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On the 5th
June 1883 the first
regularly scheduled Orient Express departs Paris.
On the 5th
June 1956 Elvis Presley
introduces his new single, "Hound Dog", on The Milton Berle Show, scandalizing the audience with his
suggestive hip movements.
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The
first "pure" Bose–Einstein condensate was created by Eric Cornell,
Carl Wienan, and co-workers at JILA on 5th June 1995. They did this by cooling a
dilute vapor consisting of approximately two thousand rubidium-87 atoms to
below 170 nK using a combination of laser cooling (a technique that won its
inventors Steven Chu, Claude Cohen-Tannoudji, and William D.
Phillips the 1997 Nobel Prize in Physics) and magnetic evaporative cooling. About four months later, an
independent effort led by Wolfgang
Ketterle at MIT created a condensate made of sodium-23.
Ketterle's condensate had about a hundred times more atoms, allowing him to
obtain several important results such as the observation of quantum
mechanical interference between two different condensates. Cornell, Wieman
and Ketterle won the 2001 Nobel Prize in Physics for their achievements. A group led by
Randall Hulet at Rice University announced the creation of a condensate of lithium
atoms only one month following the JILA work. Lithium has attractive
interactions which causes the condensate to be unstable and to collapse for all
but a few atoms. Hulet and co-workers showed in a subsequent experiment that
the condensate could be stabilized by the quantum pressure from trap
confinement for up to about 1000 atoms.
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