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Wavelength is commonly designated by the Greek letter lambda (Î»). The concept can also be applied to periodic waves of non-sinusoidal shape. The term wavelength is also sometimes applied to modulated waves, and to the sinusoidal envelopes of modulated waves or waves formed by interference of several sinusoids.here L is the slit width, R is the distance of the pattern (on the screen) from the slit, and Î» is the wavelength of light used. The function S has zeros where u is a non-zero integer, where are at x values at a separation proportion to wavelength.
To what frequency does 500 nm correspond? Use the relation between frequency and wavelength, which is lambda*f = speed of light. This results in 600 Terahertz, which is the frequency of green light. This is no coincidence that green light at the center of our visible light rainbow, and is also the maximum frequency of the sun's emissions. Our eyes evolved to see the colors most abundant on Earth due to the sun, because those were the important colors for humans to see in order to survive.