jan 1, 1749 - E=v2

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Emilie du Chatelet, French mathematician, physicist, aristocrat, hardworking bon vivant and companion of Voltaire dies this year at the age of 43 after giving birth to her second daughter. She superseded Isaac Newton by establishing that energy is more than mass times velocity. She described energy as velocity squared – a part of what would eventually become E (energy) = M (mass) C (speed of light) squared (the C part to be supplied by Albert Einstein in 1905).

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