JF Ptak Science Books Quick Post
I had never seen this video/film before last night--it is pretty solid, and interesting, and I'm a little surprised because for a general-public sort of production it makes some good-sized presumptions of its audience in relation to any physics background. Most of all though there are appearances of Albert Einstein (at 52:15 and 1:01:14), Otto Frisch (1:03:00) and J.D. Cockcroft (1:17:50).
Source: U.S. National Archives https://research.archives.gov/description/88106