What is the fifth state of matter?

Kainantu

Bose-Einstein condensate The first three are the familiar solid, liquid and gas, and the fourth is the gas plasma that occurs at very high temperatures. This new state, called Bose-Einstein condensate (BEC), occurs at the other end of the temperature scale, at a tiny step above absolute zero. At this temperature, under very precisely controlled conditions energy waves gradually begin to overlap and move together in unison, producing a coherent matter wave. “They march in lockstep,” said Professor Ketterle. “This is very special, having millions of atoms moving as one.”He drew an analogy with the laser, which produces directional coherent light because all the photons are moving together. More here: http://www.technologyireland.ie/archiveissue/index.tmpl?magdate=731275&sec=2&_eqSKUdatarq=20020227174429 Oct 18 04, 2:52 AM