This video introduces and explains diffraction gratings for A Level Physics.

If you shine light, or other types of EM radiation, through a series of small slits, the waves interfere causing constructive and destructive interference at certain points. We can then use this method to calculate the wavelength of light. It is also why DVDs and CDs make beautiful rainbows.

Thanks for watching,

Lewis

This video is recommended for anyone studying A Level Physics in the following exam boards:
AQA
CIE
Edexcel
Edexcel IAL
Eduqas
IB
OCR A
OCR B
WJEC

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