Youngs double slit experiment and diffraction gratings

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8 Terms

1
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double slit requirements

2 coherent waves with same wavelength…fixed phase difference

2
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double slit equation

wavelength=ax/D…where a is slit seperation, x is fringe seperation and D is distance

3
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increasing a

wavelength increase, d increases, x decreases

4
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maxima

bright spots of a diffraction grating

5
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zeroth order maximum 

central fringe 

6
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diffraction grating formula

dsinx=n*wavelength…d is seperation between grating lines and n is the order

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calculating d

1/number of lines

8
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dispersion

splitting of light into its component wavelengths