Latest Mark G. Raizen Stories

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...

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...

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
  • A landsman who is making his first voyage at sea; a novice who enters naval service from rural life.
According to the OED, a grass-comber is also 'a sailor's term for one who has been a farm-labourer.'