The video tutorial explains frequency as the number of waves passing a fixed point per second, represented by the symbol nu and measured in Hertz. It uses a pond example to illustrate how frequency is observed. The relationship between frequency and wavelength is explored by comparing two waves, A and B, showing that frequency is inversely proportional to wavelength. The tutorial concludes with the equation nu equals V divided by Lambda, where V is wave velocity, and discusses the speed of light.

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