Let `lambda_(alpha'), lambda_(beta),and lambda'_(alpha)` denote the wavelength of the X-ray of the `K_(alpha), K_(beta), and L_(alpha)` lines in the characteristic X-rays for a metal. Then.

If lambda_(K_(alpha)), lambda_(K_(beta)) and lambda_(L_(alpha)) are the wavelengths of K_(alpha), K_(beta) and L_(alpha) , lines respectively , then

If lambda_(alpha), lambda_(beta) and lambda_(gamma) are respectively the wavelength of k_(alpha), k_(beta) and k_(gamma) lines of tungsten then

If lamda_(K_(alpha)),lamda_(K_(beta)) and lamda_(L_(alpha)) are the wavelengths of K_(alpha),K_(beta) and L_(alpha) lines, then

lambda_(alpha)/lambda_(beta) in Balmer series is

In X-ray experiment K_(alpha),K_(beta) denotes

In the X-rays produced by a Coolidge tube let lambda_(C) be the cut-off wavelength , lambda_(alpha) be the wavelength of the K_(alpha) line and lambda_(beta) be the wavelength of the K_(beta) the.