this post was submitted on 21 Oct 2024

424 points (98.6% liked)

HistoryPorn

4818 readers

219 users here now

`If you would like to become a mod in this community, kindly PM the mod.`

Relive the Past in Jaw-Dropping Detail!

HistoryPorn is for photographs (or, if it can be found, film) of the past, recent or distant! Give us a little snapshot of history!

Rules

Be respectful and inclusive.
No harassment, hate speech, or trolling.
Engage in constructive discussions.
Share relevant content.
Follow guidelines and moderators' instructions.
Use appropriate language and tone.
Report violations.
Foster a continuous learning environment.
No genocide or atrocity denialism.

Pictures of old artifacts and museum pieces should go to History Artifacts

Illustrations and paintings should go to History Drawings

Related Communities:

Forgotten Weapons

founded 1 year ago

MODERATORS

PugJesus@lemmy.world

PugJesus@kbin.social

424

Aftermath of a B-25 Bomber flying into the Empire State Building, 1945 (i.redd.it)

submitted 2 weeks ago by ProdigalFrog@slrpnk.net to c/historyporn@lemmy.world

75 comments fedilink hide all child comments

Another angle:

you are viewing a single comment's thread
view the rest of the comments

[–] evidences@lemmy.world 2 points 2 weeks ago* (last edited 2 weeks ago) (1 children)

I'm no mathlete but looking up the formula for kinetic energy it's K.E. = 1/2 m v^2 so I'm pretty sure velocity is going to have exponentially greater effect on kinetic energy than mass.

[–] Anticorp@lemmy.world 2 points 2 weeks ago

I guess it's because of the huge difference in weight that we see such a difference in kinetic energy from pellet guns, even though velocity has an exponential impact on the energy. A standard pellet weighs under 14 grains, and a .22 LR bullet weighs 40 grains. Thanks for sharing the formula though. I didn't realize how huge of a contribution velocity makes for kinetic energy, and I'll definitely look for a faster rifle whenever I upgrade my air rifle.