17) What are the uses of a diffraction grating?
Ans: The following are uses of diffraction grating:
- The diffraction grating is an immensely useful tool for the separation of the spectral lines associated with atomic transitions.
- It acts as a "super prism", separating the different colors of light much more than the dispersion effect in a prism.
- The rainbow-like iridescent reflection on CDs, DVDs, and bluray discs is an example of diffraction grating.
- Diffraction gratings are extremely useful in study of structure of atoms and molecules, investigating the composition of stars.
- Diffraction grating is used in Spectrometers, Monochromators, Holograms, Fiber-optic Communications, Optical Storage Mediums, Lasers, and Light Polarization Devices etc.
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