Espresso in a storm (by EspressoTime)
At a public lecture in Pittsburgh in 1934, four hundred lucky students were privy to a lecture by Albert Einstein, in which the great man mathematically derived his famous mass-energy equivalence equation: E=mc2. What you see above is a photo from that lecture, and what is thought to be the only surviving photo that shows Einstein working on that derivation.
The photo was pulled from a halftone newspaper clipping by David Topper and Dwight Vincent of the University of Winnipeg, who discovered it in 2007. Sadly, everything is a bit fuzzy so you can’t really make out the famed equation itself. And even though the original article had a crisp picture of Einstein posing next to one of his blackboards, he’s next to the wrong one.
Here’s a closer look at the man and the math. If you look closely, you’ll see the mass-energy equivalence in the lower left hand corner of the blackboard on the right:
Fortunately, Topper and Vincent managed to take the blurry photo and reproduce both blackboards in their original paper. Here’s the math behind the magic, the derivation of mass-energy equivalence as presented by Albert Einstein.
In case you’re wondering why the famous equation says Δ
“Carson liked sherry with her tea, brandy with her coffee and her purse with a large flask of whiskey. Between books, when she was neither famous nor monied, she claimed she existed almost exclusively on gin, cigarettes, and desperation for weeks at a time. During her most productive years she employed a round-the-clock drinking system: she’d start the day at her typewriter with a ritual glass a beer, a way of saying it was time to work, then steadily sip sherry as she typed. If it was cold and there was no wood for the stove, she’d turn up the heat with double shots of whiskey. She concluded her workday before dinner, which she primed with a martini. Then it was off to the parties, which meant more martinis, cognac, and, oftentimes, corn whiskey. Finally, she ended the day as it began, with a bedtime beer.
“Her recuperative abilities are the stuff of legend—she would rise the following morning, shake off her hangover like so much dust, down her morning beer, and get back to work.”
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