Three trillion years from now, the universe
Three trillion years from now, the universe will be observably static, the Milky Way alone, and scientists of the day likely won’t be able to “infer that the beginning involved a Big Bang”.
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kottke.org posts about physics
How to survive a black hole. If
How to survive a black hole. If you’re in a rocket ship about to fall into a black hole, you might live a bit longer if you turn on your engines. “But in general a person falling past the horizon won’t have zero velocity to begin with. Then the situation is different — in fact it’s worse. So firing the rocket for a short time can push the astronaut back on to the best-case scenario: the trajectory followed by free fall from rest.”
A pair of articles on the Large
A pair of articles on the Large Hadron Collider at CERN: A Giant Takes On Physics’ Biggest Questions and Crash Course. The LHC will hopefully provide the 1.21 gigawatts 7 trillion electron volts needed to uncover the Higgs boson, aka, The God Particle. “What we want is to reduce the world to objects that have no structure, that are points, that are as simple as we can imagine. And then build it up from there again.”
While working on a particle accelerator, Anatoli
While working on a particle accelerator, Anatoli Bugorski accidentally put his head into the proton stream. “The left half of Bugorski’s face swelled up beyond recognition, and over the next several days started peeling off, showing the path that the proton beam (moving near the speed of light) had burned through parts of his face, his bone, and the brain tissue underneath.” Some photos here. (via cyn-c)
Regarding the hypermiling business from last week,
Regarding the hypermiling business from last week, a question on Ask MetaFilter: Does a truck work extra to pull a drafting car?
A man outfitted his family minivan with
A man outfitted his family minivan with high-precision cesium clocks to demonstrate to his kids that they gained 22 nanoseconds of vacation time on their mountain camping trip than they would have at a lower altitude.
Remembering a physics conference that took place
Remembering a physics conference that took place in NYC 20 years ago about high-temperature superconductors. One session, the “Woodstock of Physics”, lasted until 3:15 in the morning; “it was like the Texas chili cook-off or the Iowa State Fair apple pie bake-off.” The conference was such a big deal at the time that physicists with conference badges were immediately ushered into a nightclub in Chelsea for free by the bouncers.
Regarding Susan Orlean’s piece on Robert Lang
Regarding Susan Orlean’s piece on Robert Lang and origami from a couple of weeks ago, the New Yorker has posted a 5-minute audio slideshow of Orlean talking about the piece.
New Scientist recently compiled a list of
New Scientist recently compiled a list of strange substances (with accompanying video): ferrofluids, non-Newtonian liquids, superfluids, and materials that get thicker when stretched. (via bb)
Does free will exist? “The conscious brain
Does free will exist? “The conscious brain was only playing catch-up to what the unconscious brain was already doing. The decision to act was an illusion, the monkey making up a story about what the tiger had already done.”
“The Mpemba effect is the observation that,
“The Mpemba effect is the observation that, in some specific circumstances, hotter water freezes faster than colder water.” I remember hearing about this on an old episode of Newton’s Apple, but I think they never really got to the bottom of it on that show, which was highly disappointing to me at the time.
David Pogue and Boing Boing have been
David Pogue and Boing Boing have been ensnared by the airplane-on-a-treadmill problem we debated here last February. The airplane still takes off. :)
Physicists at the University of Washington are
Physicists at the University of Washington are hoping to use entangled photons to send information back in time. “Here’s where it gets weird.”
Man tries to jump the mile-wide St.
Man tries to jump the mile-wide St. Lawrence River in a rocket-powered Lincoln Continental. I don’t want to spoil the result for you, but the concepts of gravity, force, and aerodynamics are fairly well established and understood, so why did anyone involved ever think that this jump was even close to possible?
Stephen Hawking is making an Imax 3D
Stephen Hawking is making an Imax 3D film about “cosmology and the meaning of existence”. The film “will be like Groundhog Day meets Star Trek”.
Jim Holt reports on a pair of
Jim Holt reports on a pair of books that argue that string theory is hurting theoretical physics. The article contains a good overview of the history and current status of the theory. For those looking to discover which book is better, Holt recommends Smolin’s The Trouble with Physics.
Nobel Prize winning physicist Gerard ‘t Hooft
Nobel Prize winning physicist Gerard ‘t Hooft on how to become a good theoretical physicist. He lists the subjects you need to learn (from languages to quantum field theory) and resources (both online and off) for learning them. A note on the ‘t in his name.
Satellites measuring the earth’s gravity from orbit
Satellites measuring the earth’s gravity from orbit detected a change in gravity from the massive earthquake that caused the tsunami in the Indian Ocean. “The gravity at the earth’s surface decreased by as much as about 0.0000015 percent, meaning that a 150-pound person would experience a weight loss of about one-25,000th of an ounce.”
This image of the participants of a 1927
This image of the participants of a 1927 conference on quantum mechanics sets the record for the most brainpower in one photograph. Schrodinger, Pauli, Heisenberg, Dirac, Compton, Bohr, Einstein, Planck, Curie, de Broglie, and Lorenz, all in one place.
Update: A Great Day in Harlem depicts several of the world’s top jazz musicians. More here. (thx, jim & greg)
On the heels of two books critical
On the heels of two books critical of string theory, a look at the string theory backlash.
Interesting tour/visualization imagining 10 dimensions. (thx, james)
Interesting tour/visualization imagining 10 dimensions. (thx, james)
Physicist Lawrence Krauss sums up his thoughts
Physicist Lawrence Krauss sums up his thoughts from a small conference he organized on the topic of gravity. “There appears to be energy of empty space that isn’t zero! This flies in the face of all conventional wisdom in theoretical particle physics. It is the most profound shift in thinking, perhaps the most profound puzzle, in the latter half of the 20th century.”
Vincent van Gogh painted turbulence quite accurately.
Vincent van Gogh painted turbulence quite accurately. Mexican scientists “have found that the Dutch artist’s works have a pattern of light and dark that closely follows the deep mathematical structure of turbulent flow”.
Spielberg’s new film…a wormhole movie based
Spielberg’s new film…a wormhole movie based on the work of Kip Thorne?
Italian scientists have created glass made out
Italian scientists have created glass made out of carbon dioxide. At high pressure, instead of forming a crystal (dry ice), the CO2 forms a clear, hard, vitreous material. More info. (Little known fact: I did research on glass in college, rubidium and cesium borosilicates mostly. Here’s a few citations on Google Scholar.)
Bill and Ted’s Excellent Adventure
I know I’m going to get mail about my five-star rating for this movie, but it cannot be helped. One summer when I was a kid, a friend and I watched Bill and Ted’s Excellent Adventure — no joke — every single day for a span of 2 months. I still know every line by heart, the timing, inflection, everything. If there were a Broadway production of this movie, I could slide effortlessly into the role of either Bill S. Preston, Esq. or Ted Theodore Logan, no rehearsal needed.
In my high school physics class my senior year, we had to do a report on something we hadn’t learned about in class — which, I discovered when I got to college, was a lot — and I did mine on time travel. I went to our small school library and read articles in Discover and Scientific American magazines about Stephen Hawking, Kip Thorne, quantum mechanics, causality, and wormholes. To illustrate the bit about wormholes, I brought in my well-worn VHS tape of Bill and Ted’s (a dub of a long-ago video rental) and showed a short clip of the phone booth travelling through space and time via wormhole. I got a B+ on my presentation. The teacher told me it was excellent but marked me down because it was “over the heads” of everyone in the class…which I thought was completely unfair. How on earth is Bill and Ted’s Excellent Adventure over anyone’s head?
Get yer Richard Feynman on at Google
Get yer Richard Feynman on at Google Video, particularly this 50-minute video of The Pleasure of Finding Things Out. A bit more Feynman at YouTube.
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