Tips Definition and 533 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...

This is a helpful article about things to consider when dealing with folks who have Autism Spectrum Disorder (ASD) issues: https://www.firehouse.com/safety-health/article/55132057/top-5-firefighter-strategies-to-create-safer-encounters-for-individuals-with-autism-spectrum-disorder I found a...

Hi all, glad to connect. Here to spend my commute time on reading and engaging in something useful. Nice to meet you

I always get lost in my work and my work looks like this mess usually. Any tips on how to be neat? How to do calculations? Should I do put all numbers with their units in the paper? How about the units my Statics book says that I should always put them and this really gets boring so any idea...

I've tried writing the curl A (in spherical coord.) and equating the components, but I end up with something that is beyond me: \begin{equation} {\displaystyle {\begin{aligned}{B_r = \dfrac{1}{4 \pi} \dfrac{-3}{r^4} ( 3\cos^2{\theta} - 1) =\frac {1}{r\sin \theta }}\left({\frac {\partial...

I've decided to finally start my self-study journey of physics. I did consider joining a university course but I don't really care about the degree. I just want the knowledge. Plus, this way is much less stressful. My planned journey is this: Newtonian mechanics ----> Lagrangian Mechanics ---->...

I was wondered if anyone could give me some tips on what to expect going into a career in systems engineering. I completed my undergrad BS in Physics last year and I have worked as a student trainee optical engineer for two years (Intermittent schedule). I just completed my first year of grad...

I've collected a few starting points (below) but would love to hear from anyone who has their own account! I know TikTok is super popular so any advice on that, in particular, would be greatly appreciated! Thank you. https://www.iop.org/strategy/limit-less/social-media/good-practice-guide...

I am studying artificial intelligence for exam and came to a point where I need to revise everything I stuided. It ofc takes more effort in brain than learning the concept watching tutorials and reading blog posts as you need to memorize it(for exam). Any guidance, on how to crack this position...

Grad school courses are hard, but how to maintain at least a 3.7 GPA? That's it, I'm sick of caring about GPA, and consider in grad school this is my last time doing tests, I want to let myself go a bit and not get a perfect GPA. I don't want more burnouts in grad school. I'd rather focus on...

Hello guys, could someone give me a small hint to get me started on attempting this problem? I really cannot figure out how to relate conservation of momentum to the fact that there shouldn't be friction... does it have something to do with the so-called "sweet spot" of the ball? But then...

Hello, I'm a first year university physics student, and I'm having a hard time understanding the material, which badly affects my grades. I'm posting this thread hoping to get some tips for how and where to learn physics(reading materials, online lectures) aside from my university lecture, which...

Hi everyone! I just bought the courant John calculus volume-1 from uni bookstore. I need some tips like errors, topics which are not explained well and topics which are really important and need to focus more on etc.. My background:- have Spivak as a supplement. Knows how to prove and read...

I'm impressed by this article. https://arstechnica.com/information-technology/2021/10/securing-your-digital-life-part-2/ It discusses more than just choosing passwords and more than Internet security.. Do you disagree with the article? Do you have additional security tips that you use?

Hi, I have to do an exam (lasting 3 hours) where it is required to perform a very simple experiment. The test is graded, obviously, not on the experiment itself but on how you compile a report on it, tables, graphs, error proagation, data analysis, etc... all stuff I'm definitely not good at...

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Hi i been intressted in physics, along with math, computer science mostly ai, and electrical engineering for circuits and robotics. thing is time is limited as we all know, and i wonder how to study most time efficient. Right now i am reading through an electromagnetic physics book and i am...

Basically, I feel like there are two problems that I feel need fixing. But I haven't a clue on how to fix them. The first of my troubles is a technical one: I want to map the Home and End keys so that the selection on the list on item (iv) goes to the first and last items on the list...

I have a few questions concerning learning mathematics and physics. 1. How to learn abstract definitions? Must I do learn it by heart? How to understand and apply them correctly? 2. What type of subjects you learn in theoretical physics include mathematics. I need subjects with all years of...

For organic chemistry, what is important to memorize when I am reading a textbook? Should I memorize the structures and names of different organic compounds when they are described as examples? Or is it more important to memorize the organic reactions? Also, does anyone have any tips on how to...

I need to calculate the null clines of these two equations. I know that in order to find the null cline you set the equations to 0. I tried to calculate the du/dt equation and got up to \[ a+u-au-u^2 -v=0 \] Not entirely sure where I'm supposed to go from there. For the dv/dt equation I...

Here is what I have:

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Not sure how I am suppose to solve this.

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 want to understand most physics papers, but I don't have much time to learn every Math subject. When I was in college, I only took Calculus, Linear Algebra, and Statistics. I can't understand many Physics papers that interest me.

This is not only useful to biologists and physicists, but also to anyone wanting to engage with biologists and/or physicists. Thirteen tips for engaging with physicists, as told by a biologist Twelve tips for engaging with biologists, as told by a physicist Zz.

[url="https://www.physicsforums.com/insights/clearing-misconceptions-and-some-tips-on-debloating-android-phones/"]Continue reading...

I have used Acetone, to extract Lycopene from bacteria, as described in literature. But when I started to measure the absorbance (470 nm) using 96-well microplates, some of the acetone would evaporate and ruin my results (even with the lid on). Most of the literature that i have read uses HPLC...

Hi All, I was reading about how to go about the upkeep of cars that are rarely used , e.g. stored long-term in a garage and wondered about similar issues with PCs, laptops actually. Specifically, I keep one as a backup just in case and it goes unused for long periods. A search did not provide...

I will be taking a very important Physics test next week based on advanced physics topics. I realized that generally i am able to solve the questions successfully on my own. But the problem is when i take mock exams i seem to get “panicked” and miss details, or use wrong values. After the exam I...

Hi everyone! I'm a chemistry student, this year i have to learn different types os spectroscopy. I have had troubles to catch up with this subject. Would you please gimme some advices about sources of information to learn about spectroscopy? I Would appreciate it!

<Moderator's note: Moved from a technical forum.> Hi PF, I am learning how to prove things (I have minimal background in math). Would the following proof be considered valid and rigorous? If not any pointers or tips would be much appreciated! Problem: Prove that the notion of number of...

Hello. In my bachelor thesis I make motivational video experiments in physics (for high schools). I want to mention some already existing videos. I know videos from our country or channels from YouTube. However if I'm looking for some videos from Universities or professional organizations...

Hello. I ask for solution help from the integral below, where y and x represent angles in a metric of a spherical, 2-D surface. He was studying how to obtain the geodesic curves on the spherical surface, the sphere of radius r = 1, to simplify. The integral is the end result. It is enough, now...

Well I just took my midterm for Intro Computer Science and got a 59%. This is very frustrating because I've received 100% on all assignments and I feel like I am starting to get an understanding of the subject. However, this isn’t like mathematics or science where you can grind problems. It...

What tips should I follow to write a perfect essay?

I have this odd difficulty when it comes to vector calculus. No matter what I do, seeing these equations just stays daunting. Its a massive effort for me to read them, and when I say "read" I mean look at the equations, and actually understand what it is it wants me to do. Now as with most math...

There are a lot of strategies that can help to avoid it being total hell indoors in this hot weather. We've had many threads about Air Con and Air Coolers but these things are not widely used in the UK and it's too late to contemplate AC because they've all been sold! There are other ways...