Whether it be a YouTube video or book lights rays i.e(the visible specturm,uv rays) are expressed as a sine wave. Why is it so? What is the plot of its against? Why does it oscillate? Why does it have wavelength? Why does it have frequency ? Does light really travel as a sine wave?
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1Do these answer your question? Why is electromagnetic wave (light) a sine wave?, Questions regarding light being depicted as a sine wave,Why do we think of light as a wave?, How to picture wave nature of light?. – David Bailey Mar 08 '24 at 14:10