@fossilesque@mander.xyzM to Science Memes@mander.xyzEnglish • edit-22 months ago[Partially incorrect, see comments.] Pens in Spacemander.xyzimagemessage-square150arrow-up11.48K
arrow-up11.48Kimage[Partially incorrect, see comments.] Pens in Spacemander.xyz@fossilesque@mander.xyzM to Science Memes@mander.xyzEnglish • edit-22 months agomessage-square150
minus-squareNuraShiny [any]linkfedilinkEnglish8•2 months agoThere is no way either side used lead pencils. Saying lead is in pencils is a very outdated thing, it’s all graphite these days.
minus-square@xor@lemmy.dbzer0.comlinkfedilinkEnglish18•2 months agoit hasn’t been graphite for while now either….
minus-square@Arcka@midwest.sociallinkfedilinkEnglish5•2 months agoRegular chalk is calcium carbonate. Crayola’s website says their sidewalk chalk uses calcium sulfate (gypsum as an ingredient in plaster of paris). So they’re both calcium salts.
minus-squareAndromxda 🇺🇦🇵🇸🇹🇼linkfedilinkEnglish4•edit-22 months agoA sharp piece of graphite from a broken pencil is not something you would want in your eyes either
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There is no way either side used lead pencils. Saying lead is in pencils is a very outdated thing, it’s all graphite these days.
it hasn’t been graphite for while now either….
Chalk isn’t chalk?
Regular chalk is calcium carbonate. Crayola’s website says their sidewalk chalk uses calcium sulfate (gypsum as an ingredient in plaster of paris).
So they’re both calcium salts.
no
A sharp piece of graphite from a broken pencil is not something you would want in your eyes either