Two light waves of the same frequency start out in phase (with amplitudes going up at the same moment), and they interfere having traveled different distances. What happens if the path difference in the two waves is 600 nm and the wavelength of the light is 400 nm (blue light)?
Two light waves of the same frequency start out in phase (with amplitudes going up at the same moment), and they interfere having traveled different distances. What happens if the path difference in the two waves is 600 nm and the
Hint: How many wavelengths are in the path difference, and what is fractional part left over since each full wavelength brings them back in step with one another.
|
The waves interfere constructively and there is twice the amplitude, 4x the power, at this place. |
||
|
There is some interference with light about equal to what it would be with one beam alone. |
||
|
The waves interfere destructively and there is no light power at this place. |
||
|
There is no interference because the waves are out of step with one another. |
Trending now
This is a popular solution!
Step by step
Solved in 2 steps
