Today is the birthday of J. J. Thompson, born in 1856, he is best known for his “plum pudding” model of the atom, he discovered the electron, isotopes and the mass spectrometer. 16 more words
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Today is the birthday of Johann Segner, born in 1704, he discovered the reactive force of water and constructed the first water jet, if you have a sprinkler in your yard, that is his invention, he is considered the father of the water turbine. 145 more words