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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.
The lowercase version of the Greek letter lambda (Î») is the standard symbol used to represent wavelength in physics and mathematics. The letter v represents velocity and Æ represents frequency.herefore, the wavelength of an A4 sound wave at 68Â° F is 343 m/s / 440 hz, which equals 0.7795 meters, or 77.95 cm. Waves in the electromagnetic spectrum, such as radio waves and light waves, have much shorter wavelengths than sound waves.