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Diffraction

4:31

Demonstrating diffraction using laser light – for teachers

4:20

Wave Diffraction

2:22

DIFFRACTION OF LIGHT WAVES THROUGH AN APERTURE

6:18

Interference, Reflection, and Diffraction

4:15

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.