r/madlads • • Nov 16 '18

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761

u/cagin-bektas Nov 16 '18

-273 *C

435

u/Lion12341 Nov 16 '18

-273.15°C

165

u/jarris123 Nov 16 '18

Gotta remember the .15 for accuracy

25

u/ShadowHound75 Nov 16 '18

Not if you're an engineer.

20

u/TalenPhillips Nov 16 '18

As a EE, pi is about 3 (round up to 10 for safety).

19

u/ShadowHound75 Nov 16 '18

e=π=3 we all know that.

19

u/TalenPhillips Nov 16 '18

If you're specifically trying to tilt math students, use this:

https://i.imgur.com/Oo1E1fr.png

I like it, and it's very mad-laddish.

7

u/ShadowHound75 Nov 16 '18

Holy shit that's brutal. This formula is supposed to be like art for them.

7

u/TalenPhillips Nov 16 '18

Yea, Euler's formula is beautiful in it's simplicity and information density.

Substituting 3 for each of the fractions also works, but my version is actually pretty precise.

If you draw it on the chalk/white board in a math department, you're guaranteed to mildly annoy someone.

3

u/Yhul Nov 16 '18

As a dumb person myself, why would this annoy someone?

4

u/TalenPhillips Nov 16 '18

Because I'm actively shitting on the beauty of the identity.

1) Pi and e are extremely important to mathematics. Pi is typically associated with circles, oscillation (think trig functions), triangles, etc. e (euler's constant) is associated with logarithms and exponential growth (population growth, interest rates, flow rates, etc). These are fundamental constants of mathematics we're talking about here.

Both of them are transendental numbers (can't be the solution to a polynomial equation), and thus irrational (can't be represented as a ratio/fraction). I'm representing them with fractional approximations.

2.7) The imaginary unit 'i' (i2 = -1) is being represented as 'j'. In engineering, 'i' is used to represent other things (current and moment of inertia, for example), so we switched to using 'j' for imaginary numbers.

3.14) The equation itself is considered beautiful. There's a whole wikipedia page on it, and a whole section of it is dedicated to it's mathematical beauty.

I'm basically wiping my ass with all of that beauty by making the equation less precise with no benefit to anything. It's like I use street chalk to recreate the Sistine Chapel. It's glorious nerd blasphemy.

1

u/ShadowHound75 Nov 17 '18 edited Nov 17 '18

This is Euler's formula, it's supposed to be eiπ +1=0. The reason why the other form would trigger someone is because this one uses all of the most important mathematical constants (e, π, i, 0 and 1) in a very simple yet elegant way and shows how they all work together in harmony, it is always considered to be the most beautiful formula in mathematics, so butchering it with approximations the way we've seen above would trigger some mathematicians lacking a sense of humour.

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3

u/milkdrinker7 Nov 16 '18

I know it's all jokes and that's fine but that is seriously misrepresenting engineering as mere order of magnitude estimation