Florida State University
Florida State University: Magnet Lab: Dilution Refrigerators
Dilution fridges owe their cooling power to the incredible element helium. This animation illustrates how dil fridges exploit the element's properties to make things very, very cold.
National High Magnetic Field Laboratory
Magnet Academy: Low Temperature Physics
Why do physicists want to study things at temperatures so cold atomic motion almost comes to a halt? And how do they create such frigid environments, anyway? Read on for the what, how and why of low temperature physics.