CUA - Center for Ultracold Atoms Close Window

At very low temperatures, many interesting and new physical effects are found. Physicists find surprises at very low temperatures. But how low is low? To get a feeling for how cold things can be, we put some balloons in liquid nitrogen, which has a temperature of 321 Fahrenheit (or 77 Kelvin). The gas inside the balloon cools down, making the balloon shrink. In fact, we can fit many balloons inside a container suitable only for one balloon at room temperature. This gives you some idea that atoms can behave in strange and wonderful ways when very cold.

CUA Kids Day - What is Cold?

Friday, April 27, 2012
This seems to be taking awhile. You may continue waiting or click here to cancel the request.