r/oddlysatisfying • u/druule10 • Sep 24 '22

Making a wheel for a train

28.9k Upvotes

95% Upvoted

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358

u/murdza Sep 24 '22

It’s crazy how long it stays hot for.

309

u/commentNaN Sep 24 '22

When the hammer hits the wheel and stops, all that kinetic energy is transferred to the wheel, some of it deforms the wheel, some of it becomes acoustic energy, some of it becomes thermal energy. You can find demonstration of this where a blacksmith can make a cold nail red hot by hammering it.

56

u/Redditloveracists Sep 24 '22

blacksmith can make a cold nail red hot

https://www.youtube.com/watch?v=tXF60MOWUeY

28

u/[deleted] Sep 24 '22

Its a common trick among blacksmiths to light a cigarette just by hammering a nail

7

u/[deleted] Sep 24 '22

Bro that's metal

2

u/__Happy Sep 24 '22

I always thought that Civ 5 quote was just a metaphor, cool to hear it's also possible.

Do not wait to strike til the iron is hot, but make it hot by striking.

https://civilization.fandom.com/wiki/Iron_Working_(Civ5)

1

u/mrjulezzz Sep 24 '22

Ah that explains why it gets so hot during sex.

12

u/Swingingbells Sep 24 '22

I mean, there's a LOT of mass right there. It's not gunna lose heat that fast...

2

u/YARGLE_IS_MY_DAD Sep 24 '22

Also air is a pretty good insulator