Function to model intensity change over rotation

  • Thread starter Asuralm
  • Start date
  • #1
Asuralm
35
0
Dear all:

If I have a white light source which is at the positive infinite, and there is a plane receiving the light. Assuming that the plane is facing to the light source at the beginning. If I start rotating the plane, and keep recording the intensity of one point of the plane, what function can model the change of the intensity change please?

Assume that:

1. The intensity was 1 initially, and 0 if no light comes to it.
2. Mirror reflection
3. rotate from 0 degree to 180 degree

Intuitively I feel like cosine function can model the curve, is it correct?

Could anyone give me any hint please? It would be grateful if someone direct me to some books or papers please?

Thanks!
 

Answers and Replies

  • #2
buffordboy23
548
2
This sounds like a homework problem. This problem is not well stated in my opinion, but here are some hints to get you thinking.

Since the light source is at an infinite distance, what approximation can we assume for the EM wave incident on the plane? Also, as the point rotates with the plane (which, in general, causes the point to approach or to recede from the light source), is the variation in intensity significant to consider?

How large is the plane? Is it an infinite plane? In the case that the plane is small compared to the infinite distance, imagine the plane as a square loop. How does the electric flux change as we slowly rotate this plane?
 

Suggested for: Function to model intensity change over rotation

Replies
2
Views
351
  • Last Post
Replies
4
Views
411
Replies
1
Views
406
Replies
74
Views
615
  • Last Post
Replies
18
Views
557
Replies
2
Views
524
Replies
12
Views
488
  • Last Post
Replies
7
Views
549
Replies
4
Views
483
  • Last Post
Replies
0
Views
250
Top