A Michelson interferometer uses light from a sodium lamp. Sodium atoms emit light having wavelengths and . The interferometer is initially set up with both arms of equal length , producing a bright spot at the center of the interference pattern. How far must mirror be moved so that one wavelength has produced one more new maximum than the other wavelength?
Length from one more new maximum than other wavelength, L
These lamps are mostly utilized for street and industrial lighting.
The lamp works by using vaporized sodium metal to create an electric arc.
To help begin the lamp or adjust its hue, other compounds and gases are utilized.
For the sake of clarity, we will refer to the distance travelled by rather than .
The gap between both the number of fringes produced by each wavelength will be determined by
We can find it by solving for the distance para metrically.
In our scenario, we will have the following numbers:
A 600 line/mm diffraction grating is in an empty aquarium tank. The index of refraction of the glass walls is . A helium-neon laser is outside the aquarium. The laser beam passes through the glass wall and illuminates the diffraction grating.
a. What is the first-order diffraction angle of the laser beam?
b. What is the first-order diffraction angle of the laser beam after the aquarium is filled with water ?
94% of StudySmarter users get better grades.Sign up for free