Recent content by Physics2.0

I am sorry, I will elaborate. I am using Zemax in combination with pyzdde. However, I do not want to optimize my model, but see how the change in refraction indices, radii, curvatures, angles etc affects for example the spherical abberation. Since I am in full control of my model...

Hi, I have an optical model, fully programmably controllable with python. I want to know how much my variables (say N) of my model impact a certain parameter (i.e power, abberations). Now I have no clue how to go about this. There must be some analytical (numerical) method that I could use but...

I'm in my second year of my physics bachelor's (in the Netherlands) and my average score is about an 8.5. I like physics, but... I've already realized that an academic career in physics is not at all what i want to pursue. (eg. no theoretical physics/experimental physics in a lab). Basically...

Hi, While experimenting with various LED's in LN2, I noticed some strange behaviour from my green LED's. As expected all LED's (except the green one's) emitted light with a shorter wavelenth (for instance, my yellow led turned to red etc). However, my 2 (different manufacturer type LED)...

First of all thanks for the comments Sorry I haven't said this, but I know that. The trajectory of the first mass is: x1(t) = R(t) + \frac{m2}{m1+m2}*r(t) And the same holds for the second mass (but m2 will change in m1) Now I've learned that the time dependent radius r(t) cannot...

I still don't know which values to use. To be clear: I solved the kepler problem; the values I used were quite easy to determine, because there is only one radius and one velocity. So my question is: what is the position and the velocity of the 'imaginary' reduced mass of the two body...

The second derivative of -cosθ is equal to cosθ. Because [-cosθ]' = -sinθ and [-sinθ]' = cosθ so [-cosθ]'' = cosθ . Maybe this is also helpfull: http://www.wolframalpha.com/input/?i=x%27%27+%3D+-x

Hi, I'm new to this forum and I've got a question. In all articles I've found about the two body problem, they first start off by writing the distances between the masses as one function r(t) and one function R(t) (which is just simple the position of the reference frame). *note: i use initial...