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Young’s Double Slit Experiment. Young’s double slit © SPK.

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Presentation on theme: "Young’s Double Slit Experiment. Young’s double slit © SPK."— Presentation transcript:

1 Young’s Double Slit Experiment

2 Young’s double slit © SPK

3 Path difference:

4

5 For a bright fringe, For a dark fringe, m: any integer

6 For two beams of equal irradiance (I 0 )

7 Visibility of the fringes (V) Maximum and adjacent minimum of the fringe system

8

9 Thomas Young's Double Slit Experiment

10 Photograph of real fringe pattern for Young’s double slit

11 The two waves travel the same distance –Therefore, they arrive in phase S S'S'

12 The upper wave travels one wavelength farther –Therefore, the waves arrive in phase S S'S'

13 The upper wave travels one-half of a wavelength farther than the lower wave. This is destructive interference S S'S'

14 Young’s Double Slit Experiment provides a method for measuring wavelength of the light This experiment gave the wave model of light a great deal of credibility. Uses for Young’s Double Slit Experiment

15 Fresnel double mirror P1 P2 © SPK

16 Fresnel biprism © SPK

17 Lloyd’s mirror © SPK

18 Billet’s split lens © SPK

19 For a bright fringe, For a dark fringe, Extra phase difference ±  in Lloyd’s mirror

20 Wavefront splitting interferometers Young’s double slit Fresnel double mirror Fresnel double prism Lloyd’s mirror

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


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