this post was submitted on 07 Jul 2024
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[–] JayDee@lemmy.ml 1 points 4 months ago

Material phase changes are like a cheat code for humanity. Reusable chemical handwarmers are also black magic. You just click a metal plate inside and all of a sudden it's a hot solid.

NightHawkInLight made a video showing how you can mix two different salts together and it'll create a packet that stays at 65 degrees for hours.

Video in question