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Watching Quantum Physics With The Naked Eye
A group of researchers at Cambridge University have developed a semiconducting chip that puts electrons into a particular quantum state that causes them to emit light. This breakthrough could pave the way for a new class of devices, including quantum circuits.
Within the chip, the electrons were condensed into a quantum fluid, which were then excited to mix with photons in a state called a polariton. As the polariton fluid flowed, it reached about the width of a human hair – emitting light bright enough to see without equipment. As a result of the fluid state, electrons roamed as freely as they do within a superconductor.
When the polariton flow was excited with two laser beams, the quantum fluid began to oscillate backwards and forwards in ways predicted by quantum mechanics. The difference, however, is that these mechanics were large enough to be seen with the human eye.
Is that cool or what?
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Faye Reagan American Apparel Ad, still smitten with this whole campaign. (by Die Screaming)
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Audio: Stephen Hawking’s Best Quotes
Happy birthday Stephen Hawking! For a man with ALS disorder you have brought some unforgettable concepts and truths to the world of science and inspired those with disabilities to not see it as that, but as an advantage. You’re what I consider a genuine inspiration. In respect to the birthday of the man known best for his intelligence in our era, WiredScience has featured this wonderful set of audio consisting of some of Professor Hawking’s notable quotes:
It would be hard to find a geek who doesn’t recognize the world-famous theoretical physicist Stephen Hawking, who turns 70 today, or his equally famous voice.
Despite being stricken with the neurogenerative disease ALS at age 21, Hawking has continued to do groundbreaking work in quantum gravity, cosmology, and black hole research as well as written iconic popular science books such as A Brief History of Time.
Being forced to use a speech synthesizer — as Hawking has since 1986 due to complications from his disease — would have left hindered most peoples’ ability to communicate. But somehow the computerized voice, and the length of time it takes him to type in his thoughts, lends even more weight to Hawking’s words. Below, we have collected audio of some of his best quotes on topics such as physics, space travel, and the meaning of life, all spoken in his iconic digital voice.
If you’d like to hear more about Hawking, tune in to the live webcast of the University of Cambridge’s special symposium beginning at in honor of his birthday featuring physicists such as Hawking’s close friend Kip Thorne and Nobel laureate Saul Perlmutter at 8 a.m. EST.
“Observations indicate that the universe is expanding at an ever-increasing rate. It will expand forever, getting emptier and darker. Although the universe doesn’t have an end, it had a beginning in the Big Bang. One might ask what is before that but the answer is that there is nowhere before the Big Bang just as there is nowhere south of the South Pole.” — Stephen Hawking —Video Q&A with Time magazine in 2010
Click the source for the audible quotes..
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