A loosely moderated place to ask open-ended questions
Search asklemmy π
If your post meets the following criteria, it's welcome here!
Looking for support?
Looking for a community?
~Icon~ ~by~ ~@Double_A@discuss.tchncs.de~
These are all word for word the same answers to the not poop for 3 days quest.
It occurs to me that you could get some really high-speed cooling with liquid nitrogen (or dry ice and alcohol) but the reality of working with cryogenic fluids is that they're pretty dangerous so I don't think anyone would do that. Unlike a microwave where the dangerous part (the waves) is all self-contained and turns off the instant you open the door.
I present the Macro Wave!
Cold doesn't exist, it is merely the absence of heat. Easier to insert heat than remove it, same reason why you can put on warmer clothes in the winter, but you can't make yourself cold in the summer.
Yeah there are those machines that like instantly cool your soda can or make ice cream instantly supposedly. They just bathe it in ice and salt water for some time basically
Fridge, well. But now I'm wondering if that would be possible with electromagnetic radiation somehow. Would it be possible to direct infrared waves away from a closed chamber, making the inside cooler? Like a semipermeable membrane in shoes with water vapor?
I donβt know if itβs a stupid question or not but I have been wondering this myself for years. :)
Removing heat energy is what your freezer does, by transferring it outside of the freezer box.
You canβt just remove heat by adding electromagnetic energy. Absorbing energy from the electromagnetic radiation makes heat.
Edit: whelp, TIL
The magnetocaloric effect can do this. Instead of the target absorbing energy, the magnet does. The magnet heats up and the target cools.