Even very slight environmental noise, such as microscopic vibrations or magnetic field fluctuations a hundred times smaller ...

The line about how in space, no one can hear you scream. Is it actually true? There aren't traditional sound waves—vibrations in a medium like air—in a vacuum, so screaming is probably a waste of ...

In this video I show you how a vibration speaker works to amplify sound. And then I put it in my vacuum chamber to finalize the idea that sound cannot propagate in a vacuum.