Diffraction

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Diffraction Meaning and Definition in Dictionary

Definitions from Wordnet 2.0


  • when light passes sharp edges or goes through narrow slits the rays are deflected and produce fringes of light and dark bands

Definitions from Wiktionary


  • when light passes sharp edges or goes through narrow slits the rays are deflected and produce fringes of light and dark bands

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Diffraction Meaning and Definition in Wikipedia


Diffraction is a physics concept. Diffraction occurs when waves bend around small obstacles, or when waves spread out after they pass through small openings. Diffraction occurs with all waves, including sound waves, water waves, and electromagnetic waves such as light that the eye can see. Diffraction also occurs with matter such as electrons.

Diffraction is caused by one wave of light being shifted by a diffracting object. This shift will cause the wave to have interference with itself. Interference can be either constructive or destructive. When interference is constructive, the intensity of the wave will increase. When interference is destructive, the intensity will decrease, sometimes to a point where it is completely destroyed. These patterns of interference rely on the size of the diffracting object and the size of the wave. The strongest examples of diffraction occur in waves where the wavelength is close to the same size of the object causing the diffraction.



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