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Tirado de Chats

09.08.09

"<Catonic_lp> What's the opposite of Christopher Reeve?
<opticron> superman
<m0j0-j0j0> Superman
<Catonic_lp> Christopher Walken"

 

 

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Sopa de Cogumelos

09.08.09

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Pan Dimensional Living Room

09.08.09

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Oh, to die like a man...

09.08.09

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Deus, faz com que isto seja verdade!

09.08.09

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Weirder Things Have Happened

09.08.09

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Eric Zener - "Splash"

09.08.09

 

Tenho uma obsessão com a inspiração deste quadro desde míudo.

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Detectar Comportamento Quântico em Objectos Macroscópicos

09.08.09

 

Kansas is not Kansas anymore Toto.


"Now, post-doc Matt LaHaye and his colleagues at the California Institute of Technology have built a miniature structure that can help them detect whether an object made of 10 billion atoms exhibits quantum properties. The specific property currently under study is a phenomenon called “quantized energy.” On the human scale, oscillating objects, like a pendulum, have a continuous energy curve, progressing from 100 percent of their possible energy to zero and back. But atoms oscillate between clear energy states—for example, an atom could have 100 percent energy or zero, but nowhere in between. They have quantized energy.

(...)

Keith Schwab, a co-author of the study, posited some years ago that if oscillating objects larger than atoms have quantized energy levels, too, one should be able to detect them by engineering the correct interaction with an atom-like system. By looking at how the energy levels of the atom change when it is coupled with an oscillating object, scientists could deduce the oscillating object’s energy levels, or quanta. At long last, Schwab, LaHaye, and colleagues, including Michael Roukes, co-director of Caltech’s Kavli Nanoscience Institute, have built a device that can do such an experiment.

On a silicon chip, they have created, side by side, a nanoscale aluminum bridge and a small loop of superconductor (a “Cooper pair box”) that acts like an artificial “atom.” This “atom” serves as a “qubit,” taking one of two states, like a quantum version of the binary bits in a computer. The bridge—made of 10 billion atoms—vibrates side to side when a current is applied, while the qubit jumps between its energy levels. Both generate electric fields, which are so close that they in turn interact with each other, allowing the movement of the bridge to telegraph the energy levels of the qubit.

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Halal

09.08.09

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