Physics Memes Are Getting Better (Meme Review)
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- Опубліковано 28 лип 2022
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Physics Meme Subreddit:
/ physicsmemes
Eigenchris's What is Momentum? (Joke Video)
• What Is Momentum? (jok...
And when the world needed him most, he returned
My "headcanon" explanation to weird physics in movies, tv shows etc. is that they are all stories being told to us by a non-scientist witness who didn't really understand the physics. So when the scientists in a movie talk some obvious word salad with quantum and manifold and other sciency words thrown in, with clearly no idea about what they actually mean, that is not what they would have "really" said, it is just what the non-scientist witness remembers it was like to listen to them. Or when something unphysical happens, it is because that's how the witness thought it happened, not because that is how it actually happened.
If you're a scientist who gets upset at bad science in movies, this trick might give you some peace.
that's probably how the writers and most viewers see it too so it makes sense
This is genius, I feel like it will make my life so much better
Most times they just put on some words that sound sciency, because for them science is literally magic, so they think they can treat it as such
As an Electronic and Software Engineer, you just showed me a solution that will make my life much less stressful... Thank you!
Andrew: "I don't judge movies with physics that don't make much sense very harshly."
Also Andrew: BUT QUARKS AND ELECTRONS ARE BOTH ELEMENTARY PARTICLESSSSSSSSSSSSSS
😂
Physics Memes are truly a gift to the world. Hope you're doing well Andrew!
the hell are you doing here too?
man I see your comments absolutely everywhere
@@philipschlaepfer9866 it means you are also everywhere 😂
8:30 The thing is, despite it being just a meme and dividing by zero, it kinda says a true thing. If you assume zero acceleration despite the object having nonzero net forces acting on it, then its inertia must be infinite.
(Of course what usually happens at zero acceleration is that the net force is also equal to zero and f/a is undefined)
well, x/0 is undefined even if x isn't 0. In that case it does make sense to say it's infinite tho. Also the 0/0 part makes sense in that 0/0 can be thought of to be able to be equal to any number. This also sort of happens in calculus with infinitely small steps in the x and y axes having a certain slope
Does that mean mass of an stationary (Fnet,a=0) object is indeterminate?
@@louisedebroglie7971 It means that being aware of the fact that a body with no net forces acting on it experiences zero acceleration is not enough to determine its inertial mass. Every real number for m satisfies F = m*a, provided that F = 0 and a = 0.
@@vibaj16 no its not infinite
@@khiemgom yes it is, otherwise the object would get accelerated by the force
The Oppenheimer meme is saying he named his son “the atomic bomb” because he’s the father of the atomic bomb lel
Man I’m an idiot sometimes
For many, this meme was a bit ahead of its time. As of 2023 though, everyone would get it.
True man@@95rav
"It's effective size is larger...so Nevermind" spoken like a true physicist. He knows I don't know 😂
Nice to see you finally do your first meme review. Long time coming!
You got that wrong: 1 mile is approx. 1.6 km, thus being much closer to the golden ratio.
Thanks, I was about to say something about that.
Indeed, the exact fraction es 1 mile = 25146/15625 km or 1,609344 km
The golden ratio is (1+√5)/2 ≈ 1.6180339...
The error between the two numbers is about 0.54% relative to the exact fraction. Very small indeed.
4:07 maybe Concepts of Physics by H.C. Verma
Typo on your mile to km conversion, 1 mile ~ 1.61 km, not 1.161, so yeah, the golden ratio is pretty close
Whoops thanks for the catch!
Oh my gosh, just last night I got on this subreddit for the first time in forever and thought 'Man Andrew hasn't done one of these in a while, oh well' and then I wake up to this, crazy
3:13 Dude I felt that so much. I'm currently in crunch time for my thesis (just taking a short break) and if I don't have an acceptable draft, I have to wait another 5 months to graduate. The exact same thing happened last semester and I'm losing my mind.
It's good that when physics memes are getting better, I'm getting better at physics.
This is exactly how i would have expected a scientist to read memes
9:25 He is using the right hand, it is obvious that the video is settled in a mirror world as you can see by the direction in which his decaying fingers are emiting electrons
12:05 “alright are you ready to xi what I can do here”
Holy shit this pun is amazing
Andrew no wayy you have the best timing I've been binging all your first meme reviews this whole week! :) starting first year of physics undergrad this fall at reed btw..dj griffiths
CSB: There was a minor rebellion in my High School Physics class when one of us pointed out that we should be reversing the conventions and using the Left Hand Rule since 90% of people use their right hand to write.
Won't happen when every Physics professor loves seeing students put their pencils down at around the same time to use the right hand rule.
The fact that we can use the right hand rule while holding a pencil is the one and only convenience society has bestowed upon lefties, you can't take that from us
lololol
left hand rule or right hand rule I really don't care all that much, I will just derive the the cross product quantities I need from using the wedge product
Fleming was left-handed confirmed.
Or, given that he also came up with the left-hand rule, it's probably just a case of an engineer needing his hands to keep track of signs.
my studies got worse when you stopped making these, it's time for a comeback babyyyyyy
3:17 cosmic rays with computers likely. Cosmic rays disrupt computers by moving electrons around.
memes with andrew >>>>>>>> studying for my PhD prelims next month
Great to see you again, Andrew!
Griffiths has its merits but I think it simplifies derivations a bit that a more rigorous book can help explain how he got there. I have Electromagnetic Fields by Roald Wangsness because it was used in my undergrad and resorted to Griffiths while self studying it because it is so dense but at least the complexity between the examples and exercises are more equal. Griffiths has massive leaps in complexity from the examples to the exercises.
"Griffiths has massive leaps in complexity from the examples to the exercises."
*Slaps desk with both hands*
THANK YOU!
"you can approximately convert miles to kilometers with the Fibonacci series"
For those days when you just feel like approximating something linear with something non-linear
There is a book known as Concepts of Physics written by H.C Verma which is used by High School students all across India. I can confidently say that that book is more critically acclaimed and more people sleep with it atleast in India because it is the first real Physics book we read and it is extremely good.
Obviously he was talking about grad level books
@@parthbhardwaj1807 Griffiths isn’t graduate level and that’s the book he referenced
@@Mikebigmike94 you guys reading Griffiths in school?
@@parthbhardwaj1807 🤣🤣
@@parthbhardwaj1807 Griffiths is undergraduate level not graduate, I think there’s been some confusion here
Bro been waiting for this for so Long
A professor from my uni created a little Java application called "FeynGame" where you can draw Feynman diagrams and export them. It can also check if they are correct and calculate the amplitude which I think is pretty cool
Wow cool! How can I get it?
@@abeliever6022 It should be pretty easy finding it by just googling the name. The prof who created it is called "Robert Harlander"
@@ery5757 ok thank you!
Missed these very much
I definitely agree about Jackson not being that bad. Sure, there are sections that seemingly are just there to show off his competency with Hankel functions. But those are clearly separated and can be skipped. His treatment of Green's functions for the wave operator is some of my presentations in physics pedagogy
1:25 “oh you know exactly what time it is” the Framed voice???? This was an amazing little reference
heyy boiiiiss
youtube really fucks up big time, deleting comments about book recommendations for EM and leaving the sex bots alone... good thing I got the recommendation before it was deleted. what a joke
The way he reacts at 7:20 has me dying 😂 Bro instantly (and painfully) knows how true it is 💀
Me, a Greek, being able to write the "ξ" symbol without trying:
Unlimited Power
BASED PFP
ooh, back with the memes. lets gooo
The muttering close to the mic while staring into the camera in your videos lately is the best new meme.
(IE "Japanese Netflix" "He says while plugging his sponsor")
3:17 I think it refers to the photoelectric effect where electrons on absorbing Photons get excited.
4:22 As a physics student I really loved electrodynamics by Griffith if it included more example problems instead of giving questions and answers on back
Yeah my problem with the book was that the majority of the example problems were trivial and then the exercises were really annoying
I have ptsd from that textbook because my lecturer's idea of 'teaching' was literally just reading the book to us like a bedtime story for 3 hours a week
@@christina_890
yeah and reading that book without doing all the text derivations yourself is literally useless
@@ModuliOfRiemannSurfaces That's my main problem with it as well.
@@AlbinoJedi
To be clear with my comment, any reasonably advanced textbook the student should be checking all the derivations, but griffiths is a very basic book and hence should have some more nontrivial examples worked out in detail
12:04 'Are you ready to Xi what i can do here?'
Yes, but i wasnt ready for that detail.
To be fair to the e=pi memes: When studying for one of my last exams by doing old exams I actually came across an one where e=pi should be assumed... however, for some reason unknown to man, no calculators were allowed so theres that
3:16
That's a photon. The electron's weakness is a photon. In quantum physics, an electron in a transition metal is able to absorb a photon and climb to an electron shell that is higher than it's current shell. It does so by absorbing the photon, thereby gaining a greater energy level.
I hope I explained it well. If not feel free to research and correct me.
Oh, I must be dumb. I was thinking that it meant a photon is emitted as a result of an electron decreasing in energy level. So a photon being emitted would be it’s weakness, meaning the electron now holds less energy.
@@JacobMDittman I think that also holds true. If an electron is at a high energy level, it can release a photon to decrease it's energy, thereby moving to a lower energy level.
It's basically the same process but in reverse, where a photon is released instead of absorbed.
... but why is that its weakness?
@@albertrichard3659 yeah it doesnt make sense. Is the joke here just electrons get shot from photons or something? or is it bad for electrons to go higher shells?
Woah Andrew I was working on my research today when I saw “A. Dotson” listed as one of the authors on a paper I was reading on SIDIS kinematics… I needed the calculation for delta k_T and didn’t expect this
Oh that’s cool! Yup, my one and only so far😂 but 2 on the way! What is your research in?
@@AndrewDotsonvideos I’m an undergrad and I’ve just started but my group studies data from clas12 at JLab, working on understanding the 3D structure of protons. I personally have been working on using this relatively new tool called affinity - it was created to estimate the proximity of kinematic bins to different hadron production regions (like current, target, and central regions, as well as TMD and collinear). Specifically I’ve been calculating kinematics using clas12 dihadron events (pi+pi- end states) and making affinity calculations with this. Since one of the region indicators necessary for the affinity calculation requires delta k_T, I had to look around for what delta k_T actually was and found your paper in the references!
@@AndrewDotsonvideos woah dude that is awesome, i cant wait to get to the point where i can publish papers :D
woooo let's gooo! another dotson video!! Andrew will you consider making a series teaching us graduate level quantum mechanics??
That would be fun but not any time soon. I have to spend some time learning effective field theory for research, I’ll probably do some stuff on that first
@@AndrewDotsonvideos oh nice!
13:00 yes we'd love more frequent meme reviews!
3:16 The electron meme explanation: Its a concept of photoelectric effect of electrons, when photons are bombarded on a metal or atom the electrons in the atom absorbs energy and gets ejected out of the electron. Therefore it is their weakness.
Physics- probably not, - but my books I sleep with are:
-Aerodynamics by John Anderson Jr.
-Composites by esp
-Low Speed Windtunnel Testing by Rae and Pope
-Flight controls and Dynamics by Roskam vol 1 &2
-Aerospace Design by Raymer
Absolute evil book is - Aerostructures by Bruhn
i was trying to skip the nord ad using the fast-forward key and then i just hear *japanese netflix* really loud and couldnt stop myself from laughing
I think the memes are getting better because I can understand them more as time goes on
8:09 I am not looking up the experimental data here. But I am fairly confident the em-scattering crosssection for electrons is larger then that of quarks for any scattering energy. If I remember correctly the scattering crosssection for quarks only gets large at resonance. There is no continuum like for electrons where the scattering cross section is large for low energies, small in the MeV range and then rises again. But I could be mixing this up with energy deposition.
You can solve it analytically for a simple step potential. That however allows us to solve for transmission in general potentials you can think each point of the potential is constant for a short distance.
My boy finally remembered his password.
For their respective topics, Griffiths sure... Then there's the Reif for statistical and thermal physics, and one of my favorites, the Strogatz for nonlinear dynamics and chaos. Honorable mention to the Greenberg for mathematics!
Golden ratio 1.618; Mile ratio 1.609; joker 🃏 ratio 🤡 1.1610 at 6:07
6:00 exactly what i was thinking. The km to miles text has a typo.
Sheldon Cooper ? That’s Oppenheimer, the actual father of the atomic bomb, that’s the whole point.
Ahhh man this time it was short
You should do this often 😁
Fantastic video Andrew
at 06:05 theres a typo with you miles to km conversion. 1 miles are 1.609km and not 1.16...
Halliday Resnick Walker physics book. It might be the one up top but that might be Jearl Walker or Halliday Resnick Krane. Anything I just mentioned is loved.
dude this is the funniest shit ever. I love your little side thoughts. Like the size of the electron.
He's back! The absolute madlad :D
The meme guy was using his right hand, but the front phone camera was used.
The Selfie Universe is based on the Left Hand Rule.
The circuit one got me gigglin
I don't want to protect my data if they are going to refer Feynman to me...
I've been here long enough to be able to say that your epsilon has indeed improved significantly.😂
This was the best add I've seen for nord vpn
3:30 The meme meant to say that the electron tried hard to stick to his metal atom bro but their weakness is that photons will excite them and made them leaving their bros
but how can i protect myself from nordvpn ads
4:02 Griffith's E&M is absolutely the best !!!
Great video Andrew 👍
3:30 - I think that's a reference to the photoelectric effect?
Probably
yea thats what I thought too, especially cause there is a star in the background so it's photons?
9:28 in biology we have a mnemonic rule for remembering a structural formula of D and L glucose. Basically, if you say that a fingertip is an OH, then right hand middle finger gesture is D-glucose, and left hand is L-glucose. Makes it easier to remember: L is in Left, and D is WASD move right key
9:19 That is the Right Hand Rule. The video is flipped since he used his front-facing camera. Look at the words on his sweatshirt
I think you have a typo in your miles to kilometers conversion at 6:03, but I get what you mean. In all of my years of school, I never knew this.
Yes, he did. I believe he transposed the 1 and 6.
3:30 That meme about weaknesses is about the radiation.
9:29 looks like it is in selfie mode, so there is a mirror reflection. He's probably using his right hand and forgot...
The frequency domain one made me laugh a lot more than it should have
Lol at 7:53 Andrew had a flashback to the more stars in the galaxy than atoms in the universe one
I think there's a mistake at 6:05 on the top right corner caption about the conversion rate, 1 mile is approximately 1.61km.
Return of the king
what mic do you use? love your videos btw :)
0:20 lol when the physics phd student doesn't know that browser fingerprinting is a thing
5:33 The alfa decay theory by Gamow uses tunnel effect.
E.Purcell has a great EM book.
Griffiths himself acknowledged him at the beginning of his book.
Well, when we used it 36 years ago, it was simping hard for cgs, so much so that it used 'beta/sqrt(mu_0 eps_0)' instead of 'v' to demonstrate how SI made formulas more complicated. A cursory glance at the introduction to the 3rd edition says it now uses SI, so perhaps it no longer (in the immortal words of a classmate) sucks big slabs of asphalt.
Griffiths was a student of EM Purcell
6:33 ok but in stranger things when they had the rope hang between the portal it made no sense. When they climb in it it should pull down, or else when they are halfway through the barrier it should get stuck. Tbf that universe has telekinesis, but I still have no idea how the rope physics works there.
I think Gravitation, while less widely used than Griffith's E&M, is more highly acclaimed.
Who is the author of that book? I would love to give it a look 0.0
@@astrodanslab Misner, Thorne, and Wheeler. It's honestly more of a reference text than something you sit down and read.
@@loganfisher3138 MTW!!
FLP are the most acclaimed
Fun fact:In physics you usually deals with symmetry
Joke about electron's weakneas (from what I gather) is that gamma waves ionise electrons via absorption
Your ξ looks amazing. Mine is always a few zigzag lines (my autocorrect corrected the ξ to a η, and we will never know why)
Dr. Dotson meme reviews enlighten my soul
Physicists in the Marvel Universe: Matter can neither be created nor destroyed. Fundamental law of thermodynamics.
Thanos: *snaps his fingers..*
Physicists: Oh for f***'s sake..
6:07 1 mile is definitely not ~1.16km. More like 1.6. Awfully close to the golden ratio.
YES MEME REVIEW !!!!
I don’t see any comments but the electron weakness meme was I think referencing the photoelectric effect
4:00 I don't know these books either. I guess I'm out of this for too long. Is the last one Jackson's book? I only have the 80s edition. Yeah, do the problems in that book.
9:27 left hand rule is used for determining force on an electron (negative charge) by a magnetic field. Use right for positively charges. Use left for negatively charged. Useful for particle accelerators.
11:25 it looks like that only from a specific angle. Kind of like a rainbow ;)
Issue with Jackson is that a lot of universities separate physics and maths majors, so a lot of students don't really have the mathematical skills needed for Jackson - so it's a bit of a hazing
You know why they're getting better and better as time passes by?
Acceleration
Just found this guy on and I had to subscribe-immediately.
Meanwhile me watching this and laughing while solving my quadratic equations worksheet :