Michelson Interferometer

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Presentation transcript:

Michelson Interferometer

INTERFEROMETER

Albert Abraham Michelson Michelson Interferometer Albert Abraham Michelson (1852-1931)

Experimental set up

Effective arrangement of the interferometer Circular fringes ©SPK

Longitudinal section –Circular fringes P rn N O q S S d D

In Young’s double-hole experiment: For small qm Radius of nth bright ring

In Michelson interferometer Radius of nth dark ring

Haidinger Fringe

Order of the fringe Formation of both real and virtual fringes

1. Measurement of wavelength of light

2. Measurement of wavelength separation of a doublet

Concordance

Discordance = (q+1/2)

Measurement of the coherence length of a spectral line Formation of straight white light fringes Measurement of thickness of thin transparent flakes Measurement of refractive index of gases Standardization meter

Reference 1. Optics Author: Eugene Hecht Class no. 535 HEC/O Central library IIT KGP

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