- Diffraction is a type of interference
that occurs when light waves
- are emitted by a moving source
- pass through or by an obstacle
- have an excess of energy
- Diffraction from a single slit produces
a pattern of bright spots which
- are equal in intensity
- fade rapidly away from center
- grow brighter away from center
- If red and blue light pass through the
same slit in a mask, the pattern of red
spots will
- have wider spacing than the blue spots
- have same spacing as the blue spots
- have narrower spacing than the blue spots