Demonstrating diffraction using laser light – for teachers
DIFFRACTION OF LIGHT WAVES THROUGH AN APERTURE
Interference, Reflection, and Diffraction
Wave Behaviour | Waves | Physics | FuseSchool
Diffraction refers to various phenomena that occur when a wave encounters an obstacle or a slit. It is defined as the bending of waves around the corners of an obstacle or through an aperture into the region of geometrical shadow of the obstacle/aperture. The diffracting object or aperture effectively becomes a secondary source of the propagating wave. Italian scientist Francesco Maria Grimaldi coined the word "diffraction" and was the first to record accurate observations of the phenomenon in 1660.