David Morris Lee accepts a teaching position in the Physics Department of Cornell University in Ithaca. His duties are to set up a research laboratory in low temperature physics and to teach courses in the physics department. In 1960, he is appointed Assistant Professor, in 1963, Associate Professor, in 1968, Full Professor. In 1998 he becomes James Gilbert White Distinguished Professor of the Physical Sciences and in 2007 he becomes Emeritus.

David Morris Lee enters Harvard University, where he becomes physics major. He finds the atmosphere of Harvard very enriching. Here his main extracurricular activity is the Harvard Yacht Club. After having briefly considered the possibility of a career in medicine, he continues his study in physics.

David Morris Lee is Visiting Professor at University of Florida.

Lee enters University of Connecticut. Here he learns about experimental physics. During this period Lee builds an ionization gauge control circuit for Professor Edgar Everhart's Cockcroft-Walton accelerator. He meets also John Reppy who is later to become a great colleague and friend. John does experimental research on superfluid liquid helium with Professor Charles Reynolds, who excites Lee’s interest in superfluidity and low temperature physics.

David Morris Lee enters the U.S. Army for 22 months. He serves at various posts in the continental United States during the final stages of the Korean War.

Lee and Robert C. Richardson build a cooling apparatus using it to cool helium-3 to within a few thousandths of a degree above absolute zero (−273° C). Osheroff, a student working with them, notices odd changes in the sample’s internal pressure. The team concludes that these deviations mark helium-3’s phase transition to superfluidity. The atoms in superfluid helium-3 move in a coordinated manner, therefore without resistance. Helium-3 in this state behaves according to quantum mechanical laws.

David Morris Lee is born in Rye to Marvin Lee, an electrical engineer and Annette Franks, an elementary school teacher. Lee shows since an early age attraction for science, collecting various animals he finds in the fields and near his house. Since he is six, he starts spending his summer at various children's camps in New England during which he enjoys his passion for exploring. Another childhood big passion of him is railways. As teenager he becomes interested in meteorology.

David Morris Lee receives one third of the Nobel Prize in Physics along with Douglas D. Osheroff and Robert C. Richardson "for their discovery of superfluidity in helium-3".

David Morris Lee is appointed Professor of Physics at Texas A&M University. While teaching here Lee continues his (formerly Cornell-based) research program. Among his researches are topics as magnetic resonance, spin polarized hydrogen gas, superconductivity, ultra-low temperature cryogenics, and atomic hydrogen and nitrogen stabilized by matrix isolation in helium-impurity clusters.

Lee enrols in the Ph.D. program in physics at Yale University. Here he builds a mercury jet stripper for the Heavy Ion Linear Accelerator then under construction and he meets Russell Donnelly, a Ph.D. student working on rotating superfluid helium. By helping Donnelly with his experiment, Lee learns a lot about experimental low temperature physics. Lee studies under Professor Henry A. Fairbank of the Yale low temperature group. Lee’s thesis topic involves research on liquid 3He.

David Morris Lee is Visiting Professor at Brookhaven National Laboratory.

David Morris Lee attends Rye High School. During these years he becomes a good short distance runner.

David Morris Lee is Visiting Professor at University of California.