PHYSICS UNIT 2: OPTICS- DIFFRACTION GRATING

i found this topic really hard to understand, got exam tomorrow, if youre a bit confused about diffraction grating, this is perfect. ive done a document on diffraction grating with diagrams and a worked example at the end! good luck and enjoy :DDD

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DIFFRACTION GRATING

Diffraction grating = a system which comprises of a vast number of narrow equally spaced parallel

slits. dSin = n
White light through a diffraction
grating, at each order maximum a
spectrum is formed due to different
colours having different wavelengths.
As red is longest wavelength it will…

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In the example above, using simple trigonometry where sin = o/h.
We can use the sides of the triangle equivalent.

i.e. Opposite, o = n. Hypotenuse, h = d

So getting sin = n / d, which rearranges to dsin = n
Note that in this example, as it's the…

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Reyez

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Thank you so much this has been so helpful, i can finally understand physics !!

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