Light Passing through a Moving Medium

  • Context: Graduate 
  • Thread starter Thread starter Eldgar
  • Start date Start date
  • Tags Tags
    Light Medium
Click For Summary
SUMMARY

The discussion centers on the interaction of light with a moving medium, specifically in the context of a glass elevator. The concept of Fresnel drag, first measured by Fizeau in 1851, is highlighted as it explains how light behaves when passing through a moving medium. The index of refraction is also discussed, particularly how it affects light hitting the glass at an angle. The relationship between moving light sources and stationary light sources is examined, emphasizing the differences in their electromagnetic wave behavior.

PREREQUISITES
  • Understanding of Fresnel drag and its historical context
  • Knowledge of the index of refraction in optics
  • Familiarity with special relativity principles
  • Basic grasp of electromagnetic wave behavior
NEXT STEPS
  • Research the Fresnel drag effect and its implications in modern physics
  • Study the index of refraction and its calculations in different mediums
  • Explore the principles of special relativity and their applications
  • Investigate the behavior of electromagnetic waves in moving frames of reference
USEFUL FOR

Students of physics, optical engineers, and anyone interested in the principles of light behavior in moving mediums and relativity.

Eldgar
Messages
10
Reaction score
0
I was looking at light sources Bending in Accelerating objects from this astronomy page
http://www.astronomynotes.com/relativity/s3.htm"

Then i began to wonder if this moving elevator was made of glass then the light would
hit the glass and "move slower". Then if the glass was moving i was thinking the light would be shifted, but that thought to me seems to have some flaws.

I was also wondering about the index of refraction. From the perspective of the person in the elevator the light is hitting the glass at an angle which would cause it to bend more.
i was thinking that a moving light source would have an electromagnetic wave similar to the graph y=Sin(x)+x, and a stationary light source tilted on an angle would be the y= sin(x).
So i relize there is probably a difference between moving light, and light tilted on an angle, but
i would like to know if there is any difference in the index of refraction.

Any knowledge on these concepts would be appreciated.
 
Last edited by a moderator:
Physics news on Phys.org
Eldgar said:
Then i began to wonder if this moving elevator was made of glass then the light would
hit the glass and "move slower". Then if the glass was moving i was thinking the light would be shifted, but that thought to me seems to have some flaws.
This is correct. It is called Fresnel drag and was first measured in 1851 by Fizeau (http://en.wikipedia.org/wiki/Fizeau_experiment). This result is consistent with special relativity which was developed more than 50 years later.
 

Similar threads

  • · Replies 1 ·
Replies
1
Views
2K
  • · Replies 14 ·
Replies
14
Views
4K
Replies
15
Views
2K
  • · Replies 74 ·
3
Replies
74
Views
5K
  • · Replies 6 ·
Replies
6
Views
3K
  • · Replies 20 ·
Replies
20
Views
3K
  • · Replies 5 ·
Replies
5
Views
2K
  • · Replies 6 ·
Replies
6
Views
2K
  • · Replies 6 ·
Replies
6
Views
2K
  • · Replies 25 ·
Replies
25
Views
2K