Wave Optics

Anti-Reflective Coatings

1. Anti-reflective coatings reduce glare by minimizing reflection from surfaces like glasses and lenses.
2. They use the principle of destructive interference to cancel out reflected light.
3. Commonly applied on camera lenses, microscope lenses, and eyeglasses.
4. Improves the transmission of light, enhancing clarity and visibility.

Holography

1. Holography uses the principles of interference

Interference

1. Interference occurs when two or more waves overlap, resulting in a new wave pattern.
2. It can be constructive (amplitudes add) or destructive (amplitudes subtract).
3. The condition for constructive interference is that the path difference is an integer multiple of the wavelength (nλ).
4. The condition for destructive interference is that the path difference is an odd multiple of half the wavelength ((n + 1/2)λ).
5. Examples include the Young’s double-s