Register to reply

Change in velocity of light with change in optical density

by utkarsh009
Tags: density, light, optical, velocity
Share this thread:
utkarsh009
#1
Jan28-11, 11:49 AM
P: 34
hey guys! we know that velocity of a wave = wavelength x frequency. and speed of light changes with change in optical density. so there must be change in either frequency or wavelength or both. which of these quantities change with change in optical density? and why?
Phys.Org News Partner Physics news on Phys.org
A new, tunable device for spintronics
Watching the structure of glass under pressure
New imaging technique shows how cocaine shuts down blood flow in mouse brains
Andy Resnick
#2
Jan28-11, 02:38 PM
Sci Advisor
P: 5,523
The wavelength changes by l' =l/n, where n is the (real part of the) index of refraction. The wavelength changes instead of the frequency because the momentum is given by wavelength, while energy is given by frequency.


Register to reply

Related Discussions
How does the velocity of light change in the vicinity of a black hole? Astronomy & Astrophysics 15
Thermodynamics - Change in Density due to Change in Height Advanced Physics Homework 3
Light velocity change in different medium General Physics 4
Density Change Caused by Temp. Change Introductory Physics Homework 3
Is the magnetic field change linear with the velocity change of a particle? General Physics 1