April 20 Events
2010 – Deep Water Horizon Oil Rig explodes*
1940 – RCA unveils the Electron Microscope
1961 – FM stereo broadcasts are permitted +
1898 – Radium discovered by the Curies #
2010 – Deep Water Horizon Oil Rig explodes*
1940 – RCA unveils the Electron Microscope
1961 – FM stereo broadcasts are permitted +
1898 – Radium discovered by the Curies #