Physics Definition and 985 Threads

Hello, I'm finishing my junior year in physics this spring and I am starting to get more serious about graduate school applications. I currently have a 3.6 physics GPA, around a 3.5 math GPA and a 3.75 total GPA over the last ten years. I did community college for a few years and then...

Hey everyone, I'm a junior physics major at a state school in New England. Just making an account and posting to get some advice mainly about graduate school admissions. Thanks!

I hope to learn more physics from here :)

I am a physics Bsc student, but I want to be a mathematician. I will do a masters before a PhD. But most good international Math masters programs won't take me in because I don't have enough math credits. (I can't take extra pure math in my stupid uni). But I am self-studying undergrad pure...

This is a basic conceptual question. Consider having a pulley mounted with identical mass of block A and B. If i pull the block A slightly by say 10mm, and then release it. Will these weights try to balance itself due to potential energy difference or will be in the same state?

Hello everyone, I'm a CS student who likes physics and have physics questions from time to time and don't know anyone who knows anything about physics, so I thought this would be a good place to find answers sometimes. I'm learning some physics on my own too, but it will probably be a while...

First of all, merry Christmas! I'm quite new here and I've been told to introduce myself, so here it goes: There isn't much to say, I have no degree yet and little research/academic experience, as for my interests I like physics, electrical engineering and computer sciences, I know python...

I'm trying to figure out the optimal way to apply for REUs for this coming summer under my circumstances. In short, I obtained my AA at a state college back in 2014. Solid 4.0, graduated Summa Cum Laude, multiple honors, and was even commencement speaker at my graduation ceremony. The problem...

I am going to community college this summer with a focus on physics. I am VERY excited! I know it’s early to ask this, but is a PhD in physics worth it career wise? I hear actual jobs in physics are few in number, but they open up possibilities in other fields. Is it worth it in your opinion?

Hi, What do you think are the best Russian/Soviet/MIR physics books that are available in English? Should be undergraduate level or higher. All time classics that really explain the subject matter well. Thanks.

This Physics Problem is Unsolvable This is the question presented in Sabine Hossenfelder's video. What would be the consequences of this statement?

Kent here. I run a construction company where I sometimes need some technical input on physics. I'll come here to ask questions from people smarter than myself!

I am a physics student at the Rio de Janeiro Institute of Science and Technology. I'm 27 years old

Inviting comments as well

I live in live in Italy and have a degree in physics.

Hi all, I'm a european about to have to start his Master's thesis in particle physics. I might have the opportunity to choose between SLAC, Brookhaven lab and Purdue university. Purdue would offer me a more standard academic outlook, with the prof even mentioning a probable phd opportunity after...

Good day everyone I'm a interested science student who loves physics and it's calculations

Hi everyone! I would like to get advice concerning my math course for the spring semester. For context, I am a Harvard freshman planning to double major in physics and mathematics with the long-term goal of doing research in high-energy theory and/or mathematical physics. I am currently...

Hey all, hope you are doing well! I did my BSc in theoretical physics at a Russell Group uni and achieved a first class honours. I also did a MSc in theoretical physics from another Russell Group uni. I got an offer for a PhD to begin right after I finished my MSc but the funding fell through...

Hi. I'm an engineer, not a physist. That being said, I have an interest in physics - particularly in the field of general relativity.

To be frank im not exactly sure where to even start. We were given a diagram in which two masses (m1 and m2) are connected by string which is draped over a circle (m3) that is fixed on the ceiling. From m2 is hanging a spring which is, i guess, attached to the floor. The question asks what would...

I was thinking of writing a motivational essay for physics undergrads where I provide a list of equations which have the property of telling you when you mastered (at undergraduate/early graduate level) a field of physics. Here are some examples: Electromagnetism: ##{\partial}^2 A^{\sigma} =...

Hello Universe, I am Benjamin (Ben) I am new to this forum. At first, I will just be nosey and read through the post to get a feel for the environment. I am open for any discussion about any subject. I keep an open mind about everything. Here are a few areas of interest I have but not limited...

Homework Statement: Trying to understand electrical calculations in AC Relevant Equations: I = V/R Here it is :

Relevant video ##\Rightarrow## Physics questions and answers My answer to Q.2 Let's break down the problem and solve it step-by-step: 1. Find the dipole moment (p): The dipole moment is defined as the product of the charge (q) and the separation distance (d) between the charges. p = qd Here...

I am excited to join this fantastic community! My name is Sara, and I have been teaching physics at the high school level for the past 10 years. Helping children discover the beauty and logic of the physical world is one of my greatest passions. My favorite topics to teach include...

Hi! First time poster here, looking for some advice on how to optimize my CV for the title-stated goal. By “top-tier”, I have the big three of Princeton, MIT, and Columbia in mind. Those schools are the target because while I really love experimental work, I want a PhD that will give me the...

Fundamentally I'm struggling with the premise of the problem. Once I get that I think the math of solving the problem will be straight forward. But like I said I think the problem is fundamentally unsound. I hope to be proven wrong. initially there is no current in the lower branch of the...

TL;DR Summary: Any good? Oxford Dictionary of Physics 8th Edition Does anyone here have a copy of this? If so, any thoughts on it? I got the most recent edition recently (8th) which was published in 2019 so it's fairly up-to-date. It seems ok to me (a novice) for a quick reference guide. I...

I came across the forum while searching for information, and then I realized that this might be the kind of physics forum I was looking for

There are so many concepts in science, especially Physics, that make absolutely no sense to me unless I begin to study the underlying history of the concepts. So please correct me when I'm wrong because I'm sure I am sometimes. The first concept I think about is Voltage. I was extremely familiar...

I will ask physic questions.

I really like physics especially relativity and classical physics like Newton's laws. I have joined this forum to discuss and learn more about relativity, classical physics and the weird QM

Hi everyone, I am not sure if I have calculated task b correctly: The Lagrange function has the form ##L=\frac{1}{2}m\Vert \dot{\textbf{x}}\|^2+\frac{q}{c} \dot{\textbf{x}} \cdot \textbf{A}-q\phi## I then formed the canonical momentum ##\pi=\frac{\partial L}{\partial \dot{\textbf{x}}}##...

Hi Just a brief intro/bio. Aged 68.5yo but mentally still a (responsible) teenager - that may be an oxymoron.. Interests: Astronomy, Cosmology, Spectroscopy, solar dynamics and anything Physics and maths related. Beyond that, add any other form of science and for more fun, I design, build...

I have developed a website aimed at bright students who are getting towards the end of high school or are in the gap before they go on to university, and who want to stretch themselves a bit and tackle some physics that goes well beyond the school curriculum but is nevertheless accessible with...

A thin uniform rod has mass M=0.510 kg and length L=0.470 m. It has a pivot at one end and is at rest on a compressed spring as shown in (A). The sequence below shows that the rod is released from an angle θ1=59 degrees, and moves through its horizontal position at (B) and up to (C) where it...

I always have had a burning desire to understand what reality is and how it has come about, Have studied philosophy (on my own not academically) for many years and this led my to compare what I gleaned from there to physics, especially the both the theories of Special and General Relativity and...

The internet has a question for the PF members who are also musicians. Is quantum physics easier than playing this guitar piece?

Something has prompted me to peruse this forum like a morning/afternoon/evening newspaper after I've joined and now I can't help but scratch my head about a few things. See, I'm a traveller from the distant realm of technical universities (which are completely different beasts from non-technical...

Hello, fellow users of the Forum. Excuse my English, as I'm writing in a hurry. What I'm going to describe here is mostly another case of a (potential) Physics after Engineering Syndrome. I'm aware that this is an neverending topic on the Forum and have read a lot of posts on this subject...

I am a retired high school and college teacher doing independent study in physics. I am interested in cosmology and information mechanics, a unified theory that derives gravity, quantum mechanics and more from an elegant new conceptual foundation in which the information represented by physical...

Hey guys this seems like a lovely forum and I do love physics I’m an a level student who is resitting a level physics in the uk bu I still have a passion for it :D

I have a passion for sciences, especially Astronomy since young. I was interested very early in sciences, but the course of my life took a different path. Now, almost close to retirement, I plan on diving in mathematics and physics again. After all the time spent far from these areas, I decided...

https://en.wikipedia.org/wiki/Leon_Cooper Leon Cooper Dies at 94; Nobelist Unlocked Secrets of Superconductivity https://www.nytimes.com/2024/10/25/science/leon-cooper-dead.html https://www.nobelprize.org/prizes/physics/1972/summary/ The Nobel Prize in Physics 1972 was awarded jointly to John...

i have no idea

Hello, I am a high school Physics teacher. I have always loved Physics and took every physics class I could in college. Studying and teaching physics are indeed two entirely different processes. I have an associates of engineering, chemistry, and education degree. My father was heartbroken...

Hello to all, I am looking for a little bit of advice/guidance here. I am a third year physics undergraduate. Just beginning to take classical mechanics, and I do feel a bit out of place in the class. I feel like my vector calculus skills are far too underdeveloped/rusty for the course I am...

Can someone explain what is a dipole moment for me? and what it relationship with F and torque?