Hartland Snyder
Hartland Sweet Snyder (1913 – May 22, 1962) was an American physicist[1] who, together with J. Robert Oppenheimer, showed how large stars would collapse to form black holes.[2] This work modeled the gravitational collapse of a pressure-free homogeneous fluid sphere and found that it would be unable to communicate with the rest of the universe.[3] This discovery was depicted in the movie Oppenheimer, where Snyder was portrayed by actor Rory Keane.[5] Some publications Snyder authored together with Ernest Courant laid the foundations for the field of accelerator physics.[6] In particular, Snyder with Courant and Milton Stanley Livingston developed the principle of strong focusing that made modern particle accelerators possible.