› added 9 months ago

37

TIL that the world’s quietest room is so silent that you can hear your own blood flowing and bones moving. The Anechoic Chamber at Orfield Labs in Minnesota holds the Guinness World Record for being the quietest place on earth with a background noise reading of -9.4 decibels.

Read more smithsonianmag.com

via reddit.com

m1dNo TIL that 1 liter of water is the equivalent of 1kg
DQVne TIL that inhalation and exhalation are byproducts of the diaphragm’s movement, not an active process of the lungs. The diaphragm controls airflow by contracting and relaxing.
D1k9g TIL Bon Scott of AC/DC once tried to join the Australian Army, but was rejected on the grounds of being "socially maladjusted".
epD8D TIL of the Town of Bingham Canyon, which was founded as a copper mining town in 1863, before being completely consumed by the copper mine as it grew. The Bingham Canyon Mine is now the largest man-made open pit mine in the world, and one of the deepest as well.
0wRxv TIL Natural gas has no smell. Gas companies are required to add a chemical called mercaptin as a safety precaution, so people know the smell and can identify a leak.