David M. Lee
Facts
Photo from the Nobel Foundation archive.
David M. Lee
Nobel Prize in Physics 1996
Born: 20 January 1931, Rye, NY, USA
Affiliation at the time of the award: Cornell University, Ithaca, NY, USA
Prize motivation: “for their discovery of superfluidity in helium-3”
Prize share: 1/3
Work
When certain substances are cooled to extremely low temperatures, they become superfluid, flowing without any friction. This applies to helium-4, the most common form of helium, but for a long time the superfluidity of helium-3 was in dispute. The different types of helium are described by different quantum mechanical rules and equations under which helium-4 has a whole-number spin while helium-3 has a half-number spin. In 1972 David Lee, Douglas Osheroff, and Robert Richardson verified that helium-3 also becomes superfluid at extremely low temperatures.
Nobel Prizes and laureates
Six prizes were awarded for achievements that have conferred the greatest benefit to humankind. The 12 laureates' work and discoveries range from proteins' structures and machine learning to fighting for a world free of nuclear weapons.
See them all presented here.
