why is lambda used for wavelength
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.