Quantcast

Latest Mark G. Raizen Stories

f9eb993189f2890c036a5fbdbea6279d1
2010-05-21 08:37:42

A century after Albert Einstein said we would never be able to observe the instantaneous velocity of tiny particles as they randomly shake and shimmy, so called Brownian motion, physicist Mark Raizen and his group have done so. "This is the first observation of the instantaneous velocity of a Brownian particle," says Raizen, the Sid W. Richardson Foundation Regents Chair and professor of physics at The University of Texas at Austin. "It's a prediction of Einstein's that has been standing...

0445bf1f5cef7df2e8a9f19a493a5009
2008-03-06 11:50:00

Scientists from the University of Texas at Austin open up new avenues of research using atomic coilguns and lasersStopping and cooling most of the atoms of the periodic table is now possible using a pair of techniques developed by physicist Mark Raizen at The University of Texas at Austin. Raizen stopped atoms by passing a supersonic beam through an "atomic coilgun" and cooled them using "single-photon cooling." The techniques are a major step forward in atomic physics and have a variety of...

ceedb26906bf0819211cb215098ffef91
2005-08-09 18:45:00

AUSTIN, Texas -- Physicists at The University of Texas at Austin have discovered a new technique for cooling atoms and molecules that will allow them to study quantum physics more effectively with a greater variety of particles. The researchers have found a way to use lasers to form walls that allow atoms and molecules to pass through in one direction, but do not allow them to return. The technique could lead to advances in atomic clocks, which are used to standardize time worldwide. Dr. Mark...


Word of the Day
toccata
  • In music, a work for a keyboard-instrument, like the pianoforte or organ, originally intended to utilize and display varieties of touch: but the term has been extended so as to include many irregular works, similar to the prelude, the fantasia, and the improvisation.
This word is Italian in origin, coming from the feminine past participle of 'toccare,' to touch.
Related