE blood every nation of men to dwell on all the face of the earth, and has determined their pre-appointed times and the boundaries of their dwellings," Acts 17:26
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Last Battlefield...


Today on the calendar is not the 50th Anniversary of the March on Washington: that will occur 28 August, next Wednesday.

There will be a reinactment commemoration tomorrow. I was one years old and a few days at the time. Soldiers like my sister and Representative John Lewis were in the fight: arrested, beaten, bitten, [smoke] blown in faces, cursed, hosed, jailed, spat on - drilled ad nauseum on passive psychological resistance techniques that would have made SERE trainees cringe.

50 years later: Jackie Robinson's statue is desecrated like he never played the game or changed the world; Representative Stockman wants a repeat performance of the Missouri rodeo clown in Texas (ironic he represents the 36th district where James Byrd died in Jasper); section 4 of the Voting Rights Act gone and draconian ID laws/21st Century Poll Tax in effect and "Moral Mondays" in my home state. I'm not sure if it will be a commemoration, or a wake. We shall see.

One of the most powerful Trek episodes for me as a youth was "Let That Be Your Last Battlefield." Recall, the 60s weren't just "make love, not war": there was a lot of both. Vietnam overseas, protests of the war and Civil Rights/Voting Rights marches at home. Suspicions that any deviance from the John Birch Society authoritarian "norm" was judged subversive; communist, therefore necessarily purged and crushed from existence. Judging from the date of airings, its first showing came nine months after the sad assassination of Dr. Martin Luther King.

It also aired during the climate of the Cold War, a period many seemingly LONG to get back to (that madness), where the nuclear "plan" was called MAD: mutually assured destruction. We still possess that insane power, essentially holding humanity hostage; guns to our own heads.

Gene Roddenberry put an interracial, international crew together: Nyota Uhura (literally: "Freedom Star" in Kiswahili); Hikaru Sulu (for the Sulu sea, meant to represent all of Asia, but of fictional Japanese origin); Pavel Andreievich Chekov (a RUSKIE for crying out loud!). You could say in this fictional treatment, Bele and Lokai "stood their ground" until the end. Roddenberry, as I've commented before developed his own eschatology, yet positive and relevant that we might just survive our own hubris, essentially stemming from old tribal conflicts and current contemporary displays of breathtaking stupidity and arrogance.

This episode was a stark warning; the inevitable consequences of NOT...

Source: Wikipedia

"Let That Be Your Last Battlefield" is the fifteenth episode of the third season of the original science fiction television show Star Trek. It was first broadcast on January 10, 1969, and repeated on August 12, 1969. It was written by Oliver Crawford, based on a story by Gene L. Coon (writing under his pen name "Lee Cronin") and directed by Jud Taylor. The script evolved from an outline by Barry Trivers for a possible first season episode called "A Portrait in Black and White". The script was accepted for the third season following budget cuts. The episode guest-stars Lou Antonio and Frank Gorshin, best known for his role as The Riddler in the Batman live-action television series. Contrary to popular rumor and articles, Gorshin was not Emmy nominated for this role.

In this episode, the Enterprise picks up two survivors of a war-torn planet, who are still committed to destroying each other aboard the ship.

Amazon link


Once the Ariannus mission is completed, Bele takes control of the Enterprise again, but this time he deactivates the auto-destruct in the process and sends the ship to Cheron. Once there, the two aliens find the planet's population completely wiped out by a global war fueled by insane racial hatred. Both Lokai and Bele stare silently at the destruction on the monitor and realize they are the only ones left of their race (or, as they see it, their "races").

Instead of calling a truce, the two beings begin to blame each other for the destruction of the planet and a brawl ensues. As the two aliens fight, their innate powers radiate, cloaking them with an energy aura that threatens to damage the ship. With no other choice, Kirk sadly allows the two aliens to chase each other down to their obliterated world to decide their own fates, consumed by their now self-perpetuating mutual hate. Forlorn, Lt. Uhura asks if their hate is all they ever had. Kirk ruefully says no...but it is all they have left.

"Our scientific power has outrun our spiritual power. We have guided missiles and misguided men."

"A nation that continues year after year to spend more money on military defense than on programs of social uplift is approaching spiritual doom."

"We must learn to live together as brothers or perish together as fools."

"The choice is not between violence and nonviolence but between nonviolence and nonexistence."

Dr. Martin Luther King Jr., BrainyQuote.com

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Nuclear Pasta...

Credit: Columbia University

Pulsars are neutron stars—remnants from supernova explosions. Neutron stars have immensely huge magnetic fields (think ~1012 times Earth's magnetic field). These fields accelerate charged particles, and in the course of that acceleration, light is emitted. But because of the nature of the fields, the light is emitted in a rather narrow cone. Because neutron stars rotate, this cone is scanned like a search light across the sky. So we only observe pulsars if the powerful beam happens to sweep across the face of the Earth.

This pasta has a distinctive property: it changes the way energy is dissipated and transported within the star. The magnetic field generates currents in the pasta region, which provides an intermediate step in converting magnetic energy to rotational energy. Hence, the crust changes the way the star spins down. In a series of models that take different neutron star masses, different crust diameters, and differently pasta region sizes, researchers from Spain showed that without a pasta region of some kind, a neutron star continues to spin down indefinitely, and we should observe X-Ray pulsars with periods that extend out past one minute.

The pasta, however, disrupts the magnetic field, stealing energy from it. In the end, that energy is transferred to rotational energy, keeping the spin period up. This is not such an efficient process, though, so for the early stages of the neutron star's life, it rapidly spins down. This continues until the additional energy from the magnetic field counters the losses due to other processes, stabilizing the rotational period at the cost of the magnetic field. The exact period at which this occurs depends on the mass of the star, the thickness of the crust, and the fraction of impurities in the crust.

Ars Technica: X-Ray pulsars boil “nuclear pasta” to keep spinning

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When Disorder is a Good Thing...



A material’s nanostructure is decisive in determining how resistant it is against corrosion

 

August 08, 2013

 

Corrosion eats away 75 billion euros of economic output annually in Germany alone. But it may soon be possible to better assess which steels and other alloys will be affected, and how to limit the damage: An international team led by scientists from the Max-Planck-Institut für Eisenforschung GmbH in Düsseldorf analysed an amorphous steel comprising iron, chromium, molybdenum, boron and carbon. They found that the more ordered a material’s structure is, and the more uneven the distribution of its atoms, the more easily it is corroded by rust. If the elements of the alloy don’t form a regular crystal lattice and are distributed completely uniformly across the material, then, under corrosive conditions, a passivation layer forms on its surface and protects it from rusting. If, in contrast, ordered nanocrystals form that sometimes contain more chromium and sometimes more molybdenum, the corrosion quickly eats away the material because no protective passivation layer forms. These findings give materials scientists clues as to what they should pay attention to regarding the composition and production of materials.

 

Max Planck-Gesellschaft: Disorder creates rust protection

Note: On vacation. Blog will auto-post next Friday, 23 August 2013.
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PMC...


PMC stands for "Principle of Maximum Conformality." I'll let you explore it at the article's link.

I am 51 today. And physics is just as exciting to me as it was at 15...or 10...or 5...

"Throughout history, artists and poets, lovers and mystics, have known and written about the 'knowing' that comes from the loss of self - from the state of subjective fusion with the object of knowledge." Evelyn Fox Keller

"The state of feeling which makes one capable of such achievements is akin to that of the religious worshipper or of one who is in love." Albert Einstein


Three theoretical physicists have taken an important step toward eliminating theoretical ambiguities from the staggeringly complicated mathematics used to explore the interactions of quarks, the tiniest known bits of matter inside protons and neutrons, and gluons, the enigmatic particles responsible for keeping them trapped there. Simplifying these calculations can make them easier for other particle theorists to perform and lead to more accurate predictions for experimental particle physicists to test.

The theory describing those interactions is known as quantum chromodynamics (QCD), and is an important component of the Standard Model, the reigning theory of the interactions of subatomic particles.

"An important goal in high energy physics is to make predictions that are as precise as possible," said SLAC theoretical physicist Stan Brodsky. "This makes tests of QCD more rigorous. Most important, if QCD doesn't pass our experimental tests, it could reveal new physics beyond the Standard Model."

Stanford:
SLAC Theorist Helps Sharpen Tests of Fundamental Theory in High Energy Experiments

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Perfectly Dope...

In this rendering, never-before-seen magnetic excitations ripple through a high-temperature superconductor, revealed for the first time by the Resonant Inelastic X-ray Scattering technique. By measuring the precise energy change of beams of incident x-rays (blue arrow) as they struck these quantum ripples and bounced off (red arrow), scientists discovered excitations present throughout the entire LSCO [lanthanum, strontium, copper, oxygen] phase diagram.

UPTON, NY—Intrinsic inefficiencies plague current systems for the generation and delivery of electricity, with significant energy lost in transit. High-temperature superconductors (HTS)—uniquely capable of transmitting electricity with zero loss when chilled to subzero temperatures—could revolutionize the planet's aging and imperfect energy infrastructure, but the remarkable materials remain fundamentally puzzling to physicists. To unlock the true potential of HTS technology, scientists must navigate a quantum-scale labyrinth and pin down the phenomenon's source.

 

Now, scientists at the U.S. Department of Energy's (DOE) Brookhaven National Laboratory and other collaborating institutions have discovered a surprising twist in the magnetic properties of HTS, challenging some of the leading theories. In a new study, published online in the journal Nature Materials on August 4, 2013, scientists found that unexpected magnetic excitations—quantum waves believed by many to regulate HTS—exist in both non-superconducting and superconducting materials.

 

"This is a major experimental clue about which magnetic excitations are important for high-temperature superconductivity," said Mark Dean, a physicist at Brookhaven Lab and lead author on the new paper. "Cutting-edge x-ray scattering techniques allowed us to see excitations in samples previously thought to be essentially non-magnetic."

 

LightSource.org:
Scientists Discover Hidden Magnetic Waves in High-Temperature Superconductors

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Friday...


This relates to a post that appeared on Friday's anniversary. A date we sadly didn't commemorate more broadly nor recollect its significance.

 

It was the second bombing on Nagasaki, some say since the Japanese were looking for a path to surrender, completely unnecessary. Possibly a sophomoric display of military might on our part.

 

It was the beginning of being raised on "duck and cover" drills (as IF that would save anyone!).

 

It was bomb shelters if you could afford them (suburbia for the most part), stockpiling supplies and perhaps the genesis of people waiting for doomsday rather than solving the problems that could lead to it.

 

It was the aftermath of the darker side of science: the ability to make academic advances, medical miracles, technological wonders and yet possess within ourselves the ability to commit mass global genocide by the slow moving train wreck of polluting the atmosphere and oceans, or the flash of thermonuclear brilliance followed by its inevitable winter.

 

It was once considered "scientific" to promote eugenics. A Nobel laureate in physics, William Shockley, and co-founder of the transistor, one of its staunchest advocates.

 

I am an advocate of all branches of society: art, history, literature, politics, religion, science, etcetera working together rather than pointing fingers, reciting talking points and placing blame on one another.

 

Or: we may soon discover the other reason the stars of SETI are silent, is the aliens eventually became their own entropy...

Today marks the 68th anniversary of the dropping of an atomic bomb on the Japanese city of Nagasaki. The bomb, named “Fat Man,” was the first plutonium bomb ever to be deployed, and followed the Aug. 6 dropping of the uranium bomb “Little Boy” on Hiroshima.

But even after 68 years, both the history of nuclear weapons and their future are still the subject of debate.

Speaking at the memorial ceremony in Nagasaki, Mayor Tomihisa Taue publicly condemned Japan’s government for failing to push nuclear disarmament. Mr. Taue spoke out against the administration of Prime Minister Shinzo Abe – who was present – for failing to sign a UN disarmament agreement in April, according to the Japan Daily Press. Taue said the refusal to sign meant Japan was “betraying the expectations of global society.”

Christian Science Monitor:
Nagasaki bombing: Remembering - and starting to forget - its legacy

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Physics and Politics...



Rep. Rush Holt, an astrophysicist, was managing a Princeton University lab trying to harness the power of nuclear fusion when he won a seat in Congress in 1998. He ousted the incumbent, in part, by attacking the Republican’s decision to sing a mock lullaby — “Twinkle, Twinkle, Kenneth Starr” — on the House floor in praise of the special prosecutor investigating President Bill Clinton.

Rush Holt Holt’s supporters display bumper stickers that read, “My congressman is a rocket ­scientist.”

* On himself:

"I've always been an unusual member of Congress, partly because of my background, partly because of my approach to problems, partly because of my philosophy of governing. … I have a real commitment to the basic principles of equality and liberty."

* On helping the poor:

"The idea that somehow we had to guard so strongly against misuse of food stamps that we will deny hungry children food is not just hardhearted, it's cruel. … We have to get beyond the mentality in Washington that says we're a poor nation. We are not. We are the wealthiest nation in the world. … We have to get beyond the idea that the role of government is to provide ever more privilege for the already fortunate.

* On climate change:

"This is an urgent problem. … Climate change has to be dealt with by removing our emphasis on fossil fuels. … We are ruining our planet and killing people by the millions. … How do we do it? We have to keep presenting the facts. Presenting the evidence. And confronting those who would deny the evidence until they would deny it no more.

North Jersey: Senate Candidate Holt a fusion of physics and politics
PBS: Congressman vs. the Machine: Rocket Scientist Rep. Rush Holt Bests Watson

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