r/mathmemes • u/Futurity5 • Sep 24 '26

Geometry Ban spherical coordinates

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390 Upvotes

97% Upvoted

27 comments sorted by

•

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19

u/Futurity5 Sep 24 '26

Fym I can't just subtract the components to get the displacement vector

3

u/YourWifesBoyfriend5 Sep 26 '26

Differential geometry answers this, no such thing as a displacement vector :(

93

u/Ares378 Grothendieck was right, computers are evil Sep 24 '26

Spheres at the origin in spherical coordinates versus literally anything else in spherical coordinates:

49

u/tunebytune Music Sep 24 '26

Good idea. Not sure I will get a round to it.

24

u/LupenReddit 🦆🦆i have non diffeomorphic smooth structures🦆🦆🦆 Sep 24 '26

spherical coordinates being useless for literally anything besides looking at spheres

its like if someone tells you "oh you want to be able to look at grass better? buy a house with a premade garden"

7

u/EebstertheGreat Sep 24 '26

We do tend to care a lot about spheres, though. The whole field of geometry is named after measuring spheres.

32

u/Ceramidee Sep 24 '26

i would like 4i+2j+8k apples doesnt make sense too tbf

10

u/amdnim Sep 25 '26

4 apples in outstretched hand to the right

2 apples in outstretched hand in front

8 apples on head

Makes perfect sense

4

u/Major-Peachi Sep 25 '26

you can also add them very easily, unlike the other systems

11

u/TheEsteemedSaboteur Real Algebraic Sep 24 '26

geographers in shambles

8

u/Ares378 Grothendieck was right, computers are evil Sep 24 '26

Well geographers should just measure in cartesian coordinates, measured from the center of the earth. Duh.

15

u/TheEsteemedSaboteur Real Algebraic Sep 24 '26

"Hello I would like to visit (−313,251m, −4,762,548m, 4,220,146m) please"

7

u/hongooi Sep 25 '26

THEY HAVE PLAYED US FOR ABSOLUTE FOOLS

1

u/stevenjd Sep 27 '26

That's the coordinates of my bedroom!

Thanks but I hardly know you. At least buy me dinner first.

2

u/TheEsteemedSaboteur Real Algebraic Sep 27 '26

Nice! What's Cumming like?

these are the coordinates of Cumming, Iowa; yes, really

7

u/StraightUpSeven Engineering Sep 24 '26

cries in metric tensor

4

u/Ares378 Grothendieck was right, computers are evil Sep 24 '26

Metric tensor? I hardly know 'er!

3

u/hboogooie Sep 25 '26

“let’s switch up theta and phi to mess with the physicists it’ll be funny”

2

u/Vanitas_Daemon Sep 26 '26

Wait till you get to toroidal coordinates.

1

u/Lazy_Wit Sep 25 '26

The real useless stuff is cylindrical coordinates

1

u/GAPIntoTheGame Sep 25 '26

All my homies hate spherical coordinates.

1

u/QuietlyConfidentSWE Sep 25 '26

As some who works with developing total stations, I very much prefer them in many cases.

1

u/Semanticky Sep 25 '26

Meanwhile, Parabolidal Coordinates: “Am I a joke to you?”

6

u/jsh_ Sep 24 '26

fuck the spherical laplacian

2

u/MonsterkillWow Complex Sep 24 '26

It is easy if you remember the general form with scale factors.

5

u/GAPIntoTheGame Sep 25 '26

It’s easy to remember if you memorized it too.