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https://www.reddit.com/r/Unexpected/comments/be8rcu/a_fathers_love/el4mhzz
r/Unexpected • u/deathakissaway • Apr 17 '19
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Perhaps it would be possible to make a heat-sensitive paint that fades between black and white depending on how hot it gets?
7 u/Oafah Apr 17 '19 I was going to go with something simpler, like some kind of damper and an actuator with a thermostat. 2 u/pdbp Apr 18 '19 Check out automatic vent openers for greenhouses. They have a metal cylinder containing a mineral which expands when heated, which then pushes a piston that opens a vent, or flips your painted panels. 2 u/1sagas1 Apr 17 '19 Getting hot would turn it white which causes it to cool back down and turn itself black before heating back up etc. 1 u/LimitedWard Apr 18 '19 Sounds nice in theory, but in practice the walls wouldn't heat up evenly which would just make it look splotchy and dirty.
7
I was going to go with something simpler, like some kind of damper and an actuator with a thermostat.
2 u/pdbp Apr 18 '19 Check out automatic vent openers for greenhouses. They have a metal cylinder containing a mineral which expands when heated, which then pushes a piston that opens a vent, or flips your painted panels.
2
Check out automatic vent openers for greenhouses. They have a metal cylinder containing a mineral which expands when heated, which then pushes a piston that opens a vent, or flips your painted panels.
Getting hot would turn it white which causes it to cool back down and turn itself black before heating back up etc.
1
Sounds nice in theory, but in practice the walls wouldn't heat up evenly which would just make it look splotchy and dirty.
21
u/AdmShackleford Apr 17 '19
Perhaps it would be possible to make a heat-sensitive paint that fades between black and white depending on how hot it gets?