Interference by a double slit With: - red diode laser λred = (650 ± 20)nm and green λgreen = (532 ± 20)nm: - double slots d=(0.25 ± 0.01)mm with a = (0.080 ± 0.005)mm on a support; - double slots d =(0.50 ± 0.01)mm with a = (0.080 ± 0.005)mm on a support; - Screen wall, white sheet and masking tape; - ruler; - Tape measure; - computer to perform linear regression in a computer Establish the relevant theoretical model: Write an equation relating the distance between the two slits (d), the wavelength of the light source (λ), the distance from the screen (L), the linear position (y) of the bright interference fringes and the order of these fringes (m). Use the small angle approximation. Indicate how to linearize the graph to find the wavelength. Explicitly indicate your choice for the variables X, Y, the slope and the intercept.
Interference by a double slit
With:
- red diode laser λred = (650 ± 20)nm and green λgreen = (532 ± 20)nm:
- double slots d=(0.25 ± 0.01)mm with a = (0.080 ± 0.005)mm on a support;
- double slots d =(0.50 ± 0.01)mm with a = (0.080 ± 0.005)mm on a support;
- Screen wall, white sheet and masking tape;
- ruler;
- Tape measure;
- computer to perform linear regression in a computer
Establish the relevant theoretical model:
Write an equation relating the distance between the two slits (d), the wavelength of the light source (λ), the distance from the screen (L), the linear position (y) of the bright interference fringes and the order of these fringes (m). Use the small angle approximation.
Indicate how to linearize the graph to find the wavelength. Explicitly indicate your choice for the variables X, Y, the slope and the intercept.
Step by step
Solved in 3 steps with 2 images
