False-color images display the velocity distribution of the atomic cloud (left) just before the appearance of the Bose-Einstein condensate, (center) just after the appearance of the condensate and (right) after further evaporation left a sample of nearly pure condensate. The field of view of each frame is 200 x 270 micrometers, and corresponds to the distance the atoms have moved in about 1/20 of a second. The color corresponds to the number of atoms at each velocity, with red being the fewest and white being the most. Areas appearing white and light blue indicate lower velocities.

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