Physics Definition and 987 Threads

Hi, I was going through “Fundamental University Physics” by Alonso and Finn, and I’m wondering how much of it is out of date. Obviously the tone and style is from the 60s, but if I were to go through all 3 volumes in depth, how much of the info would be inaccurate/wrong based on what we know...

Forgive me for my bad explaining. What are all the usual sites/tools/etc. that physicists and physics students use? For example--arXiv, LaTeX, the best journals to keep up with the latest physics research/discoveries, the Feynman Lectures (and Feynman himself), Griffiths Electrodynamics, CERN...

As an undergraduate highly considering graduate school, what are some ways I can still remain engaged with physics and with my institution's physics department despite my delayed start (I cannot take intro physics until my second year)? I was thinking of regularly attending department colloquia...

Hey! I'm Parker, an undergraduate physics student with hopes of going to graduate school. I'm excited to learn as much as possible and to interact with people just as passionate about physics as I am :)

I might have some other questions related to this topic, but I will ask them in further replies. Isotropy of space is explained such as it should look the same in every direction. It's not enough to imagine ourselves to be in the center of the sphere, because definition says that to call space...

I would like to subscribe to a general science periodical (emphasis on physics would not go amiss) other than Scientific American that would explain new scientific discoveries and ideas in popular terms. A hard copy magazine best but digital okay too. Please, no defense of Scientific American...

Hello everyone . Recently i have been thinking about the importance of math in physics . There are many times that i read books or papers that contain tons of hard math and yet i feel it doesn't really add that much to my understanding . On the other hand there are sources that provide a very...

Would a professor in a linear algebra, another upper-level math course, or an upper-level physics course take off points if I don't show steps when factoring an equation expression?

I like creating physics and chemistry problems and i want some feedback on them. What is the most appropriate forum to post them and ask for oppinions?

Hey Everyone, I'm a recently new bachelor student in Physics. I'm around my 20's. I'm from switzerland.

What can AI do, and not do, in physics currently? Can it navigate hilbert space (I don't know what this is, just coming from an HPS undergrad background)? Can it design atomic bombs? Has it solved any problems? I suppose much research uses AI. In what forms?

I learned some computer science basics from the book SICP ( Structure and Interpretation of Computer Programs, Authors: Gerald Jay Sussman, Hal Abelson, Julie Sussman ) and I've witnessed a book about mechanics from the same author called Structure and Interpretation of Classical Mechanics...

I learned physics( MSc) & my academic orientation was elementary particles and QFT . My thesis is about quasiparticle interaction from the quantum field theory point of view. I like QFT, basic particles, quasiparticles, accelerators, plasma and superconductivity.

I have program that i want to follow to try to self learn undergrad physics deeply but i find myself hating when i have to check the solution of a problem set but at the same time if i didn't do that i wouldnt have the time to do other problem sets. So i want to know how much it takes you guys...

Please can anyone help me with problem? I don't know if the work is 0 J

I am a retired associate professor from an engineering college. I am a fan of physics. I have published many papers in scientific journals and mathematical journals. I am very happy to join this forum.

I don't have much to say, at the time I had to drop out of university but I've always been passionate about science and I can't stop reading and thinking about it, especially physics and mathematics.Welcome everybody.

$$ f=\frac{cs}{2\pi}\cdot\sqrt{\frac{A}{VL}} $$

I'm in my last 2 years of high school, and I have to pick a speciality to study before becoming an undergraduate and studying in college. In the future, I'm hoping to become an experimental physicist. My high school offers 3 specialities that are relevant to physics to pick from, all of them...

Here is question + drawing.

Hi, I’m a student studying physics that’s trying to learn more niche information for the purposes of my senior thesis that I have to begin to plan.

So, first of all, why and how are we taking the derivative of the vector r or s as d/dt if t is not a parameter of the equations? Second question is what is the difference between d/dt(r) and d(theta)/dt(r) and also between d/dt(s) and d(theta)/dt(s)? Like, both of these appear at the bottom of...

I approach this by considering the four springs in parallel each with spring constant ##k## as one spring with four times the spring constant ##k' = 4k##. The car is dropped and at the moment its tyres touch the ground I assume that the spring is in its resting position. As the car continues to...

Recently I started making physics problems and I made one that I really like, but I would like some feedback from other people (how difficult it is, how enjoyable it is to solve this problem, what I could improve about it, etc). Here is the problem: A cannon is fixed at height H relative to the...

We all know the four fundamental forces in physics: gravity, electromagnetism, and the strong and weak nuclear forces; and there is now some discussion about a fifth, more obscure force involving muons. But I have a question; could the fifth force be something we deal with every day? Could it...

I will update soon..

Hi folks, 50 odd years ago I did a physics degree - wonder if anything interesting has happened since. Logged in a while ago, but seems lost. Worked in signal processing, still do the odd wee research contract. Nothing right now, thought I would have a look in here.

Jiangman underground observatory (JUNO) is a setup at china which is used for detection of neutrino and their oscillation so far as I know. What is the basic goal of making this setup, Are they interested to observe the effect of neutrino on earth i.e neutrino may rise the temp of earth or some...

I set about trying to use HiPER Calc Pro on my phone to solve the integral for the Bessel function of the first kind and of order one, so that I could get the ordinate value for the first root of the function to 99 significant figures, then divide that by π to 99 significant figures, in order to...

I'm here to chat about physics and its implecations, discuss research, and ask question bothering me.

Hi, I'm a physics college student! Trying to wade through work (even through the summer) and figure out my life and career plans.

Hi, I'm an undergraduate student in the US going into their 3rd year (of 4), and I can start to feel the weight of deciding what to do after my undergraduate studies. I'll break down the concerns into 2 main questions, and any advice is greatly appreciated! For context, I am on track to finish...

Greetings, This is a slightly longer post but it's coming from someone who's humbly and sincerely passionate+motivated about pursuing Physics and hence I'd be immensely grateful to everyone who can help me clear my confusions and see a ray of light and hope! You'd be doing me a solid :) My...

I'm starting a college course in a month and I'll be studying the following A-levels: chemistry, maths, biology and psychology. When I applied for my course I was under the impression that A-level physics would be a part of it, but I found out during my interview that it is not. My issue is...

I'm currently in high school ,and am a science student. I find physics Interesting I hope to learn more from this amazing physics community. Wish me luck for the future!! 👨‍🔬

I studied physics in Aachen and Cologne Germany. But I am working mainly in the IT industry.

IAM from Argentina. Aficionated physics and mathematics

Good Evening Everyone. I am having trouble wrapping my head around the physics involved with the example below. At first i was looking at this as if lifting may create a lever of some sort, but I don't believe it has a fulcrum. I am trying to find a formula (if there is one) for lifting a mass...

Task: A football player hits the ball, which is at rest on the ground, so that it moves at an angle of 30° in relation to the horizontal plane and falls to the ground again after 3 seconds. a) How far from the point of impact will the ball fall? b) Calculate the velocity vector of the ball on...

This maybe complex and complicated - I know its going to be multi step. Please see attached picture. It involves velocity and weight and gravity torque force, pivot points.

This might seem like a rather peculiar observation and question. However, a rather strange physical anomaly was noted about a decade ago. While gazing thorough a living-room window. A flying-insect was seen with a portion of its torso fixed within the pane of glass. It seemed, as if, it...

This physics forum is sought as a source of review material and alternative perspectives. While, a thorough reread of an old O' Hanian, a Serway, and an edition of Menzel is being made. Physics was a intended undergraduate major. However, a freshman advisor stated that basically all of the...

Hello, my name is Luis and I am a physics novice, it is nice to meet you guys

I'm an undergrad physics and computer science student most of the way done with my degrees. I have a background in math (calculus, linear algebra, a little bit of group theory). Machine learning and data science are also areas that I'm actively studying. For anyone interested, my name is based...

Hi all. Started a conversation with Chat GPT about the big bang, C, gravity, time, thought experiments and other things that I mull over in my brain every few months and it suggested I talk to someone that's actually studied some of the things I asked about especially as things change...

String theory is a vast topic, and no grade 9 book will have content on it. However, no site or video gives it the attention this topic deserves, please input your understanding of string theory here. here are a few general questions to think about: 1)What is string theory? 2)Why was it made...

+1.56 - 43i1 - 75i2 = 0 +1.6 - 100i3 - 75i2 = 0 +i1 - i2 + i3 = 0——-> i1 + i3 = i2