Good News in History, April 30

129 years ago today, J. J. Thomson announced his discovery of the electron as a subatomic particle, over 1,800 times smaller than a proton (in the atomic nucleus), at a lecture at the Royal Institution in London. It put to rest a long history of experimentation seeking to determine whether or not a “cathode ray” […] The post Good News in History, April 30 appeared first on Good News Network.

Good News in History, April 30

129 years ago today, J. J. Thomson announced his discovery of the electron as a subatomic particle, over 1,800 times smaller than a proton (in the atomic nucleus), at a lecture at the Royal Institution in London. It put to rest a long history of experimentation seeking to determine whether or not a “cathode ray” […]

The post Good News in History, April 30 appeared first on Good News Network.