@jim you’re welcome 😁

$\operatorname{\hat H}\vert\Psi\rangle=E\vert\Psi〉$ in the streets, $i \hbar \frac{d}{d t}\vert\Psi(t)\rangle = \hat H\vert\Psi(t)〉$ in the sheets.

Depending on which profession you’re talking to, 0.001 inches is either a mil, a thou, “why aren’t you using metric?”, or uselessly fucking small.

Elizabeth boosted

This is MPAR ATD, a phased array antenna installed at The National Severe Storms Lab in Norman, OK. Each stitch is an antenna in the array, 4,864 total. Each 8x8 section outlined in black is a stand-alone panel that can be swapped out. Phased arrays are cool 🤓

Converting some pixel art from Ivan Dixon to cross stitch with the help of @edwardloveall and learning that colors are HARD pug-of-war.tumblr.com/post/170

Elizabeth boosted

@rtwx I swear, if I have to hear "Ardrino" one more time ....

@stoof so amazing!

I found the companion book for my future memoir: “Fantastic Tubes and Where to Find Them”

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i want to introduce my familiar, Friday! he acts as my emotional support animal and hes very handsome and well behaved. this is my favorite picture of him #catsofmastodon

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Salome is happily asleep on the couch. #burmeselyf #CatsOfMastodon

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Happy #Caturday
Pi is having a sleep in with me today.

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Oh no! I’m only 10 minutes into a two hour infusion and I’m already out of food 😖Send cat pics and cookies!

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Protip:

When designing a user interface, imagine some old woman using it, say Margaret Hamilton, and she's clicking your app's buttons and saying to you, as old people do,

"Young whippersnapper, when I was your age, I sent 24 people to the ACTUAL MOON with my software in 4K of RAM and here I am clicking your button and it takes ten seconds to load a 50 megabyte video ad and then it crashes

I'm not even ANGRY with you, I'm just disappointed."

Elizabeth boosted

Dance

Chladni figures for linear combinations of the (20,21) and (21,20) vibration modes of the square.

Source code and explanation: community.wolfram.com/groups/-

Elizabeth boosted

@ejk Now that I think about it, it's really a system of equations, if you wanted to graph it out, and they probably intersect on just one point:
18 ÷ x = y and
x - y = 7

So, the first is already pretty simple, y = 18 ÷ x. Let me solve the 2nd for y:
-y + x = 7
-(-y) = -(7 - x)
y = -7 + x, or y = x - 7

The only point that satisfies both equations is (9, 2). So there is just the one solution, including fractional factors!

But of course, they won't see this method till high school Geometry. :D

A Mastodon instance for maths people. The kind of people who make $\pi z^2 \times a$ jokes.
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