Michio on Bose-Einstein Condensates

Bose Einstein condensate emerged in 1995 as an example of an incredibly cold fifth state of matter, a superfluid. Our universe is composed of gas, liquid, solid, and plasma, but physics predicts another form of matter that does not exist naturally.  The particles in Bose Einsteincondensate have the coldest temperature possible, 0 degrees Kelvin or absolute zero. Consequently, particles in this state display unique, even bizarre, characteristics. http://www.wisegeek.com/what-is-bose-einstein-condensate.htm