this post was submitted on 30 Oct 2024
217 points (100.0% liked)

Science Memes

233 readers
49 users here now

Welcome to c/science_memes @ Mander.xyz!

A place for majestic STEMLORD peacocking, as well as memes about the realities of working in a lab.



Rules

  1. Don't throw mud. Behave like an intellectual and remember the human.
  2. Keep it rooted (on topic).
  3. No spam.
  4. Infographics welcome, get schooled.

This is a science community. We use the Dawkins definition of meme.



Research Committee

Other Mander Communities

Science and Research

Biology and Life Sciences

Physical Sciences

Humanities and Social Sciences

Practical and Applied Sciences

Memes

Miscellaneous

founded 2 years ago
MODERATORS
 
top 33 comments
sorted by: hot top controversial new old
[–] blackbrook@mander.xyz 25 points 1 week ago (1 children)

You need to add some disclaimer to this diagram like "not to scale"...

[–] hydroptic@sopuli.xyz 32 points 1 week ago (1 children)

It's to scale.

Which scale is left as an exercise to the reader.

[–] jerkface@lemmy.ca 5 points 1 week ago (1 children)

I really don't think it is.

[–] hydroptic@sopuli.xyz 6 points 1 week ago

I may not have been entirely serious

[–] puchaczyk@lemmy.blahaj.zone 25 points 1 week ago (2 children)

This is why a length of a vector on a complex plane is |z|=√(z×z). z is a complex conjugate of z.

[–] randy@lemmy.ca 12 points 1 week ago

I've noticed that, if an equation calls for a number squared, they usually really mean a number multiplied by its complex conjugate.

[–] drbluefall@toast.ooo 5 points 1 week ago

[ you may want to escape the characters in your comment... ]

[–] ornery_chemist@mander.xyz 19 points 1 week ago (1 children)

Isn't the squaring actually multiplication by the complex conjugate when working in the complex plane? i.e., √((1 - 0 i) (1 + 0 i) + (0 - i) (0 + i)) = √(1 + - i^2^) = √(1 + 1) = √2. I could be totally off base here and could be confusing with something else...

[–] diaphanous@feddit.org 8 points 1 week ago

I think you're thinking of taking the absolute value squared, |z|^2 = z z*

[–] BorgDrone@lemmy.one 11 points 1 week ago (2 children)
[–] Rivalarrival@lemmy.today 10 points 1 week ago (1 children)

That's actually pretty easy. With CB being 0, C and B are the same point. Angle A, then, is 0, and the other two angles are undefined.

[–] crmsnbleyd@sopuli.xyz 2 points 1 week ago (1 children)

A is clearly a right angle

[–] Rivalarrival@lemmy.today 3 points 1 week ago (1 children)

A is drawn in such a way that it resembles a right angle, but it is not labeled as such. The length of the hypotenuse is given as zero. The opposite angle cannot be anything but 0°.

[–] crmsnbleyd@sopuli.xyz 3 points 1 week ago (1 children)

The pythagoras theorem only holds if A is a right triangle

[–] Rivalarrival@lemmy.today 1 points 1 week ago

What is depicted here isn't even a polygon, let alone a triangle, let alone a right triangle. This is just a line segment. Line AB is the same as line AC. There is no line BC. BC is a single point.

I suppose it could possibly depict a weird cross section of two orthogonal circles in a real and an imaginary plane.

[–] hydroptic@sopuli.xyz 3 points 1 week ago

No thank you

[–] ShinkanTrain@lemmy.ml 9 points 1 week ago
[–] produnis@discuss.tchncs.de 9 points 1 week ago

Too complexe for me ;)

[–] jerkface@lemmy.ca 8 points 1 week ago* (last edited 1 week ago) (1 children)

Doesn't this also imply that i == 1 because CB has zero length, forcing AC and AB to be coincident? That sounds like a disproving contradiction to me.

[–] xor@lemmy.blahaj.zone 5 points 1 week ago (1 children)

I think BAC is supposed to be defined as a right-angle, so that AB²+AC²=CB²

=> AB+1²=0²

=> AB = √-1

=> AB = i

[–] jerkface@lemmy.ca 2 points 1 week ago

I mean, I see that's how they would have had to get to i, but it's not a right triangle.

[–] I_am_10_squirrels 6 points 1 week ago* (last edited 1 week ago)

The length would be equal to the absolute value

[–] Boomkop3@reddthat.com 3 points 1 week ago* (last edited 1 week ago) (2 children)
[–] Rivalarrival@lemmy.today 2 points 1 week ago

Every now and then, I get a little bit lonely and you're never coming 'round

[–] hydroptic@sopuli.xyz 2 points 1 week ago (1 children)
[–] Boomkop3@reddthat.com 2 points 1 week ago (1 children)

Exactly what I thought of, but then I was like... nah that's too cheesy

[–] hydroptic@sopuli.xyz 2 points 1 week ago

Too cheesy?!

[–] Boomkop3@reddthat.com 3 points 1 week ago (1 children)
[–] Maiq@lemy.lol 3 points 1 week ago (1 children)
[–] Zoop 3 points 1 week ago

Every now and then, do ya fall apart?

[–] Stomata@buddyverse.one 2 points 1 week ago

Stop daydreaming 😁

[–] mariusafa@lemmy.sdf.org 2 points 1 week ago

What if not a Hilbert space?

[–] barsoap@lemm.ee 1 points 1 week ago

Looks like a finite state machine or some other graph to me, which just happens to have no directed edges.