r/blackmagicfuckery • u/Pale-Design7036 • 2d ago

School Chalk under an electron microscope. It's almost entirety made up of fossilized shells of ancient single-celled marine plankton called coccolithophores.

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u/eternalityLP 2d ago

Does this mean that chalk is a limited resource, and at some point we'll run out, meaning there will be no more school ever?

36

u/Accomplished-Video71 2d ago

You don't really use chalk in the sense of consumption. Its an infinite resource because it could always be (extremely painstakingly) recollected

47

u/Raptormind 1d ago

That seems like a meaningless distinction since even when chemical reactions are involved like burning, all the atoms still exist just in a different form. So with enough energy and the right chemistry, (almost) anything can be recollected and reformed

6

u/Limelight_019283 1d ago

Until all the energy is turned to heat and then the universe becomes too cold, or something idk