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White Light Fringes

AQA AS-level PhysicsOpticsLesson 18 of 27

Since fringe separation depends on wavelength and different colours have different wavelengths the fringes of different colours can be seen.

Blue light fringes are closer together than red light fringes.

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Key terms in this lesson

Fringe spacing
The distance between the centres of adjacent bright, or dark, fringes in an interference pattern.

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