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Higgs MOOC...



ABOUT THE COURSE

The discovery of a new fundamental particle at the Large Hadron Collider (LHC), CERN is the latest step in a long quest seeking to answer one of physics’ most enduring questions: why do particles have mass? The experiments’ much anticipated success confirms predictions made decades earlier by Peter Higgs and others, and offers a glimpse into a universe of physics beyond the Standard Model.



As Professor Peter Higgs continues his inspiring role at Edinburgh University’s School of Physics & Astronomy, the experiments at the LHC continue.



This MOOC introduces the theoretic tools needed to appreciate the discovery, and presents the elementary particles at the tiniest scales ever explored. Beginning with basic concepts in classical mechanics, the story unfolds through relativity and quantum mechanics, describing forces, matter and the unification of theories with an understanding driven by the tools of mathematics.



Narrating the journey through experimental results which led to the discovery in 2012, the course invites you to learn from a team of world-class physicists at Edinburgh University. Learners participate in discussion of the consequences of the Higgs boson, to physics and cosmology, and towards a stronger understanding and new description of the universe.



REQUIREMENTS

The course requires a basic level of mathematical skills, at the level of a final-year school pupil. A basic knowledge of physics is helpful, but not required.

University of Edinburgh: The Discovery of the Higgs Boson (click "Join this course")

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Time and Entanglement...

Credit: Physics arXiv Blog; paper link below


Physics arXiv Blog: When the new ideas of quantum mechanics spread through science like wildfire in the first half of the 20th century, one of the first things physicists did was to apply them to gravity and general relativity. The result were not pretty.


It immediately became clear that these two foundations of modern physics were entirely incompatible. When physicists attempted to meld the approaches, the resulting equations were bedeviled with infinities making it impossible to make sense of the results.

Then in the mid-1960s, there was a breakthrough. The physicists John Wheeler and Bryce DeWitt successfully combined the previously incompatible ideas in a key result that has since become known as the Wheeler-DeWitt equation. This is important because it avoids the troublesome infinites—a huge advance.

But it didn't take physicists long to realise that while the Wheeler-DeWitt equation solved one significant problem, it introduced another. The new problem was that time played no role in this equation. In effect, it says that nothing ever happens in the universe, a prediction that is clearly at odds with the observational evidence.

This conundrum, which physicists call ‘the problem of time’, has proved to be thorn in flesh of modern physicists, who have tried to ignore it but with little success.

Then in 1983, the theorists Don Page and William Wooters came up with a novel solution based on the quantum phenomenon of entanglement. This is the exotic property in which two quantum particles share the same existence, even though they are physically separated.

Entanglement is a deep and powerful link and Page and Wooters showed how it can be used to measure time. Their idea was that the way a pair of entangled particles evolve is a kind of clock that can be used to measure change.

But the results depend on how the observation is made. One way to do this is to compare the change in the entangled particles with an external clock that is entirely independent of the universe. This is equivalent to god-like observer outside the universe measuring the evolution of the particles using an external clock.

In this case, Page and Wooters showed that the particles would appear entirely unchanging—that time would not exist in this scenario.

But there is another way to do it that gives a different result. This is for an observer inside the universe to compare the evolution of the particles with the rest of the universe. In this case, the internal observer would see a change and this difference in the evolution of entangled particles compared with everything else is an important a measure of time.

This is an elegant and powerful idea. It suggests that time is an emergent phenomenon that comes about because of the nature of entanglement. And it exists only for observers inside the universe. Any god-like observer outside sees a static, unchanging universe, just as the Wheeler-DeWitt equations predict.


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Antagonist Frequency analysis



During the discussion of high-quality and low quality fiction, a argument is usually made concerning antagonistic frequency rates. Simplified, this argument goes something like this:

Book proponent: "Sexy Vampires IV is the best Historical Slash-Vamp Dom Fiction out there!" 


Book Detractor: "Man! Slash-Vamp fiction is totally played, everyone is doing that these days." 


Insert you proposed antagonist into that conversation and you will get someone who will tell you that the Genre is over done, played out, or no longer interesting.  Additionally, any conversation of reasonable length with agents, publishers and marketers will eventually result in them telling you which particular genera of fiction they are tired of seeing.

The rise of self-publishing has pushed this situation into overdrive. Where originally, you had maybe a half-dozen entries in a particular genera a year from major and minor publishers, you now have hundreds, if not thousands, of attempts to tell a particular story.

What is lacking is historical perspective. Google's Ngram viewer gives some imperfect, but interesting, historical context to the antagonistic frequency debate.

(the charts here are pngs, check the Moorsgate Media Blog for interactive charts)

As shown above, the frequency of various antagonist (this is current through 2009) in English fiction is charted. Generally, in current fiction debates, Vampires and Zombies are singled out as being over-done in terms of genera.  However, Aliens as a concept has held a pretty consistent lead, and it currently, even though there has been some decline,is at a historically above average position.  Interestingly, the concept of plagues, which can be related to Zombies, has been on a historical downward slop ever since a peak some time in the 1810's.

Robots, the term being unknown prior to Capek's seminal work, takes off after the publication of R.U.R., and hits a peak in the mid eighties (think original Terminator, transformers, etc.) that surpasses the popularity of vampires today. Sadly, we appear to be living in a world of "Peak Robot", due possibility in part to the rise of non-fictional robots in our everyday lives (e.g murderous drones, vacuum cleaners).

As a point of comparison, the next chart looks at the frequency of some events in fiction (we use aliens as the cross reference to the above chart)



As shown, the concept of the Rapture is down from its historical heights, but has recently made a resurgence, and appears to be on track to overtake Aliens in frequency.  However, from a Genera standpoint, no one argues if Rapture based fiction has reached "peak rapture". [ed. This chart only goes to 2009, it is goes to 2012, it might be that there was a serious crash after the Mayan Calendar failed to turn us into orbs of pure something.]

The point here is that Genera antagonist come and go, but without data, it is difficult to determine if present, or short term historical bias is altering peoples' perception of what is or is not a popular genera. Having some data is always a good rule of thumb changing behavior, concepts or positions.

moorsgatemedia.blogspot.com

Twitter: Moorsgate

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Stereotype Threat...

Scientific American, see [2] below

Stereotype threat refers to being at risk of confirming, as self-characteristic, a negative stereotype about one's group (Steele & Aronson, 1995). This term was first used by Steele and Aronson (1995) who showed in several experiments that Black college freshmen and sophomores performed more poorly on standardized tests than White students when their race was emphasized. When race was not emphasized, however, Black students performed better and equivalently with White students. The results showed that performance in academic contexts can be harmed by the awareness that one's behavior might be viewed through the lens of racial stereotypes. [1]

Scott Barry Kaufman seems to refer to this in his Scientific American article "The Need for Belonging in Math and Science" [2]:

From her earliest memories, Catherine Good was good at math. By second grade she was performing at the fourth grade level, sometimes even helping the teacher grade other students’ work. She was praised constantly for her “gift”, often overhearing her mother tell anyone who would listen that she was a “sponge” for anything mathematical.

As time went on:

Achieve she did. Good did so well as an undergraduate, that she decided to pursue a Ph.D. in mathematics. Again, she wasn't driven by the sheer joy, but by other forces:

“My counter-stereotypical achievement, coupled with my belief that those successes were rooted in an innate gift, not only fueled my academic pursuits, but also formed the basis for my academic identity.”

For awhile, Good performed as usual in her graduate program. But then something happened that would change the course of her career: her identity became threatened. As Good puts it, “the identity as a mathematician that I thought was so well-entrenched and established came crashing down, leaving me in a professional crisis.”

Despite her good grades, a flood of self-doubt crept in. She suddenly wondered: Was I simply no longer inspired by the level of rigor and originality necessary for graduate level mathematics? Was it the fact that for the first time in my academic life, I had to work, really work, at my studies?

And, finally...

Whatever the cause(s), one thing was certain: she no longer felt a sense of belonging in mathematics. As a result, she left mathematics.

I have had to come to grips with this in myself, having tried masters programs in physics at Texas State and Astrophysics at UT: certain things stick out to you.

1. You're the only "one." The cartoon above pertaining to the difference for women in STEM could also be of the one African American, Hispanic/Latino/Native American; the Asian that HAS to be good at math as a matter of genetics, so any questions for clarification and understanding means you're a defect somehow.

2. Some indication of that in my offspring. He's performing quite well in Civil Engineering, yet he often feels like "the one." I'm sure if he asked around campus, he'd find it not so unique.

Ironically, the strength of my taking a masters online is I am "one" of many "ones" online. We don't see each other; we only interact/question via email. I send homework in PDF. If I experience some form of stereotype threat, it is in my own self-doubt, which are many: am I too old to do this; will I be the only "one" in the room? There is a freedom and a loneliness in online anonymity, the only brief camaraderie I experienced when I inquired last year how they weathered Hurricane Sandy: Stevens University is in Hoboken, NJ.

I recall once that observation being made by someone I worked with at Motorola: "we're the 'only black engineers' in the room," my fellow alumni said. "And, we're the best damn engineers IN the room" I shot back. Despite that bravado, I wish I had Dr. JC Holbrook's paper on survival strategies [3] in many instances I felt the pressure of stereotype threat. Religion and spirituality - as she mentions - are forms of mental survival strategies (go see 12 Years a Slave) and cultural expression that if not abused by charlatans, pundits, lying politicians and political machinations spewing manipulative talking points, propels individuals and groups forward despite near insurmountable obstacles. Think of the Civil Rights movement. Unless society were to make a massive, herculean change towards eliminating inequality, this will remain necessary.


To go further beyond a masters, I'll have to emerge from online anonymity, even with my company behind me (as they enthusiastically are), I'll have to use survival strategies and fight within myself this "stereotype threat" that morphs into self-fulfilling prophecy for many of us. One is a promise I made to my parents. My journey in science started with a chemistry set and my first almost fatal experiment. Instead of discouraging me, they just barred me from repeating THAT particular one. As science lifts countries out of poverty, it has lifted me twice: once post the US Air Force; second eight years after a lay off from that same company where we were the "best damn engineers in the room." And I have obligated myself to finish what they planted in me and seed it forward to their grandchildren, and any other youth I can influence.

It is an important, internal and external struggle we ultimately must win. This country is bereft of a prosperous future without our triumph and our inputs.

1. Reducing Stereotype Threat: What is 'Stereotype Threat'?
2. SciAm Beautiful Minds: The Need for Belonging in Math and Science
3. P4TC: Survival Strategies

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And On The Eighth Day...

It is well known by those of the Christian Faith that the Lord God created the Earth, the Heavens and their Multitudes in six days...and He rested on the seventh day.

But what I'm interested in is what happens on the Eighth Day...after Creation has been lived in awhile...after the end of the Millennium and Satan is once more allowed to run free...after the Four Horsemen have mounted their steeds...after the spawn of Hell rises up from the Dark Realms and invades the Realms of the Living?

What happens on that day?

That is precisely the focus of the next exciting chapter in The Soul Eater Chronicles!

Chapter One has just been put to bed and we're already on to the next installment.

I can't wait to see how it all turns out!

I'm also playing around with possible artwork for the new eBook cover...check out this comp image...neat, huh?!  I'm definitely feeling this one!

Your buddy,

Wm Kane

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Review of Jimmy Pudge's The Booty Goblin

There's a new little monster everyone should be afraid of. The Booty Goblin is a little demon that has the strangest means of killing his victims. I love the mythos Pudge creates around this character. I love how the only thing it can say is 'booty booty booty'. And per usual, Pudge's easy style makes reading this story a breeze. I bought this book 2 days ago and barely read any of it the first day. One of the things I love most is the complete impossibility of predicting who is going to make it to the end of the story. Once again, I was wrong. Pudge isn't afraid to kill major characters before the third act. Ramps up the tension, leaving the reader wondering whom to hang his hopes on. I would highly recommend this story to anyone who has ever read and enjoyed a book by Jimmy Pudge. Download a copy here. Only $0.99.

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Thermomagnetism...

Seebeck Effect - see arXiv (1) below

EPFL scientists have provided the first evidence ever that it is possible to generate a magnetic field by using heat instead of electricity. The phenomenon is referred to as the Magnetic Seebeck effect or ‘thermomagnetism’.



A temperature difference across an electric conductor can generate an electric field. This phenomenon, called the Seebeck effect, lies at the root of thermoelectricity (heat turned into electricity), and is used to drive space probes and power thermoelectric generators, and could be implemented for heat-harvesting in power plants, wrist-watches and microelectronics. In theory, it is also possible to generate a magnetic field by using a temperature difference across an electrical insulator (‘thermomagnetism’). This has been referred to as the Magnetic Seebeck effect, and has enormous applications for future electronics such as solid-state devices and magnetic-tunnel transistors. In a breakthrough Physical Review Letters publication that has been promoted to “Editors’ Suggestion”, EPFL scientists have for the first time predicted and experimentally verified the existence of the Magnetic Seebeck effect.



Thermoelectricity and ‘thermomagnetism’



The Seebeck effect (thermoelectricity) — named after Thomas Johann Seebeck who first observed it in 1821 — is generated when electrons in an electric conductor move as a response to a temperature gradient. On average, the electrons on the hot side of the conductor have more kinetic energy and subsequently move at higher speeds than the electrons on the cold side. This causes them to diffuse from the hot to the cold side, generating an electric field that is directly proportional to the temperature gradient along the conductor.



Using an electrical insulator rather than a conductor, researchers led by Jean-Philippe Ansermet at EPFL have shown that a Magnetic Seebeck effect also exists. Because an insulator does not allow electrons to flow, a temperature gradient does not cause electrons to diffuse. Instead, it affects another property of electrons that forms the basis of magnetism and is referred to as ‘spin.’



In an insulator, a temperature gradient alters the orientation of electrons’ spin. Under certain conditions, this generates a magnetic field that is perpendicular to the direction of the temperature gradient. Similar to thermoelectricity described above, the intensity of the thermomagnetic field is directly proportional to the temperature gradient along the insulator. 2

 

1. Physics arXiv: Evidence for a Magnetic Seebeck Effect
2. Thermomagnetism: Using Heat to Make Magnets, Nik Papageorgiou, EPFL, Scientific Computing

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Thermal Transistors...



TECHNOLOGY REVIEW: In recent years, engineers have begun to design and test thermal transistors with some success. Their goal is to exercise the same control over heat that they already have over electric current–the ability to switch it on and off, to modulate it and even to amplify it.


That would be hugely useful for managing heat dissipation but also for creating thermal logic gates that can process information in the form of heat.

The thermal transistors built so far all work by modulating the flow of phonons, or thermal vibrations, from one material to another. For this to work, materials must be in physical contact with one another.

But there is another way for heat to flow–by radiative transfer. In this case, heat flows with the passage of thermal photons from one material to another. In this case, the materials do not need to be in physical contact.

Today, Philippe Ben-Abdallah at the Université Paris-Sud in France and Svend-Age Biehs at Carl von Ossietzky Universität in Germany, unveil the first thermal transistor to operate on thermal photons. The big advantage of this device is that it works at much higher speed than phonon transistors, potentially at light speed.

The design is simple. The transistor consists of three parts, which Ben-Abdallah and Biehs call the source, drain and gate, in analogy to a conventional transistor. The source and drain are made of silica and held at different temperatures to create a temperature gradient.

The source, which is hotter than the drain, emits thermal photons which transfer heat to the drain.

Physics arXiv: Near-field thermal transistor

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Cyber Bullying...

StopBullying.gov

Sadly, it's happened again. And each time it happens, I am diminished in the spirit of John Donne's Meditation 17; we are diminished as a nation because brilliance that shouldn't die so young, a candle that should illuminate the darkness...is extinguished.

It's not the first time I've discussed bullying. Scientists get bullied too, many are the survivors of some pretty awful bullying for just being curious; just being different than the "cool, accepted norms." Now, the bullies are young earth advocates, climate change deniers, museums that have Fred and Barney; dragons and zip lines (see Sunday's rant). Lately, the bullies staged a "Seinfeld shutdown" and come out of it in the spirit of Macbeth: "like sound and fury, signifying nothing!"

The dark side of technology is it empowers narcissistic psychopaths. Those are the only words that come to mind when disengagement, transfer to another school only intensifies pursuit for the perverse pleasure of causing harm to a fellow human being. Then when the unthinkable happens and that person takes their own life, the Facebook post is "IDGAF" with 30 likes? Of course now, the account was hacked. That remains to be proven. I sincerely hope if true, they do. It does not absolve them from the physical abuse Rebecca Ann Sedwick received from them offline; I can only imagine the hateful name-calling; the social ostracizing. If they were truly innocent, when she left their school, they should have left her alone.

The narcissists are not all young, as former NY congressman Anthony Weiner lived long enough to see himself become a byword. Internet addiction disorder seems to suggest stereotypical nerds, but I think it is the act of esteeming something that amounts to ones and zeros; mean girls and idols; more important than yourself feeds into a pathology that previously might have in other times made someone a successful "Type A."

I personally witnessed a brouhaha almost ignite in a 4th period physics class...over Facebook...on what one of the young ladies said about themselves to others. This is a generation that compared to previous ones - coming through segregation, poll taxes, Jim Crow and Civil Rights; The Vietnam War; the draft; the Cuban Missile Crisis; The Korean War; The Cold War; WWII and "meatless Tuesdays" have more privilege and less sacrifice than previous ones; their only crisis growing up in the shadows of 9-11, Afghanistan and Iraq...and bullies.

I've recently experienced similar treatment from a religious zealot. A year older than I from the same high school, I don't have much of a recollection of him. I've blocked him, and liberally block anyone else that I think not worth my time. Life is too precious and short. As a survivor of old-school, offline bullying, I relate too well, too personally with each of these stories.

Our minds were made for reason and real problems, reading literature, campfires and conversations. I will finish this post, as I do others in about 20 Terran minutes. I'll then go read an assignment and do problems in solid state electronics. I'll look at my Kindle and laugh. I'll talk to people and treat them with respect.

This is an essay I wrote regarding a young lady that took her life in NY earlier this year.

This, along with gun violence, is becoming a dark national addiction for which we need a Betty Ford intervention.

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For those interested in previewing the first two installments of the Darkside Trilogy, follow these links to the first four chapters of Discovery and the opening chapter of Conception:

Discovery tells the story of what happens in the United States of America when the country discovers a secret colony of African Americans living on the backside of the moon who have been there since before Neil Armstrong set foot on the moon.

For writers who may be interested in the construction of the story, these four chapters introduce the four main subplots of the story.

One of my main goals in writing the Darkside Trilogy was to make sure that the story was exciting, consistent and that the science and technology within the story was true-to-life. This series was written with an eye toward honoring the classic style of pioneers of the genera from the early years of the 20th Century.

Discovery - Chapter 1

Discovery - Chapter 2

Discovery - Chapter 3

Discovery - Chapter 4

Conception begins as a prequel, telling the 40-year story of how an extraordinary community of African Americans stole the world's march in the race to the moon, arriving several years before Neil Armstrong and Buzz Aldrin landed on the lunar surface.

And, Conception ends with the same events that conclude Discovery, however they are seen from the perspective of those who left Planet Earth for a new beginning, away from any influences of a still prejudiced United States of America.

Four high school friends, who bond over the dream of living somewhere free of the racial deprivations of America, come up with the most ambitious plan ever conceived by man.

That plan, carried out in secret, and without the influence of white America, launched an exodus from Earth that bore the most unbelievable technological, medical and scientific fruit known to man.

Conception - Chapter 1

For those here on BSFS who do purchase either or both of the installments of the Darkside Trilogy, please let me know so I may send you something by mail as a personal thank you for supporting my work.

I hope you enjoy the ride...

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no 96

If you haven't gotten a copy, download yours here. I would like to say thank you to everyone who already has one! I had no idea how this relaunch would go, but it has been a fantastic experience so far. A lot of people are responding to the new cover and I couldn't be happier with it. Now if we could just do something about that 47,700 number. My next goal is to crack the top 100 in Kindle sales. 

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Denouement...

T Shirt Guru

This is a repost with a bit of editing I think you'll find useful.

I've long championed what I like to term "conversational physics concepts," as well as diversity on this blog, particularly gender ascendancy in science, technology, engineering and math. Thus, my concentration this month wasn't all physics (though, I'm admittedly partial). For the nation to advance in the future, we need every one of us.

 

Hispanic Americans have contributed to our country in measurable ways in science, technology, engineering and mathematics. Knowledge is power: a cliche to be sure, but a commanding statement. Its corollary leads to poverty and personal powerlessness. Carl Sagan said: Science confers power on anyone who takes the trouble to learn it (although too many have been systematically prevented from doing so). Resist that systematic effort when you detect it with all your might. Get help and study; form groups; connect to local chapters of NSHP and SHPE; invite speakers. Too many ethnic minorities drop out of STEM because it is difficult. Anything worth mastering is. Think of the other things in your life that were hard, and you didn't give up. That is the determination I'd like you to bring to this fight. It's more than just a career in science: it is literally learning how to think, and you can apply that in any area of your lives. For a democracy to function, we need an electorate with critical thinking skills. The cost you pay in this challenge I offer to you will be evident and measurable; the cost of the loss of your genius to this country is frightening and incalculable.


It is my hope one or several posts during the month informed, entertained and inspired. I started these posts with something that struck me as wrong: that due to someone's name and attending a historically black college and university as an undergrad, they would most likely not get a grant from the National Institute of Health. It affected me because I know and have taught one such young man that in his future, this impediment will affect him: he currently attends Howard University in Biology Pre Med, and plans to research in Ear, Nose and Throat ailments. Something that because of my own struggles with Sinusitis, I sincerely HOPE he's successful in getting research dollars!

I post this as a father, with two young men with dreams, hopes and futures in Education and Civil Engineering. I have watched over Robert and Mildred Goodwin's grandsons. As they did for me, I hope and work for a future that they can contribute to positively.

 

Shout out to the students and teachers at Manor High School Smiley

 

 

For students, your futures lie not just in sports or rap music; a future in science, technology, engineering and math is not only possible: it is "what you can do for your country" (John F. Kennedy)...and for yourselves.

 

 

El reto: ¿Qué vas a celebrar? Adios...

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Water in the Stars...

...or at least found on the former planets around them.



Most stars (including, in about 4 billion years, our sun) end their lives as white dwarfs, after they have burned all their nuclear fuel. These super dense stellar embers exert such strong gravity that any element heavier than helium will immediately sink to the dwarf’s core. So imagine astronomers’ surprise when they discovered that some white dwarfs are cloaked in layers of “pollution” made up of silicon, oxygen, and other elements much higher up on the periodic table.



This pollution is made up of “pieces of planetary systems that are falling into their central stars,” explains Jay Farihi, an astronomer at the University of Cambridge in the United Kingdom. By measuring the pollution’s constituent elements, scientists can peer back in time and discover what the original solar system’s asteroids, comets, and planets were made of. “It’s a wonderful technique for doing planetary forensics,” says Michael Jura, a white dwarf expert at the University of California, Los Angeles, who wasn’t involved in the current research.



In GD 61’s pollution, Farihi and his colleagues noticed a curious abundance of oxygen. Their first thought was that the original asteroid must have been encrusted with carbon dioxide in the form of dry ice. Trouble is, there was no carbon anywhere to be found around GD 61. So in order to account for the extra oxygen, “the only chemically viable substance left is water,” Farihi says.

Science Mag: Stellar Graveyard Shows Signs of Possible (Past) Life
Warwick:
Water discovered in remnants of extrasolar rocky world orbiting white dwarf

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Call for Submissions.....

Black Books Publishing is a small press publisher of fiction and non-fiction titles geared towards African American Readers, Authors, Artists, Poets and anyone else with an interest in reading about African American culture and experiences.

 

BBP is currently seeking works of Novel and Short Story Collection submissions and book length Non-Fiction pieces.  Writers should visit www.blackbookspublishing.com for official guidelines and more details on our current needs. 

 

BBPLogo2.png

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Miguel Alcubierre Moya...

If humanity does it, it will not be the fictional Dr. Zephram Cochrane of Star Trek folklore...


Miguel Alcubierre Moya (born 1964, Mexico City) is a Mexican theoretical physicist.[1] He obtained a degree in physics, and a Master of Science in theoretical physics at the School of Science of Universidad Nacional Autónoma de México (UNAM).

At the end of 1990, Alcubierre moved to Wales to attend graduate school at the University of Wales, Cardiff, receiving his doctorate through study of numerical general relativity.[1][2][3] After 1996 he worked at the Max Planck Institute for Gravitational Physics in Potsdam, Germany, developing new numerical techniques used in the description of black holes. Since 2002, he has worked at the Nuclear Sciences Institute of the National Autonomous University of Mexico (UNAM), where he conducts research in numerical relativity, employing computers to formulate and solve the physical equations first proposed by Albert Einstein.[4] The solitary wave solutions proposed by Alcubierre for the Einsteinian field equations may possibly prove general relativity consistent with the experimentally verified non-locality of quantum mechanics. This work militates against the idea that quantum non-locality would ultimately require abandoning the mathematical structure of general relativity.

On 11 June 2012, Miguel Alcubierre was appointed Director of the Nuclear Sciences Institute at the National Autonomous University of Mexico (UNAM).

Alcubierre is best known for the proposal of "The Warp Drive: Hyper-fast travel within general relativity" which appeared in the science journal Classical and Quantum Gravity.[5] In this, he describes the Alcubierre drive, a theoretical means of traveling faster than light that does not violate the physical principle that nothing can locally travel faster than light. In this paper, he constructed a model that might transport a volume of flat space inside a "bubble" of curved space. This bubble, named as Hyper-relativistic local-dynamic space, is driven forward by a local expansion of space-time behind it, and an opposite contraction in front of it, so that theoretically a spaceship would be placed in motion by forces generated in the change made by space-time.

Wikipedia

Abstract

It is shown how, within the framework of general relativity and without the introduction of wormholes, it is possible to modify a spacetime in a way that allows a spaceship to travel with an arbitrarily large speed. By a purely local expansion of spacetime behind the spaceship and an opposite contraction in front of it, motion faster than the speed of light as seen by observers outside the disturbed region is possible. The resulting distortion is reminiscent of the "warp drive" of science fiction. However, just as it happens with wormholes, exotic matter will be needed in order to generate a distortion of spacetime like the one discussed here.

Physics arXiv: The warp drive: hyper-fast travel within general relativity
Miguel Alcubierre, Department of Physics and Astronomy
University of Wales, College of Cardiff, UK

Amazing Mexicans: Miguel Alcubierre Moya, PhD

#P4TC links:
Alcubierre Drive
As Dreams Are Made Of
Warp Fields and Research Efficacy
I'm Given Her All She's Got, Captain

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Classical and Quantum Physics...



The 2013 Nobel Prize for Chemistry has been awarded to Martin Karplus, Michael Levitt and Arieh Warshel for their development of computer models of complex chemical systems. All three researchers have close links to physics. Karplus, who is a US and Austrian citizen, originally studied physics and chemistry at Harvard University and is now based there and at the University of Strasbourg. Levitt, who has a physics degree from King's College London, is a US and UK citizen working at Stanford University, while Warshel is a US and Israeli citizen based at the University of Southern California. The trio will share the SEK 8m (£775,000) and will receive their medals at a ceremony in Stockholm on 10 December.

 


Karplus, Levitt and Warshel won the prize for developing computational techniques that use both classical and quantum physics to describe complex chemical processes. Chemical models based on classical physics are relatively easy to compute and can therefore be used to simulate some aspects of the behaviour of large molecules such as proteins. The problem, however, is that these classical models cannot describe crucial aspects of chemistry such as how reactions proceed. To do so requires models based on quantum mechanics, which in turn need huge amounts of computing power. Quantum simulations can therefore only be applied to relatively small molecules.

 

Physics World: Chemistry Nobel honors trio who combined classical and quantum physics

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Paying for Education...

Source link

As the Hispanic population grows, such students are increasingly a linchpin in state and federal plans to get more students trained in the science, technology, engineering, and math fields. But Hispanic students are also heavily underrepresented among degree recipients in those so-called STEM fields—and a new report from the Center for Urban Education provides some recommendations for changing that.


The report, "Tapping HSI-STEM Funds to Improve Latina and Latino Access to STEM Professions," argues that the Hispanic achievement gaps at the baccalaureate, master's, and doctoral levels exist in large part because of finances. "A lot of discussion about participation hasn't acknowledged that fact," said Lindsey E. Malcom, one of the co-authors and an assistant professor at the University of California at Riverside.

Hispanic students are more likely than their peers to come from low-income families—and that affects not only the competing demands on their time and money but also the types of institutions they are most likely to attend. Such students disproportionately start their college educations at community colleges and Hispanic-serving four-year colleges, which typically have lower costs. In turn, the researchers say, those institutions tend to have fewer resources, often leaving them less equipped to support students and to prepare them for graduate work.

The report recommends that colleges, particularly those with large Hispanic populations, work to better inform students of their full range of financial-aid options. It also pushes colleges to recognize that many Hispanic undergraduates are supporting themselves and are more likely to work and to put in longer hours than their peers.

The Chronicle of Higher Education:
In the STEM Fields, How Hispanic Students Pay for Their Education Affects Success
By Elyse Ashburn

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Valjeanne Jeffers is the author of five books, The Immortal series and The Switch II: Clockwork (books 1 and 2). Her work has been featured in numerous anthologies including, Genesis: An Anthology of Black Science Fiction, Mocha Faeryland and Griots: A Sword and Soul Anthology.
 
Quinton Veal is the author of three books, Her Black Body I Treasure, United Souls, and The Collected Works of Quinton Veal. His work has been featured in Genesis Science Fiction Magazine, Poetic Gumbo and I want my Poetry to. . . He has created and designed numerous covers including Immortal III and The Collected Works of Quinton Veal.
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