EuLeR iS nOT a PHySicIST : science

EuLeR iS nOT a PHySicIST (mander.xyz)

submitted 1 year ago by fossilesque@mander.xyz to c/science_memes@mander.xyz

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[–] Gustephan@lemmy.world 15 points 1 year ago (2 children)

Shout out to the euler relationship for allowing me to forget every single trig identity I ever learned

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[–] Trashbones@lemmy.sdf.org 6 points 1 year ago (1 child)

I'd be curious how that works? I always hated memorizing those things, and I'd love it if there was some way to easily derive those from a single relationship.

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[–] Gustephan@lemmy.world 14 points 1 year ago

e^(ix) = cos(x) + i sin(x)

That is the euler relationship. You can use that relationship to convert any expression with a trig function into an expression of exponentials and imaginary numbers. "Euler's formula" is a good search term if you want to learn more

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[–] DevCuber@sh.itjust.works 10 points 1 year ago (5 children)

I don't know what any of those are, but surely lagrangian mechanics was invented by Lagrange, right

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[–] RunawayFixer@lemmy.world 16 points 1 year ago*

Euler thought up or improved way too many things for them all to be named after him, it would get too confusing.

From his wiki: "Euler's work averages 800 pages a year from 1725 to 1783. He also wrote over 4500 letters and hundreds of manuscripts. It has been estimated that Leonhard Euler was the author of a quarter of the combined output in mathematics, physics, mechanics, astronomy, and navigation in the 18th century." https://en.m.wikipedia.org/wiki/Leonhard_Euler

And a relevant xkcd: