› added 1 month ago

6

TIL that light passes through one-way mirrors equally from both directions. They only work because the observation room is kept dark and the room being observed is kept bright. The mirror would function more like a window if you turned off the lights in both rooms.

Read more wikipedia.org

via reddit.com

GY4GQ TIL of the "Gimli Glider", Air Canada Flight 143, a Canadian scheduled domestic passenger flight between Montreal and Edmonton that ran out of fuel on July 23, 1983, at an altitude of 41,000 feet, midway through the flight. Successfully landed with 0 casualties.
R7aAQ TIL the founder of Alcoholics Anonymous demanded whiskey during the last few days of his life.
pYxbN TIL about the transition state theory; developed in 1935, it has been used to calculate the standard enthalpy of activation, the standard entropy of activation, and the standard Gibbs energy of activation for all chemical reactions where the rate constant was experimentally determined.
v1vxL TIL happy cows actually do produce better milk. Higher levels of serotonin (a chemical associated with feelings of happiness), led to improved blood calcium in cows, reducing chance of disease and improving nutritional quality of the milk.
JYvwv TIL Clinically, what is often seen as "relaxation" in a scruffed [grabbing the animal by the loose skin at the back of the neck] adult cat is actually behavioral shutdown, or learned helplessness that occurs when an animal experiences a very high level of fear and stress.