IAmDavid

TheConversationUS, 8 months ago to histodons

In 1911, George de Hevesy had the sneaking suspicion that the kitchen of his boarding house cafeteria was reusing leftovers in their soup.

So he came up with a plan and sneakily sprinkled a small amount of radioactive material in his leftover meat. A few days later, he measured the radioactivity in the prepared food – catching his landlady red-handed. It was the first successful radioactive tracer experiment.
https://theconversation.com/how-a-disgruntled-scientist-looking-to-prove-his-food-wasnt-fresh-discovered-radioactive-tracers-and-won-a-nobel-prize-80-years-ago-214784
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