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November 21: E=mc²

Albert Einstein‘s paper revealing his famous formula for the relationship between energy and mass — energy equals mass times the velocity of light squared — was published on this date in 1905 in the journal Annalen der Physik (Annals of Physics). The paper had no footnotes or references. It was the last of four papers […]

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September 10: Simon Dubnow

Simon Dubnow, one of the founders of modern Jewish historical scholarship and a prolific memoirist and essayist about secular Jewish life and politics in Eastern Europe, was murdered at age 81 by the Nazis during the liquidation of the Riga Ghetto on this date in 1941. Dubnow was an advocate the Haskalah, or Jewish Enlightenment, […]

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March 24: Moissaye Olgin and the Frayhayt

Image: Photo restored and retouched by Yiddishkayt in Los Angeles. Moissaye Olgin, editor of the communist Yiddish daily Morgn Frayhayt (“Morning Freedom”) from its founding in 1922 until his death in 1939, was born in a Ukrainian shtetl on this date in 1878. An admired revolutionary agitator and writer in the Russian underground, he wrote […]

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