Science Memes

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Virgin Physicists (lemmy.world)

submitted 3 days ago by [email protected] to c/[email protected]

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cross-posted from: https://lemmy.world/post/27589038

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[–] [email protected] 16 points 3 days ago (3 children)

To a mathematician, pi is 3.1415926535897932384626433832795028841971693993

To an engineer, pi is 3

The joke is basically the same, since you get resistors in certain values, and it's necessary to select the value closest to the one you need

[–] [email protected] 3 points 2 days ago

To an engineer, pi is 3

No, to an engineer pi is 22/7, 355/113 if your tolerances are really tight. 3 is pi to a theologist, because that's what the Bible uses.

[–] [email protected] 1 points 2 days ago* (last edited 2 days ago)

Maybe round it up to 4 just to be safe.......

[–] [email protected] 1 points 2 days ago* (last edited 2 days ago)

I mean, depending on your calculations and scale, you might go a little more precise with it. At a diameter of, say, 10m for a semicircular bridge arc, that's a difference of 0.7m.

(For mathematicians, the difference will be 0.00796m and then some I can't be arsed to write out, but compared to the total arc of 15.7m, that'd be a deviation of 0.05% which is basically zero anyway)