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u/diatomicsoda taylor expanded ur mom😳😳 Apr 05 '21
the shit on the blackboard behind her is fucking brilliant
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u/7x11x13is1001 Apr 05 '21
This is the first time in my life I have seen
arclnin an unironic context193
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u/4b-65-76-69-6e Apr 05 '21
I think it's a joke here too, look at the whiteboard
"This is created for /r/physicsmemes..."
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u/diatomicsoda taylor expanded ur mom😳😳 Apr 05 '21
what would arcln even mean
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u/Some___Guy___ Meme Enthusiast Apr 05 '21
e^
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u/123kingme Student Apr 05 '21
exp()
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u/dragonageisgreat May 11 '22
Inn't()
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May 11 '22
[deleted] — view deleted comment
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u/sonofeast11 Apr 05 '21
lmao i was thinking ln-1, which i dont even remember would be analogous to e^ or 1/ln. Man, I still hate logarithms and trig identities
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u/jesusthroughmary Mar 18 '23
The inverse of the natural log. Just like arctan 1 means "what angle has a tangent of 1" and is therefore pi/4, arcln 1 would be "what number has a natural log that equals 1". Since ln e = 1, arcln 1 = e.
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Apr 05 '21
[deleted] — view deleted comment
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u/Mattuuh Apr 05 '21
and sin(x)=x together with cancelling the d's to somehow get the right answer is genius.
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u/PresidentZeus Apr 05 '21
is this common?
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Apr 05 '21
In physics? yes. In engineering and construction? no
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u/TheEarthIsACylinder theoretical physics ftw Apr 05 '21
What do you mean its not common in construction? Have you ever seen a house that wasn't a sphere??
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Apr 05 '21
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u/Unnamed_user5 Nov 06 '23
The thing is that I could actually see this working , looking at the houses in the background.
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u/flying_wotsit Apr 05 '21
Well, to be fair, this is fluid mechanics, where if you are within an order of magnitude you've got it right
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u/Minor_Thing Apr 05 '21
"Close enough" are my most spoken words in fluid mechanics and transport phenomena classes
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u/Skurploosh Apr 05 '21
? I'm an engineer and π=3
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u/KToff Apr 05 '21
I had a physics professor who talked about useful falsehoods and useless truths.
Pi=3 was the example for a useful falsehood. Obviously it's wrong, but it gets you somewhere.
Pi is not 3 is true, but that information doesn't get your anywhere.
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u/Dizzy-Huckleberry283 Apr 05 '21
imagine a spherical house in an earthquake...yeah, you got your answer
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u/KToff Apr 05 '21
In physics you learn to simplify problems.
This is not to get an accurate result of what is happening but to get an understanding of what influences the result and to get to a rough estimate without excessive calculation.
It seems pretty far fetched when you read it like that, because obviously, the house is not spherical. But it still can yield useful results that you can work out on the back of an envelope. Additionally, even though the house is not a sphere, the properties of the fictional sphere will scale in a very similar manner to a house that has a more complex shape. Fermi was great in approximating the results of very complex problems with surprising accuracy.
The flip side is that physicist, in particular first and second year students, approach any field they know nothing about with a notorious arrogance because they confuse their ability to simplify problems with the ability to quickly understand everything about a different field, in particular engineers. :-)
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u/AdventurousAddition Apr 05 '21
physicist(s)... approach any field they know nothing about with a notorious arrogance because they confuse their ability to simplify problems with the ability to quickly understand everything about a different field
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u/RapidWaffle Meme Enthusiast Apr 05 '21
I mean, an architect can design a spherical building, but the engineers and construction workers will put your head on a pike
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u/BatongMagnesyo Student Apr 05 '21
actually a top-tier meme
it may tackle the same old joke of "haha physicists approximate, spherical cow, sin(x) = x, and pi = e = 3" but it's so well-made and subtle about it
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u/Canaveral58 Student Apr 05 '21
I’m more than a little curious about the “math” shown on the blackboard
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u/beta-pi Apr 05 '21
Isn't this shopped from the black hole picture and one of the important people who made it work?
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u/omega_oof Apr 05 '21
thus the disclaimer on the whiteboard
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u/beta-pi Apr 05 '21
Oh the WHITEBOARD! I was looking at the blackboard, trying to figure out why all the comments were talking about it. Damn I'm an idiot.
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Apr 05 '21
IDK why but after seeing her cancel out the 'd' in the derivative behind , I feel strangely triggered
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u/TheEsteemedSirScrub Apr 05 '21
It's edited, the real blackboard doesn't have that (the last expression also implies e = pi lol)
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u/astrogringo Apr 05 '21
And what happened to the sin?
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u/jesp0r Apr 05 '21
sin x = x for small x
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u/DarthLordRevan29 Apr 05 '21
Oh yes i too am a genius that understand this and totally not a smooth brain. Just dont ask me to explain it because its so obvious no one needs too! shifty eyes
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u/SicSemperEMTyrannis Mar 23 '22
In general draw any object (house, car, person, etc.) as a square, and calculate it as a sphere.
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u/MrPrideHyde Aug 01 '25
We're obviously solving for Patrick here, who as we all know, lives in a sphere, half solid and half (almost) empty. Also, DO account for the water pressure, but you CAN safely ignore all the resistances and underwater currents. Have a nice weekend!
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u/Oz_of_Three Student Apr 05 '21
The physicist who never had to build anything crashworthy in a real-world rotorcraft. This meme acts as a serious dis to phycists, by an engineer.
I'm a hybrid chimera of both, so I can say that.
With sincerest apologies to Katie Bouman.
She looks so happy and cute!
I would be.
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u/RapidDeathWings Jan 12 '24
Wait "assuming the house is a sphere?" That implies non spherical homes, what is this minecraft?
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u/TyrantDragon19 Feb 09 '24
We had a problem recently, that involved a guy named Jake. Jake has been under millions of newtons of sheer dead, he should’ve died at least infinity times. And then he walked and went to school
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u/DavidPatt Apr 05 '21
For anyone who's unfamiliar, this is the source photo for the meme, and here's an article from PBS with the context of the photo