Beginner Definition and 350 Threads

I've often found myself wishing I could take a serious photograph when a certain view or object catches my eye. When I have tried to take a photo on my iPhone, for example, it never quite captures what really caught my eye or the image I have in my head. Inspired by all the great photos in the...

Hello, everyone! I'm aware that there's already a thread (probably many ones) for textbooks on the topic of CMT and also exclusively Solid State. As far as I know, Oxford's Solid State Basics is the recommended book for undergraduates and generally people only beginning their adventure with...

Hi everyone, I'm new to PF, if someone can guide me through the site then it'd be awesome, thanks...

I've watched a couple of DIY videos and one of them talked about TACK-welding. I'm a little overwhelmed with how many welding types there seem to be. Oxyacetylene welding equipment seems to be the cheapest, but which one of them all is the most versatile / useful in most cases? Also, which one...

I don't really know how to start here

I cannot find a clear answer on the following beginner’s question on some QM fundamentals: Suppose we have two particles, A and B. Let’s say we generated these as (or otherwise entangled them as) an entangled pair with opposite/orthogonal states. Perhaps horizontally and vertically polarized...

I'm looking at a book called python crash course for beginners (eric mathes), does anyone have experience of using this book or any other book that you would recommend for learning python if not that, is there a specific course you'd suggest that isn't in book form? I'm completely new to...

So, I have recently been trying to learn how to work with tensors. In doing this, I have come across Einstein Notation. Below is my question. $$(a_i x_i)_{e}= (\sum_{i=1}^3 a_i x_i)_r=(a_1 x_1+a_2 x_2+a_3 x_3)_r$$; note that the following expression is in three dimensions, and I use the...

Please help me to find what my mistakes are in the following java program.

Hello ! I have a problem understanding how light works in multimode optical fiber. What do I mean in single-mode optical fiber there is single light which contains information. In multimode there can be multiple lights with multiple information. Like here 1st picture contains multiple...

Summary:: I’m a beginner trying to get into Quantum Physics, and want some good resources (e.g. books) to get me started. Hi everyone! I’m a beginner trying to get into Quantum Physics, and want some good resources (e.g. books) to get me started. I have a very basic knowledge of physics (10th...

I am looking for a book that teaches the basics of physics that is easy to understand and good for self teaching. Any good suggestions?

I have calculated the height of the segment using the Pythagorean Theorem and that's currently where I am right now. I don't seem to find any equations that can help me. Though I might be not trying hard enough or using the wrong words because I'm not really fluent in mathematical terms as you...

Hi there, I’m looking for beginner to advanced physics textbook. The books doesn’t have to be by only one author or series of volumes. I’m in year 9 at the moment (australia) and really want to learn further than what the curriculum provides. I’ve got the feynman’s lectures on physics, so any...

Hello all, I've just started learning about diodes.. I believe I've done this problem correctly (question in black), although want to make certain I'm understanding the very basics before moving on. Thank you

I am just starting to learn quantum mechanics. And have some questions on entanglement. I have learned that when there is two particles entangled that they share the same wave function and cannot be considered by themselves. I am having a hard time understanding some of the nuances of this...

I am curious about space. How it works, what does it contain, all different sorts of things. Any suggestions on what books to read for a beginner so that this curiosity do not fade away with time.

1.8 Exercises page 49 I can't find the solutions to the questions. Where are they?

Special Relativity: For the Enthusiastic Beginner on page 49 1.8 Exercises I can't find the answers to the questions? I apologize if this is a dumb question.

I am trying to understand OpenMP, but my experiments are not paying off. I made a simple FORTRAN program to show me parallel time results. it turns out that parallel times are greater than single thread. What am I doing wrong? results: (changing number of threads) No OpenMP seconds=...

My daughter has just started her first year at university studying Neurobiology. She doesn’t have much experience with programming and is having to learn R (RStudio 3.0.2) from scratch for the statistical modelling/graph plotting parts of the course. She knows what she needs to do with her data...

How to learn fast C? - Is C really needed to be learned before C++ programming? - Are there any fast methods in learning C programming? -Please, answer this! Other sites are confusing and too complicated to understand. If you have any ideas or your own understanding please comment down below...

For instance, using the vector ##A^\alpha e_\alpha##: ##g_{\mu \nu} e^\mu \otimes e^\nu (A^\alpha e_\alpha) = g_{\mu \nu} (e^\mu, A^\alpha e_\alpha) e^\nu ## ##g_{\mu \nu} e^\mu \otimes e^\nu (A^\alpha e_\alpha) = A^\alpha g_{\mu \nu} \delta_\alpha^\mu e^\nu = A^\mu g_{\mu \nu} e^\nu = A_\nu...

Hi, I have no education in physics beyond the intro undergrad level. How do the clocks compare in the following scenarios? In the beginning, two clocks are placed next to each other and synchronized. Then they are moved in opposite directions, traveling an equal distance from the beginning with...

Dear friends I am new for this forum. I have a plan to begin studying computer science very soon. My qualification at the this moment is MSC in Accounting and Finance. I want to study computer science! Here there is a university working in collaboration with one of universities in USA providing...

I am switching from Mathematica to Maxima. Although both of them are symbolic computation programs, I think it is better to start studying Maxima's language from the basic stuff. Could someone recommend some good video tutorials to me? Thanks.

Dear forumers, I would like to do some RF measurements by using a spectrum analyzer or an SDR in the ~ 100mhz-6ghz range. I'm new to this and to the concepts in general and I would like to hear a few recommendations. I primarily interested here in how much it is acceptable to use a DIY...

[url="https://www.physicsforums.com/insights/a-beginners-guide-to-baryons/"]Continue reading...

Here is my solution. I used mathjax to type it up in Overleaf. I feel like it makes sense, but I also have a feeling I might have "jumped the gun" with my logic. If it is correct, I would appreciate feedback on how to improve it. Thanks!

OK I am in a lock down here with my Governor ordering us stay hometho So thot I would jump off the diving board into the world of SAGE However when I went to google for guiding light on this I got intimidated fastSo Does anyone done square one and more I would like some tips I did some SAGE...

I calculated the voltage of the resistors

Hi I am a first year engineering student I want to start by learning general engineering So I want books recommendation I want to understand the engineering behind the following Referegration Fans Car and automobiles Computers Civil works Buildings Planes Space craft Kitchen tools...

Like I said, I'm new to Special and General Relativity. It really sucks when I space out for 2 minutes in class and for the next 30 minutes I'm completely lost until the teacher brings up a new topic. I'm looking for supplementary materials (online preferably as I'm away from home) that can...

Hey everyone! This might be a bit of a dumb question, but I'm not familiar with much in the programming world. I know a few languages that I've learned on my own (online) or through a course in school (MATLAB). When it comes down to coding outside of MATLAB or a website, I'm not sure where to...

please refer me a good book for the Matlab beginner.

Hi, I want to start learning physics as I have never studied it in my life but have now taken an interest towards it. I have quite literally zero knowledge on physics, so assume I haven’t taken middle school or high school courses on physics, as I haven’t. I’m 17 currently, but that shouldn’t...

Hi, I have decided I like to learn some physics as I know absolutely zero physics and also including chemistry or biology, and I’d like to learn a bit of all 3, to the high school level perhaps. It seems that from, what I’ve read if I want to learn chemistry, I’ll first have to know physics, and...

My Question relates to Commercial Computer- or AI-assisted Math learning programs Can anyone recommend a competitor to ALEKS (which I used to use but gave up on when they revamped the lay out) Besides which, I have reason to believe that ALEKS may not be best value in computer-assisted math...

The first three equations i was given is as follows: Vf = V0 + at Vf^2 = V0^2 + (1/2)at^2 x = V0*t + (1/2)at^2 [why do they sometimes use y instead of x or V0,y?] I don't understand in what situations i would use them in nor do i understand why you us V=gt or X=Vx*T. (i understand g can is...

My Question relates to Commercial Computer- or AI-assisted Math learning programs Can anyone recommend a competitor to ALEKS, which I used to use but gave up on when they revamped the lay out (besides which, I have reason to believe that ALEKS may not be best value in town) Hello to everyone...

Hey guys, I just bought the book Elementary Cryptanalysis: A Mathematical Approach by Abraham Sinkov, yet before I start it, I would like to know if there are any prerequisites I should know about as I am 16 and I still haven't even taken all of high school mathematics although I am self...

Homework Statement I know that a bead is threaded on an metal sring (no T), and the bead is not moving/ The metal string moves in circular motion at a slope of 60 degrees. The string moves one spin in one second/ which powers works on the bead? Homework EquationsThe Attempt at a Solution

Hi everyone! Sorry for the bad English and the silly question! My mind isn't very Sharp, so I just want to make sure I understood it right... I've read the faq and I found this info amazing! If I understood correctly hahahaha! So, there's two main interpretations of the findings of...

Hi, I am an Alevel science student and looking forward to study Astrophysics in university. Can someone recommend books that are more like fact books with descriptions of celestial bodies, their composition, formations and etc. Like more like an encyclopedia than a book .

Homework Statement Homework EquationsThe Attempt at a Solution I noticed that the units are in mm and i usually would convert to meters for the convention. But, is it okay to leave the mm as is when i calculate the unit vectors since the unit vectors are unitless? I don't want to deal withd...

Imagine that the chances in the USA of adult men having GAD are on average 1 in 100. But what of the subset of adult men who already have MD? What are the chances that such men will have GAD as well as MD? An odds ratio tells us about the increase in the chance that such men will have GAD...

I'm in high school and would like to write a paper on physics for fun, any topic suggestions?

Hi everyone. I'm getting slightly confused about the general function notation used. I was wondering if the name of the function were to change if there was an edit to the equation. What I mean is let's say we have the graph f(x) = x^2. If I were to vertically stretch this equation by a factor...

When studying equations, formulas, laws - am I supposed to understand each bit of information ? For example, let's take Fick's law: So I can memorize the law and I can tell with words what is "t", what is "x", what is "D", and so on, but I don't truly understand why is one divided with the...