Chapter 38: Diffraction
Diffraction is the result of interference when a wave passes through an opening or edge. Diffraction effects are easier or harder to see depending on the wavelength of the wave and the size of a given opening. The physical principle behind diffraction is the same as that of interference (see Chapter 37): the superposition of waves. In order to observe the effects of diffraction, slits or gratings must be of a size comparable to the wavelength of the light.
Table of Contents
- Problem 38.1: Rank waves in ripple tanks by slit width.
- Problem 38.2: Rank waves in ripple tanks by slit width.
- Problem 38.3: Determine the slit width.
- Problem 38.4: Wavelength of light through a single slit.
- Problem 38.5: Wavelength of light through a diffraction grating.
- Problem 38.6: Number of slits per millimeter in diffraction grating.