Since there are so many physics guys up right now.......

[wacki]

Please explain this to me.

I recently attended a seminar on laser cooling/fountain clocks.

Question #1) How do you get sodium or cesium (which are both solids at room temperature) to be a gas at 1 nano Kelvin.

Question #2) Bose-Einstein condensation, what is this super atom? Did all of the nuclei become one? I did some googling, but couldn't find a clear answer.