› added 12 years ago

104

TIL Isaac Newton stuck a needle in his eye, placing pressure on the eyeball, to study the human eye as a lens and how it perceives color.

Read more lib.cam.ac.uk

via reddit.com

lr8K TIL: Ray Kroc (The founder of McDonald’s) and Walt Disney (The founder of Disney) both served in the same ambulance unit during World War 1.
JYQBV TIL a DC cop once gave President Grant a speeding ticket for driving his horse and buggy dangerously fast, this was prior to the invention of cars.
KOxaJ TIL the chemical reaction in glow sticks was discovered by Dr. Edwin Chandross in 1962, but he had no idea the "chemiluminescent" objects were popular at music shows until a Vice interview in 2013. "Is that so?" he said. "Maybe my granddaughter will think I'm cool now."
xVY15 TIL many Chinese medical tourists who go to South Korea for inexpensive and high quality plastic surgery have difficulty re-entering China due to their passports photos not matching their new face post op.
oB7Z7 TIL psychologist László Polgár theorized that any child could become a genius in a chosen field with early training. As an experiment, he trained his daughters in chess from age 4. All three went on to become chess prodigies, and the youngest, Judit, is considered the best female player in history.