And when you say you dont,He gives you a surprised look at you and say you even didnt know this. you wasted your time last year,who was your teacher back then.
The first time in my life I'm not familiar with the course and it was awful to hear that sentence. Our prof. gave us homework and there was this one variable she didn't determine but supposed to, so we solved the problem(like every single one of us) from another equation she briefly talked about. And when we were giving the homework I asked about the question just in case, guess what she said "you were supposed to give L any value, I knew you guys would mix up the formulas, it's always the same every year. I was waiting for you guys come and ask about the question. Also we only learned one equation, why would you use the other one at all." Ugh, we freaking wrote pages and pages of information, not just a single formula, gosh I don't even wanna know what she is going to send us this week.
Relatable. I used to ask my physics teacher random ass questions at 3am, and he would answer back in like 10 minutes. Then again, my chemistry teacher was also like that. Like do y'all ever sleep? Are you okay??
Any questions? Perhaps from the people who are shy? No? No questions from the shy people? Alright. I guess everyone understands everything perfectly well.
My software professor gave us the task to write Ebay, like yeah the auction site, in 2 weeks from scratch no pairs. He followed it up with "I wasn't able to finish this last semester so I'll be finishing it this semester alongside you all"
My Astro professor is the oldest don on campus, and every time he mentions a famous scientist in class he’s like ah yes. I knew him. And we’re like Sir he died in 1837
Hello! Sorry I just wanted to ask if Astro is astronomy or astrophysics?? I plan on my major being astrophysics but I haven’t taken classes on it yet, so I was wondering if there’s any tips you might have? I know we’re strangers and it might take up your time so if you don’t want to, that’s okay :)
Mercy Sensei hi! Happy to be of help; It’s an astronomy class but we do talk astrophysics a lot. It is, quite honestly, one of the most beautiful things you’ll ever learn. I wanna preface by saying I had *so much fun*. When I started, I had no idea that within 2 months I’d study the birth of stars, and I genuinely cried when we had to study how they die - not because I didn’t get it, but because I *did*. It had the audacity to make sense. For the first time in my life, I understood exactly how we are all made of stardust, and I had cried because it was absolutely gorgeous. You’ll come across a lot of things you’ve already heard of - black holes, dark matter, quasars, E=MC^2 - but if you’re anything like me, you didn’t really think that you’d truly understand it one day. When you start on Astro, you will. You’ll also notice that if you rank majors by how much they really matter, really make an impact on society and people around you, Astro is not really high on that list (of course, it’s one of the few things that do matter in the grand scheme of things, but let’s consider it at college level first, not the scale of the universe). Don’t be disillusioned if you do suddenly find out the impracticality of Astro, because it was never supposed to be a practical matter. Astro is the human understanding of its own insignificance, desperately grasping at even a vague idea of what the cosmos truly is - we may never find out, and even if we do we would barely utilize it, but such is the nature of human curiosity that it demands we dedicate our lifetimes simply to find out how things work in this strange but beautiful little world we live in. People who study Astro are seized by this passion for simply the beauty of the universe. You’ll do best if you lean into this cosmic curiosity - appreciate those pictures of nebulae, feel your heart melt and your eyes soften and that little breath that pushes out of your lungs when you see the remnants of a supernova. It seems as though everyday we are about to tip over the edge of our own oblivion to knowledge in terms of Astro, but at least we know that we are amongst something as beautiful as the stars, and the galaxies. If you were looking for more practical advice, here’s some: all your Astro professors will also be aware of this cosmic beauty, which makes them passionate and very eccentric. They are interesting to talk to, great resources, and great friends if you get close. They’ll always need help on research projects and you can capitalize on that. If you’re worried about the material itself, I would recommend Prof. Walter Lewin - most of his lectures are here on RU-vid. They aren’t strictly astrophysics but they do get you into the same mindset and the level of understanding required. He’s also a very inspiring lecturer (canceled now, but still amazing). Your classes will seem challenging at first, but you’ll do fine once you understand the basic principles. It’s better to reason out the answer than to simply memorize facts. Lastly, quantum mechanics are just impossible. Even people who study quantum mechanics don’t understand quantum mechanics. Just memorize that shit and move on; don’t think too much about them. Good luck, mate. Feel free to ask questions, I know this was really long.
Half my lecturers have stated, after a direct question from a student, that certain sections or topics won't be asked in tests/exams (they're separate things where I'm from). Then 3/4 of the exam is made up of that stuff.
Amen. And there's this variation: professor something like the quiz next week will only be about Taylor and Laurent series. Then next week, you see three questions on the test, only one of which is about Taylor and Laurent series. True story.
My math professor last semester: "I did the exam left handed, then multiplied the time it took me by five, so you should be able to finish in an hour." I luckily finished, but most people didn't even, and there was one problem that was unsolveable as written, so he gave everyone an extra ten points as compensation. There's no way he did the exam beforehand, let alone left-handed.
@@mnot1132 What is this magic you speak of? At my uni, it is common for a prof to have a 80% fail rate on a class that's mandatory for your major and it's only offered once a year....
I just did this in a data science course. The presenter deliberately set it has hard as possible for the participants (all with PhD or PhD students) who had just learnt to do the basics. No-one finished it and 2nd half the day's presentation had to be abandoned.
Second semester math, insanely difficult proof of some geometric theorem, nobody got it right, everyone was waiting for the reference solution by the prof’s assistant. Solution papers came in, there were just two words: “Super trivial.”
I always found myself being the annoying dickhead in the class who was confident enough to shout out a question but was never smart enough for the question to be anything more than a tangential curiosity.
Also, this is one I was never able to figure out for myself. When the prof asks a question, and keeps asking for an answer, are they *really* wanting someone to shoutout with an answer or is it just a dry-joke as part of their presentation?
@@phitsf5475 it depends on the subject. In physics, i'm pretty sure they're either checking how much we studied or checking how far we are able to understand the unit. If it's say philosophy, they want 50/50 protagonism i think. Like, they throw a question and we answer, and from that answer she keeps going. I like this one better.
@@yonatanbeer3475 We have p=np where we can divide both sides by p to get p/p=n=1. Therefore, n=1 and p can be any number. However, if p is zero, n can be any number. p=np solved.
What kind of class would have to teach how to do 1 + 1? Considering they’re at the same school that teaches the quantum physics of bread I guess I can’t be surprised
Missing the classic: Course A: You will be discussing this in course B, so we'll skip over it now. Course B: As you're already familliar with this from Course A we'll skip over it.
Best quote from my chemistry professor, the HEAD of the chemistry department, on day 1 of class: "Ok so in this class we have 2 semesters of material to cover and 1 semester to do it. There's no way we can get it all, so we're just gonna try."
0:10 this hit me so hard. My professor gave us a 20 min lecture about how important Fourier series and Fourier transform is in modern communication technology and then skipped the entire chapter because and I quote "We were behind schedule" and it consisted of half the questions in the finals. The entire class barely passed and many students failed
never have i ever followed a professors instructions on note taking. One dude i had told me to do something similar to this and called me out mid class to chastise me over it. The only thing i could reply with was " i didnt pay you to tell me how to take notes, only to teach me physics" yeah sounds kewl but i got thrown out >.
You are joking, but you are right. I had a math prof in math for physicists and we literally proofed 1+1=2 for like 15 solid minutes, at other times he just skipped a whole page of his script, saying it was trivial anyway.
doesn't make memorizing formulas and equations any more enjoyable. i have passion and curiosity for the subject, but not when under pressure from tests.
@@thewhizkid3937 26 lowercase latin alphabet and 24 greek alphabet all of which can be capitalised. After that you just add subscripts. Sometimes you see subscripts identified by letter with subscript.
My high school physics teacher looked pretty depressed most of the time. He'd barely even make eye contact with you ever, even if you were just asking to go to the bathroom. He was so nice but also just so worn out looking. Was almost sad really. He was a decent teacher though and I still credit him for actually getting me to understand calculus since the actual calculus teacher wasn't doing a great job at it (as evidenced by the ~15% pass rate on the Calc AB AP exam, which was by no means mandatory).
Sean Brown man that sucks I was talking about my college professors, my calc based physics 1and 2 prof was my advisor until my last semester and she was one of if not the best professor I ever had. She was enthusiastic, easy going, and despite all the material being tough at the time she broke it down really well and always made time for student. I only went once but the night before the tests she would always stay late and have a 5 hour study session for anyone who wanted to come. Helped my make all A’s that year.
I once called my physics professor on the phone cos I couldn’t find the class he was giving the lecture in and I had already walked around the entire campus twice. He picked up the phone right away. He also put me on speaker, so everyone heard about my struggles 😂 Got a nice ovation when I finally found the class, mad lads!
Dude my math professor would assign homework that our math textbook didn't even MENTION. How was I supposed to figure it out if my teacher AND my textbook didn't mention it??? Thank goodness for Slader.
Hahaha I remember hunting down the instructor version of a textbook once and many of the “solutions” literally just said something like “this is left as a simple exercise”
@@deanblanton6804 Dude same, my high school AP Physics 1 teacher said she quit NASA because she couldn't handle the "weather" or some other bs. Like really, you quit working for NASA for such a poor excuse to get paid less than half as a highschool teacher. Get real.
the one at 1:35 is quite alright though, it is in the form of a second order homogenous linear differential equation and the way to solve it is indeed by substituting y=e^ax where a is some constant and then simplifying it into the characteristic equation which gives us the quadratic to solve
Chronyx hmmm yes yes the bisector of the photosynthesis inverting the Linear characteristic of f=ma to the Higgs field of acutely measuring the homogeneous way of differentiating a quantum egg, so easy practically learned it in kindergarten
My college was exactly like this but I had some old dude that had tenor for about 2 times my age and was retiring that semester. Lectures devolved into theory often and I made a 20 on the final and got an A. My lab was the opposite, it was so trivial that the cutoff for an A became a 99.8, I had a 99.5 and got a B-.
Prof: so ask any questions if you don't understand Student: ** asks question** Prof: actually you should know that already, we did one example three months ago in the notes, I'm not going over it again
Because, it usually is. Unless you are theoretical/experimental physicist or some physics related field (physical chemistry, astrophysics), physics that other fields use (various engineering fields) is indeed simple. The hard part is out of reach for engineers currently, and will be for quite some time. The rest, mostly basics. The problem is that some physics teachers end up making it harder than it should be as they lack proper teaching skills - physicists are not really known for their social skills. And if we are talking about physics TEACHERS (primary and secondary/high school), then yeah, it's all bare bones basic stuff that is indeed very simple. You don't even use the full power of mathematics that you learn along side the physics at that same time.
It is. Anything below university level just looks at simple, clear cut and at most two dimensional cases with idealized environments. I had a good physics teacher in school who tried his best to get as much across as possible, but you can only get so far without multidimensional calculus.
Had a maths tutor like this last year, I ask a question "This is simple maybe you shouldn't be in my class" bruh I'm the only person getting an A in your class, the "this is simple" mentality pisses me off so much
@@saml8802 everyone is making me seriously paranoid. i just got accepted by university and i'm going to be doing Physical Science as a primary subject, but the more i like these types of norms, the more scared i am getting XD
@@marcelprinsloo7692 Really don't be scared! Personally, I found physics difficult but I'm sure you are more than prepared for anything they throw at you. Most profs take it slow, especially for first-years so while it is hard, as long as you attend lectures and stay on top of your work it won't be scary! Good luck for next year you're going to kill it!!
@@marcelprinsloo7692 I agree with Sam, just go to the lectures, pay attention and try to study everyday and you will be fine, it can be hard sometimes, but never impossible, unless you are irresponsible
What do the D, A and B mean? I'm a BioTechnology student, please explain. I do know that F=ma means force applied is equal to mass of object times acceleration.
@@the_j_machine2254 If we call F the sum of the external forces, why not call it D? It's not that illegal to give a letter that is different from the name of the entity... So basically he just renamed every part of the equation. D = F, this is not pedagogical, there is no good reading for such an equation, but you can do it... :p I even guess A = m, and B = a... this is the worse haha
Me: *asks a question to the teacher* Random student: *answers the question and not the teacher* Me: is she right???! Teacher: anyways, *continues teaching*
This happend to me last semester : The professor entered the exam class and told us " this test took me 2 and a half hour to solve and the exam is 2 hours so you're just gonna have to select the questions that gives you higher marks" In the end only 3% out of 500 students passed the exam
@@Isometrix116 or its edgy humor that doesnt follow along in my specific ideas of what is funny? I was pretty sure that was the reason and no, I have no clue who those people are lol
The professor being available all the time is so accurate. I'd message my professor at 4 a.m and he'd be online and would even answer. He went to work at 7 a.m...
"Your book uses a slightly different notation" haha always I was the one when he said "we don't have to go throught this you already know it right?" I'd be like actually do you mind explaining that quickly? Usually others appreciated as well.
Well, you have a second order homogeneous differential equation 0 = y'' + k^2y and you guess the solution e^(Lx) (I am using a slightly different notation here, so y ist phi and L is lambda). By taking the second order derivative of y = e^(Lx), you get y'' = L^2 e^(Lx). Plugging this into the ODE yields 0 = L^2 e^(Lx) + k^2 e^(Lx) where you can divide by e^(Lx) as it's never 0, giving the problem 0 = L^2 + K^2. Reformulating the problem as L^2 = -K^2 yields the complex solutions L = ±Ki, where one is the complex conjugate of the other. Plugging this into the guessed solution gives the general solution y = ce^(xki) = de^(-xki) which can be reformulated as another linear combination y = c sin(kx) = d cos(kx) by using Euler's formula.
You forgot two aspects that were central to my college Physics experience. 1. A thick foreign accent, so you can't quite tell what he says. 2. Chicken scratch on the board, so you can't quite tell what he writes. SMH
Omg I have a friend that is struggling with her chem prof bc his english has an indian accent... We all live in a country where the first language is spanish :)
The one about solving ODEs is hilarious lol. They did that on my maths course every time. "I presume everyone knows how to do this? *wastes 10 mins of the lecture doing it* Okay well unfortunately I've hardly got any time now to present the new material, which is actually difficult, so I'll speed through that now in an unclear manner!"
@@SubscribersWithNoVideos-yc2nh sit in the front row. In my experience, you get called on less. I think the logic is, people who sit in the back want to be unseen and often do not engage due to the space between making communication harder, whereas with people up front it's assumed they want to be seen to let the professor to know they're there and listening. Like, Why would you waste time calling on students up front whom your 95% sure heard and understood what you said, when you should be calling on the ones who are further away to make sure they heard as well and are capable of following along and are doing so.
My current physics teacher has covid so he couldn't attend to class, he gave us his e-mail and phone number, telling us to call him (or send him a message) anytime if we had questions! My former teacher would do zoom calls at midnight sometimes if we needed some help, and they lasted around 2 to 3 hours ! I love the fact that a lot of physics teachers are willing to help us so much
The most annoying thing is, usually some guy is actually familiar with it and starts explaining it. For some reason the professor always assumes that he then represents the whole class
**Le common topic in physics and chemistry exists** Chemistry teacher:- you will study this in physics so we shall skip this here. Physics teacher: you had done this topic in chemistry so we shall skip this. Students: 😐
Professor: ”Are there any questions?” Students: Raising their hands Professor: Doesn’t even look at the students but just stare at the floor and/or the board for a few seconds Professor: ”Okay then, let’s move on.”
translation: why the fuck do they have to do that? I thought it only happened here. There must be a conspiration for all teachers to act like this. it doesn't explain itself.
The online version:- Professor: “are there any questions?” Students: writing their questions in the chat Professor: “ No questions? Great! let’s move on”
My chemistry teacher : " You'll have about 30 minutes to finish your test because I have to teach you the next lesson in the time remaining." After 5 mins: "YoU dOnE?!"
'Don't stress guys you'll be learning this kind of stuff next year' *next year* 'Well, how is it my fault that you don't understand if you didn't pay attention in class last year?'
That happened to me with binary to hexadecimal to decimal conversion. Till this day no professor nor TA ever taught us the exact formula and I graduated from computer engineering somehow. It all started from when our first prof said you'll be taught how to do it later on
My former Physics teacher: Writes an equation on the blackboard... writes another equation down which nobody knew before...gets the solution "That's the trick" he said, without explaining
OMFG!! I got a professor that literally says that!! He was home schooled so he doesn't really knows when we saw each subject on school, so when he talks about algebra or equations we need but we don't remember he says "you should have seen that in... kindergarten" and I'm like... "Wtf..."
@@cecitorres7905 I had a prof who made a relatively common mistake, can't remember it exactly but it was something like forgetting to factor out a negative while simplifying a rational function and he proceeded to berate himself for making a mistake any second-grader should catch. I'm thinking to myself... yeah, pretty sure I was still trying to work out my multiplication tables in second grade.
@@cormyat07 HAHAHAHAHA I got you! At that time I was wondering how many candies could I eat without getting sick... I mean it... I even tried and actually got sick xD 15 spicy candies was my limit
I literally had most of these. Just last week in my Thermo class, "the quiz took me 15 minutes to do but everyone did not finish in time. That means no one is understanding the subject" 🤣 I've also noticed there are some physics professors who make some lengthy analogies to the point you can not remember what the topic was and sometimes they can get really weird. One professor talking about special relativity lab went into "instead of the spaceship saying Obama, it says Osama". All of us looked at each other like what.
You forgot the part where the professor erases everything from the board before you were done writing down your notes and next thing you know it the board is completely covered with a new problem. Also no speeches to the class on turning assignments in on time. Also also the professor didn't have barely readable handwriting and wasnt terrible at drawing graphs. Also also also the professor wasn't hungover and didn't decide to just show a youtube video and then didn't waste 30 minutes "trying to fix the sound"
Prof: “yeah, just stare at the equation for a few minutes and you’ll understand” Me: Shows up for office hours after 3 days of “staring at the equation” and not understanding
I don't know about not-classical physics side of things but unless the student is questioning an axiomatic definition, teacher should include correlations in her answer even if she is unable to fully answer the question for whatever reason
What they teach : 1 + 1 = 2 What they give u homework : 2*2 = ? What they ask in exam : A glass plate of diameter 15cm is falling towards earth with speed of 5kmph, find the mass of sun.
“What’s 25x57?” - “Well, let’s start by constructing the residual algebra of the locally quasicompact Yakusama manifolds with unbounded prime number decomposition over Z. Then it’s an obvious consequence of the cohomology theorem for unitary products.”
"Well this is pretty much highschool stuff, you probably know what's going on" Sir, we don't do linear algebra and differential equations in highschool.
You do basic differential equations in AP Calculus, but for linear algebra other than the basic matrices stuff that are often introduced in Algebra 2 or preCalculus, you’re right.
MA Granin took both ap physics and calc ab and high school and matrices were never introduced. Only "found out" about them when learning dot and cross products of 3 dimensional vectors in 1st year physics
@@benschmitt7035 I wonder how that is, I did them in Alegbra 2 and then I did them again with more advanced stuff like Guass Jordan law for elimination (not sure about the name, haven't used it in a year and a half) and so many other things in PreCalculus and I used them again in 3D vectors when we covered vectors in PreCalculus but for ap physics c, I just memorized the law for cross multiplication of vectors (the teacher only told us we could do them with a matrix a few minutes before I went to the exam hall and I was used to the law I memorized so I ignored him)
Y'all have linear algebra and differential equations in high school?? In my country, even if you take the hardest math classes possible throughout high school, differential equations and linear algebra aren't even mentioned. You barely start doing anything other than basic derivatives when you're in the last year of high school (which is when you're 18-19 years old), where integrals are finally introduced. It is also in the last year that vectors in 3 dimensions are finally introduced (but no matrices or anything like that of course). Complex numbers are of course also never mentioned throughout high school. Math in my country is so slow 😢
The professor I had in electromagnetism 1 : "to solve this issue we have to use spherical harmonics and thats it " class: "what are SH ?" Professor: " you'll see that in detail in math for physics 1, next semester class:" ugh?"
I'm a math student and we also had an electromagnetism course, and we used double integrals and triple integrals which I don't understand at all at that time. We covered these topics in the course Advanced calculus the next year, so it is very unfair for us because the ones who took the electromagnetism second time have the advantage to know that topic.
