#OnThisDay: Albert Einstein's paper that leads to the mass-energy equivalence formula, E = mc², was published.
Birth Anniversary of French #Writer and #Philosopher Voltaire (1694).
Thomas Edison announced his invention of the phonograph, a machine that can record and play sound (1877).
Today is World #TelevisionDay.
#OnThisDay: Albert Einstein's paper that leads to the mass-energy equivalence formula, E = mc², was published.
Birth Anniversary of French #Writer and #Philosopher Voltaire (1694).
Thomas Edison announced his invention of the phonograph, a machine that can record and play sound (1877).
Today is World #TelevisionDay.
#OnThisDay: Albert Einstein's paper that leads to the mass-energy equivalence formula, E = mc², was published.
Birth Anniversary of French #Writer and #Philosopher Voltaire (1694)
Thomas Edison announced his invention of the phonograph, a machine that can record and play sound (1877).
Today is World #TelevisionDay.
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