Science Memes

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A place for majestic STEMLORD peacocking, as well as memes about the realities of working in a lab.

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oops (lemmynsfw.com)

submitted 6 days ago by [email protected] to c/[email protected]

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[–] [email protected] 2 points 6 days ago (2 children)

Well, rocks in toothpaste would be very bad because they'd be harder than your teeth.

[–] [email protected] 4 points 6 days ago (1 children)

Harder? No. Enamel is harder than steel. It is more brittle though so don't go chewing rocks.

[–] [email protected] 2 points 6 days ago* (last edited 6 days ago)

Tooth enamel is ~5 on mohs scale. Quartz, the most common kinda rock (afaik), is ~7. You're correct that enamel is harder than steel though, since it's ~4? Disclaimer: all of these numbers are from a quick google search.

Fun fact, this is why we know ancient people used to make bread - the way they separated wheat from the chuff included dropping it on the ground, which led to sand being in the bread and consequently destroying their teeth over a lifetime of eating it.

[–] [email protected] 1 points 6 days ago

Tiny bits of rock and shells is how ancient people kept their teeth clean, that and not consuming sugar every minute