Physics Definition and 985 Threads

Hello my fellow physics enthusiasts!

Hi everyone! I've begun teaching myself physics with the Feynman Lectures books. However, I find the exercises so difficult. After reading a chapter, I struggle with how to approach the exercises effectively. I understand that this isn't an easy process, but I feel I need a deeper understanding...

I want to be a member of this forum for the prime reason to learn about other aspects of physics that currently I am unaware of.

Hi, I am a physics graduate but now I am teaching middle school science, I have been struggling because it seems that everyone is looking at me as a teacher rather than a physicist and the fact that I lost a lot of my ability to do physics only makes things worse. was anyone in a similar...

I hope this is the right forum right now I’m a 2nd year physics student in the United States and I’m really interested in nuclear/plasma physics. The thing is that I know the U.S. has great national labs to do internships at and good graduate schools here but I’m also interested in studying...

I understand that there are vacuum solutions of the equations of general relativity (GR) (i.e. equations with no mass-energy content contributing to the stress-energy tensor), that are studied by physicists interested in GR. I don't understand why these are studied or what purpose they serve...

For the past few months, I've been on a look out for the best physics community on the Internet and I've just come across this one. My primary goal is to gain as much knowledge as possible in the area of classical mechanics and electromagnetism in a year. I'm fairly new to magnetism, but I can't...

I am a second-year combined honour in physics and math with prerequisites for 4th-year math courses. I am hoping for a direct entry (if possible) into a top US PhD physics program in quantum with a current unofficial cGPA of 3.9/4 (88%). Since I am in Canada, we only have percentage grades that...

Hey guys, I am Henricus. You can call me Henry. This year (accurately 2024) I'm a middle schooler and i have an interest to physics, especially quantum physics & particle physics. If I had a chance, i would like to get a scholarship in theoretical physics. I've learnt Lagrangian and Hamiltonian...

I was born 1963 and received my bachelor degree in Physics which I found it very attractive subject.

Hello! My name is Graeme and I'm pursuing a BS in Astrophysics. I have undergraduate degrees in business, economics, and analytics, and a Masters in business analytics. When I was nearing the completion of my MS, I rediscovered my love for science and enrolled in this BS program shortly after...

Hello, everyone. Thank you for allowing me to post on your forum. I am not good enough at math to become a physicist, but I love physics and found this forum through my Google searches. Hopefully, I can learn enough here just to call myself Smith

I’m a physics major (going to be a junior in the august) that would like to go into astrophysics!! I picked physics for a major bc i like knowing how things in our world work + i’m especially interested in space. I lowkey am just seeing where the wind blows me so I really don’t even have a fully...

If someone believes they have developed a somewhat unified theory that brings together various physics concepts into a Unified Theory of Energy, but they are concerned about being dismissed or criticized by members who strongly adhere to conventional academic views, where in the Physics Forum...

I have been using Maple for a decade, but only recently started using the Physics Package. I unfortunately ran into trouble to contract indices ( Maple calls it SumOverRepeatedIndices ). Below I give an example that will execute if you paste it into a Maple worksheet. A metric is defined. A...

Hi - AP Physics teacher here, from Florida. Happy to join in!

Hi. I need your help! I have a college physics question Suppose there are pipes A and B. [Figure 1] I had to connect pipe B to pipe A, but pipe B was short, so I bent A by about 30 degrees and installed it. [Figure 2] It's a picture of the pipe A being installed by increasing the length in...

Good day to all. I'm a new member who is fascinated by and interested in physics, quantum mechanics, astronomy, and cosmology, though I never took classes during my schooling. Admittedly, I have basic math skills and worked hard to attain mediocrity in math classes (a living example of the law...

Student of master of physics.

Hello, can anyone tell me about applications of Diophantine linear equations to physics?The only example that comes to mind is that of a series of weights. I have a measuring rod that is 40cm long and hinged in the middle. If I put a 40g weight at one end, how can I place 5g, 7g, 11g, 13g, 17g...

I have had a life long interest and fascination with physics and love to learn more about the different aspects of it. This forum is greatly appreciated for the wealth of knowledge and experience that is freely shared amongst the members. I apologize in advance for my child like wonder and...

Hello everyone! My name is Amman, and I'm thrilled to join this vibrant community. I wanted to take a moment to introduce myself and share a bit about my background, interests, and what I hope to gain from being here. Background I hail from a small village in Pakistan, a place that holds a...

Hello Everyone. Thanks for accepting me as a member :smile: . The bar for joining was set exceptionally high, yet here I am! I am a phys grad, and read physics books when I have the time.

For anyone interested in ‘what it used to be like’… Sifting through some old paperwork, I found one of my 1967 A-level physics exam’ papers. For those unfamiliar with UK ‘A-levels’ in 1967, they were national examinations generally taken in school at about age 18. Students typically studied 3...

Hi everyone:oldsmile: I'm a third year physics student in Birzeit University, recently knew about PF, hoping this website can help me deepen more in the world of physics, also to dig in the computer science thing. I work at the observatory in my University as a member in it ( I present lectures...

Diagram Integrate pressure for each particle: Add normal force and weight Sum all the forces in the x and y direction to get:

What would be the ideal wavelength and power of a laser to kill an insect on human skin without burning the skin ?

I’ve heard at least a million times that you need to understand physics, but never actually understood in which way? When I study, I understand what the textbook says and how to apply it. But questioning why is it the way it is, usually confuses me and many times leaves me uncertain, I doubt it...

TL;DR Summary: how can I calculate the acceleration of a bike whilst using phyphox? Calling all physics lovers who are willing to lend a hand, Hello, I’m busy doing a physics project on the friction force on different surfaces, like asphalt, grass, etc. I need to measure the data using an app...

I was reading this article https://www.technologyreview.com/2024/05/15/1092535/a-wave-of-retractions-is-shaking-physics/ Are the numbers actually up? I am not saying that processes cannot be improved.

Hello everyone. Today I registered. I hope to share good times and learn interesting things. I live in Argentina, far from the main centers of scientific activity. It is a great experience to frequent Physycs Forums. Kind regards.

Hello to all, New to the forum, I'm not trained in the science of physics. I typically get focused on a singular topic (not unlike the fictional Columbo character), conduct experiments then attempt to compose organized questions and really appreciate the more knowledgeable who are willing to...

TL;DR Summary: The reason to force us consider complex solution for harmonic motion. Reference textbook “The Physics of Waves” in MIT website: https://ocw.mit.edu/courses/8-03sc-physics-iii-vibrations-and-waves-fall-2016/resources/mit8_03scf16_textbook/ Chapter 1 - Section 1.3 (see attached...

I was very fortunate to get into both Cornell (with the Meinig Scholarship) and Berkeley (with the Regents Scholarship) and have the difficult decision of choosing between the two. While I know Berkeley is known for its engineering and physics programs, Cornell is apparently strong in that field...

Hello! I've looked around the community, and this seems like a great place to ask the question to experienced professionals! I was wondering what kind of life does such a career in physics entail? I'm trying to contemplate a career in academia, but I'm quite nervous on the career switch, hehe...

<Mentor’s note: this thread is closed as a duplicate of https://www.physicsforums.com/threads/the-coming-revolution-in-physics-education.954664/ > In the March 2024 issue of Nature Physics 'Computing in Physics Education' (https://www.nature.com/articles/s41567-023-02371-2) we read: "In the...

Hey y'all, Physics major from a UC here. I wanted to see if I could get some brutally honest insight on my chances of admission to the Physics graduate program to schools like Caltech/MIT/Stanford/UChicago to anyone who may be able to provide it. [Current Stats] I'm a second year Physics...

Hello everyone. I am new to this website but not new to physics. I took physics in high school and college, but I did forget a lot of what I learned. I graduated from college with a degree in Electronics Engineering. I graduated in 1997. The areas of physics that I am the most interested in is...

Hello everyone, Always followed physics forum from my high school to read about solutions and interesting discussions on fundamental physics questions. Now in my PhD I am ever more daunted by physics problems in an intriguing way and would once again have fruitful discussions or follow some...

not studying physics but i have some courses that requires a good amount of electorstatics and electromagnetism

I'm trying to brush up on my Calc 1-3, and Physics 1-2. I got up to integration in Thomas' Calculus book no problem. The integration part of it is a bit convoluted to me though. So, I'm trying to find opencourseware that I can look at and go at my own pace through it. I have a few sites, but...

What in physics (or some other topic) would you memorize if you could? Yeah I know memorization doesn't usually have a point, just asking, if you could just do it without effort, what would it be? Or maybe you have done it, in which case, what is it?

Hiya! I spend most of my free time thinking about physics and concepts. I want to strengthen areas where my knowledge is weak as I do not learn or digest information linearly. This presents some problems when trying to digest mathematical concepts or I probably would have felt inclined to study...

Are there any alternatives to tracker for tracking moving objects? Paid or free Most of my issues with tracker are related to working with large files or videos that are long, it is really slow or it just doesn't work

Yes,, I know, it may not be the most obvious route but I had already submitted the subject preference list to the university and there is no way to change it. (Therefore, I beg you to not make me regret my choice, since, there is just no way to revert it) . The math I am going to learn from...

For California Community Colleges the minimum requirement for Physics instructor is: Master's in physics, astronomy or astrophysics OR Bachelor's in physics or astronomy AND Master's or above in engineering, mathematics, meteorology, or geophysics OR the equivalent. If the MS Physics program...

Hi everybody. I am Looking for brief explanation and some practical examples to practice the usage of the term dv/dt in modern applications .

Short introduction. Greetings Physics community looking forward to discussing matter, literally. Intersts and expertise: Astrophysics/Helios Science, Nuclear and Particle Physics, Quantum Physics. Whish yall a great day.

Hi all! I'm currently enrolled in a civil engineering program, and need some advice and recommendations. I've taken Calculus 1 through 3, and am finishing up Elementary Differential Equations this semester. I've taken Physics 1, and received a B. I'm honestly surprised I made it out of that...