Waves versus particles - Huygens vs Newton. 

Waves behavior: refraction, dispersion, interference, diffraction. 

Condition for waves interference. Huygens' Principle. 

Young's Double-Slit experiment. Path Difference. Conditions for constructive and destructive interferences. 

Separation of light components in double-slit experiment. Diffraction gratings. Spectrometer and Spectroscopy. 

Diffraction by a single slit. Relative sizes of obstacles and light wavelength.

Thin film interference.

Practice Assignments