The Wave Nature of Light
Goal: Use diffracting grating to determine wavelength
- Diffraction grating
- Frosted glass screen
- Set up your apparatus as shown below:
- Determine your values for the diffraction grating.
- Measure L and x to the first (and if possible, second or third) maxima.
- For each maxima, use the relationships shown to calculate the wavelength.
- Average your values.
- Present your data in tabular form.
- Along with the usual materials, procedure, setup, and data, show your calculations of wavelength and determine whether this is a reasonable wavelength for a ruby laser.
Post your report to the Lab thread at the Moodle.
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