Recent content by ATY

Hey guys, I'll have an interview for a PhD position on monday (they told me today) and need your advice. They want me to outline a sheme on how I'd create an experiment about sublimation on asteroids. The problem is, that I don't know anything about this topic. Do you have any ideas for me or...

So, I got a question about stationary field. In the lecture the professor said, that our field is stationary, so we have \frac{du}{dt}=0, but from what I read in books, it only means, that \frac{\partial u}{\partial t} =0. Who is right and why ?

so, but how do I explain this: So the circular movement in your video happens, because the pendulum is moving forwoard and backward, but in a case like this the particle does not move forwoard and backward on such large scales

Hello, I got a question about the coriolis force. It is probably super simple, but I am still not getting it: The coriolis force, forces my particle onto a circle trajectory, but I am not sure why (yes, I can show it mathematically, but I want to understand what is happening). When I am moving a...

Hey, thank you for the reply. I've found a book that explains it very well.

can somebody explain to me how kelvin waves are working ? I just found, that the waves move along the coast due to the coriolis force, but I have no clue why this is happening.

this works fantastically :D Thank you so much :)

ok, I tried it, but I got the following problem: 1. if I add a "&" at the beginning of every column to align the first 4 columns to the left side and additionally add an "&" before the "+" in the first column the program divides(?), because it thinks that I want to create a table. 2. if I do...

So, I got the following problem: I want to write my equation the way you can see it in the picture: I am actually running this: \ begin{align} \begin{split} ... \ end{split} \ end{align} My problem is, that I can not set multiple align points. I need one point to attach the first 4 lines to...

Thank you so much :)

Sorry for the confusion by my bad choice of words. I think I got it, but I just want to be sure: When we take a look at e.g. C.53 we have f_4 = (f)_{t=t^n}+\Delta t (\frac{\partial f}{\partial t}+f_3 \frac{\partial f}{\partial y})_{t=t^n}. If we just look at the beginning now; it means that I...

Ok. So I will try to go along the Taylor series notation of wikipedia right now: so f is the same f as from the appendix. \Delta t is the step size and is the same as (x-a). So does this mean, that (f)_{t=t^n} is the same as f(a) ? This would mean, that t=t^n is the position at which I evaluate...

Hey guys, I got one more question. I hope you do not mind it. I spend some time with the equations but, there is still one thing I do not understand. What do they mean with t=t^n ? I wrote an email to the author of the text and got this reply: But this does not really help me. I do not know...

Thank you for the answer :)

Hey guys, I need your help regarding the derivation of the fourth runge kutta scheme. So, I found http://www.ss.ncu.edu.tw/~lyu/lecture_files_en/lyu_NSSP_Notes/Lyu_NSSP_AppendixC.pdf this derivation. Maybe you have a clue what tehy are doing in C.54. So before this they are calculating the...