this post was submitted on 20 Jun 2024
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Science Memes

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PSI (mander.xyz)
submitted 6 months ago by [email protected] to c/[email protected]
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[–] [email protected] 35 points 6 months ago (2 children)

I'm almost afraid to ask... How much?

[–] [email protected] 82 points 6 months ago (3 children)

The average Green Winged Macaw can generate around 400 PSI in one bite – that’s much stronger than the average human bite!

Moluccan Cockatoo: It’s bite force suprasses even that of the Macaw, weighing in at over 500 PSI.

https://www.parrotwebsite.com/which-parrot-has-the-worst-bite/

[–] [email protected] 33 points 6 months ago (1 children)

Because my brain is fundamentally incompatible with imperial measurements:

500psi is equivalent to about 35kg of weight stacked into a centimetre square (so 35bar / 3500kpa)

[–] [email protected] 14 points 6 months ago (2 children)

Bothered by the units but not the lack of factoring for size differences? https://en.m.wikipedia.org/wiki/Bite_force_quotient

It would seem the unit you want for the SI biting force quotient is the Newton per kilogram.

[–] [email protected] 5 points 6 months ago

I don't think it matters how big the thing biting you is, just how likely it is to rip bits off.

A weasel has nearly 4 times the Bite Force Quotient of a Moon Bear, but I'd take many Weasel bites before a single Moon Bear bite.

[–] [email protected] 2 points 6 months ago

It's not so much the force that is important, regardless of if it's normalized for body size, it's the pressure that does damage. psi (or Pa in SI) is the appropriate unit.

[–] [email protected] 11 points 6 months ago (2 children)

Certainly a big number

[–] [email protected] 8 points 6 months ago

As far as numbers go, it's definitely a number.

[–] [email protected] 4 points 6 months ago

I thought it had to be either a big number, or a small number. So, yeah.

[–] [email protected] 3 points 6 months ago (1 children)

How much is a human bite?

[–] [email protected] 3 points 6 months ago

162 psi. More than a cat, less than a big dog.

[–] [email protected] 12 points 6 months ago

They crack nuts with their beaks, we had to invent a tool for that job.