2017-07-12
[public] 155K views, 4.85K likes, dislikes audio only
Have you ever wondered if you could hear someone scream in space? In this video I check if you can hear me screaming in a vacuum chamber? I put the GoPro in the vacuum chamber and pump it down to maximum vacuum, then I scream and knock on the chamber walls to see if you can hear it from the inside. Listen to the absolute silence of a vacuum in this awesome video showing you how deathly silent a vacuum can be.
Space is not a perfect vacuum but it is very close. In interstellar space it can reach the equivalent of just a few hydrogen atoms per cubic meter on average. Even in my non-perfect vacuum chamber we can get to low enough pressures so that sound cannot travel through it (at least audible sound). Then I talk about how if you were in space you still would probably be able to hear an explosion. This is because the gasses that are expelled in an explosion or a rocket motor actually hit you an create their own medium. However the sound you hear would be more of an initial shock wave puff sound than a sound. Since sound is a repeating pattern this could not be called true sound.
Watch me scream at the top of my lungs and see if you can hear it in a vacuum!
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