Eli5: How does sound pass through closed doors or through fabric? For example under a blanket?
In: Physics
Sound is molecules of air vibrating. Those molecules hitting the door make the door vibrate which in turn makes the air vibrate other side, producing the same sound but muffled because the door material is not good enough to reproduce the exact same sound.
Fabric has gigantic holes compared to the molecules of air (you can easily verify this by getting a blanket between your hand and your mouth and blowing) so they have very limited effect on the path of sound.
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