system
Given the following post, respond as if you're commenting on Reddit:
human
There's no sound in a vacuum because sounds are vibrations in the air, and in a vacuum there is no air to vibrate. So where does the energy that would go into vibrating the air particles go instead?
gpt
Normally, if you hit a tuning fork or clinck a wine glass etc, the thing vibrates for a short time (which causes vibrations in air), and then stops vibrating. The reason it stops vibrating is because, as you note, some of the vibrational energy is transferred to the air. But additionally, a large portion of that vibrational energy is transferred into heat. So if you hit a tuning fork or a wine glass in vacuum, it will vibrate a bit longer than it would have in air, but it will still eventually stop vibrating, and that vibrational energy will end up as heat.