Category: sound

Anechoic chambers are the quietest places on Earth and have background noises measured in negative decibels. After a few minutes in chambers, you can hear your heartbeat and blood circulating in your ears and may experience troubles with orienting yourself or even standing. (source)

Photo : Jonathan Haeber / flickr

In 2015, scientist dropped a microphone 6 miles down into the Mariana Trench, instead of quiet, they heard sounds of earthquakes, ships, the distinct moans of baleen whales and the overwhelming clamor of a category 4 typhoon that just happened to pass overhead.

In 2015, scientist dropped a microphone 6 miles down into the Mariana Trench, instead of quiet, they heard sounds of earthquakes, ships, the distinct moans of baleen whales and the overwhelming clamor of a category 4 typhoon that just happened to pass overhead.

German airplanes “Stuka” did not make that screaming sound when diving because of their engine, but because they had small fans attached to the front of their landing gear that acted as siren. This will “weaken enemy morale and enhance the intimidation of dive-bombing”.

Photo :  Deutsches Bundesarchiv / wikimedia

Car makers employ sound engineers to give car doors that satisfying ‘thunk’ when closed. 

If you could produce a sound louder than 1100 dB, you would create a black hole, and ultimately destroy the galaxy.

Photo : NASA/CXC/M.Weiss via wikimedia

If you could produce a sound louder than 1100 dB, you would create a black hole, and ultimately destroy the galaxy.

Photo : NASA/CXC/M.Weiss via wikimedia

The world’s quietest room is -9 decibels. It’s so quiet, you can hear your own organs: your heart, stomach, even the blood flowing in your veins.