Materials {diffraction grating}| can have regular repeating opening or ruling patterns, so surfaces are like many edges. Diffraction gratings can be for parallel rays {Fraunhofer grating} or spherical rays {Fresnel grating}. The many edges cause strong diffraction pattern, because more wavelets add together to make higher amplitude. If openings are small or rulings have close spacing, diffraction is more, because smaller edge can re-radiate more behind edge.
Physical Sciences>Physics>Wave>Diffraction
Outline of Knowledge Database Home Page
Description of Outline of Knowledge Database
Date Modified: 2022.0224