Time crystals could behave almost like perpetual motion machines
Why we've got the cosmological constant all wrong
Physicists propose explanation for metals behaving badly
Test of equivalence principle searches for effects of spin-gravity coupling
Laser pulses used to track motion of electrons in metals with attosecond precision
It is easy to measure electric current. But it is extremely hard to watch the individual electrons which make up this current. Electrons race through the metal with a speed of several million meters per second, ...
Jan 14, 2015
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