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moistclump ,

Can some eli5 subsonic and supersonic?

oce OP ,
@oce@jlai.lu avatar

Slower than sound speed, faster than sound speed.

moistclump ,

Gun powder is slower than sound speed?

oce OP ,
@oce@jlai.lu avatar

The combustion of gun powder is slower than sound speed, it doesn’t mean the bullet cannot be though.

thedirtyknapkin ,

loose gunpowder* but yes, gunpowder actually burns very slowly. in fact, we have designed gunpowder to burn slower than old blackpowder from the musket days. it’s the containment and pressure that makes it work in a gun. but it’s also why it’s not uncommon to actually shoot some amount of unburned powder from many guns. a thing that was difficult to know or prove before high speed cameras.

whoisearth ,
@whoisearth@lemmy.ca avatar

And Sonic is a hedgehog

FireTower ,
@FireTower@lemmy.world avatar

If you’ve heard the term ‘high explosives’ that refers to thoses that are supersonic while ‘low explosives’ are subsonic.

Empricorn ,

Almost all firecrackers deflagrate, rather than detonate.

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