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