Physics · Wave Motion and Sound

Interference, in physics, is the net effect/superposition of the combination of two or more light waves moving on intersecting or coincident paths. 

Diffraction is the bending of light around corners, causing it to spread out and illuminate areas. This is different from superposition, as diffraction involves the spreading of waves rather than their overlapping.

Polarization refers to the orientation of oscillations in transverse waves, such as light waves. It does not involve the superposition or interaction of multiple waves.

Interference occurs when two or more coherent light waves overlap, resulting in a new wave pattern due to their superposition. This phenomenon can lead to constructive or destructive interference, creating patterns of light and dark bands.

Reflection is the bouncing back of light waves from a surface. It does not involve the combination or superposition of waves.

Absorption is the process by which light is absorbed by a material and converted into other forms of energy, such as heat. It does not involve the superposition of waves.