Search examples: Microsoft | 2015 | 2014/10 | 4.12 | 04/20 | 05/26/1980 | Galileo Galilei
  1. Home
  2. Events
  3. Detail of event

1st electron microscope...

event · 20 April 1940 · 84 years ago

1st electron microscope demonstrated (RCA), Philadelphia, Pennsylvania

More events on 20 Apr

© 2016 OnThisDay.net All rights reserved.
Loaded in 0.0111s.