Physics Definition and 985 Threads

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

Putting the questionable nature of my professor's problem-writing aside, I found this question pretty confusing. I assumed that 60 m was the focal length, and that R1 was infinity since it is a flat surface. This gives me: 1/60 = (1.5 - 1)[(1/∞) - (1/R2)] This gave me R2 = 30 m, but that isn't...

My name is Les and in 1977 I began studying Physics at Texas A&M university, After four years, I decided a career in Physics was not for me. Since then Ihave been working as an Engineer.

This is a spin-off of a similar problem posted here in which the cylinder gathers snow as it rolls down an incline. I think one has to understand the snow-gathering process before attempting the more complicated case. A horizontal surface makes that easy but because it is a different problem, I...

hello! my name is Mohammad Sameer from India. Pursuing five years integrated masters in physics, will be starting my second year in couple of days. Interested in quantum theory of classical entities and want to explore more in the domain.

This is a response to a recent insight article regarding the twin paradox. The idea is to model the most basic scenario in a way, that the paradox disappears. This basic scenario and its kinematic effects are then modeled using only a straightedge and a compass. The best way to read this post...

Hi, My name is Albert, and I'm here to learn and share knowledge and experiences throughout my journey in physics and human sciences.

i have just started on relativity, so be simple. you are going to travel 1 lightyear at half the speed of light. therefore, it would take 2 years to travel 1 lightyear. on Earth, you would see me going half the speed of light, so it should take two years as well? i calculated gamma as being...

Something I have been thinking about and don't really have a good answer to. For context, let's take physics and engineering for example. From my understanding, a very rough definition of physics would be the study of naturally occurring physical phenomena and understanding how they work...

I'm supposed to enter a valid message so here we go. I'm a girl obv and very much interested in physics. Found this platform on google and thought it might help me quench my thirst of ever growing curiosities. Yea, that's it pretty much

I'm a retired physics teacher who taught physics and AP physics for maybe 40 years. I saved my problem sheets and tests. If you are a beginning (or experienced) teacher and need pre-made problems and tests I'll send you mine. I'll wait a few months for a reply, then to the dumpster they go...

Is there a category to ask physics questions based on very little information? Namely a YouTube video that discusses a topic in a way that confuses me that I merely want clarification on?

I need one since im about to enter university next year and i didn't have so much physics in HS so i might need a bit of help

Math grad, crazy about physics!!

HI, I am an International Student studying in the US (at a "liberal arts" small college ranked in the Top 20 as per US News Rankings). I will graduate in 2024 and intend to apply for PhD programs in Mathematical Physics starting October 2023 for admission in 2024. GPA: I am a double major in...

Consider an object which is constituted of two different materials, which are inseparably mixed together, but which have different magnitude of masses. To calculate the gravitational force of the object upon another object, can the superposition principle be applied to the two constituent...

I apologize for messy title, but that's as short as I could make it to say all that I wanted. I also apologize if I'm not using correct math phrases, but I'll try to picture a problem the best I can. I've been pulling my hair out trying to solve a problem I'm having for couple of months. The...

Hello! I'm from Croatia and one of my pass time obsessions is game physics, especially ragdolls, and any game that lets me play with that is a game for me. I did some mods for games like Fallout New Vegas which modify how physical objects in game work which seem to be popular. Anyway, I hope...

I’m Jessica, a (nearly) 25 year old trans woman from the UK. I studied Physics and Astrophysics at university before dropping out. I dropped out for mental health reasons which were later diagnosed as Gender Dysphoria. After a few years away, I have now begun tutoring Physics to a friend in...

I have bachelors degree in electric engineering and masters in engineering management and 14 years of experience in software product development. So no experience in physics at all. Is it possible to do a phd in physics ? Its always been my passion that i now think about pursuing

The following is more of an interesting example and observation than a question that I am presenting for public comment. It's somewhat related to a recently thread, which was closed for moderation, but I think it's different enough not to fall under the ban of reposting threads that have been...

I was given two HW questions, I was supposed to solve on using ##<\vec{a}> = \frac{\vec{V}_f - \vec{V}_i}{\delta t}## and another using ##<f(x)> = \frac{\int_{x_1}^{x_2}f(x)dx}{x_2 - x_1}##, I was able to solve using the first formula but I wasn't able to do it with second (at least I got the...

Non-perturbative methods are critical in parts of quantum field theory, such as QCD, and have at least some applications in quantum electrodynamics. You can also have mathematical problems that don't have perturbative solutions. But, it isn't clear to me if classical physics can ever have...

Homework Statement: A door opened at 75 degrees from the latch remains at rest. When moved to a position 60 degrees from the latch, it slowly closes on its own. Is there another possible cause besides a sloping floor? Relevant Equations: \tau = r x F; v = \omega x r; a_T = \alpha x r, where...

I'm asking about this with particular reference to the signs of the answers. Here is the question: The answers in the back of the book are: (a) ##1.2 \times 10^4 \text{ N}## (b) ##39 \text{ m}## (c) ##4.7 \times 10^5 \text{ J}## (d) ##4.7 \times 10^5 \text{ J}## Here's a rough sketch of...

I am planning to take undergrad physics but I am concerned about the pay scale of physicists. Since I am the leader of my family (after my father), I will be financially supporting my family soon as my father retires (we have a family system). I also will have my wife and children. The reason I...

Hi, unfortunately, I have problems with the following task I tried the fast way, unfortunately I have problems with it I have already proved the following properties, ##\bigl< f,xg \bigr>=\bigl< xf,g \bigr>## and ##\bigl< f, \frac{d}{dx}g \bigr>=-\overline{f(0)} g(0)+\bigl< f,g...