Superposition of waves

1. Superposition principle. Coherence.

2. Two sources. Path difference. Phase difference. Resultant amplitude. Resultant intensity

3. Young double slit experiment.

4. Diffraction grating equation.

5. Diffraction grating. Total number of maxima on screen.

6. Diffraction by barrier.

7. Diffraction by single slit.

Resultant wave of two 1d waves traveling in the same direction 

1d superposition of waves generated by two coherent sources 

Superposition of waves from two sources

Phet - Two slit interference 

Hyperbolas

Intensity distribution  for N slits    

Single slit diffraction - Desmos   

Phet - Single slit diffraction