${\displaystyle \lambda \ =B\left({\frac {m^{2}}{m^{2}-n^{2}}}\right)=B\left({\frac {m^{2}}{m^{2}-2^{2}}}\right)}$

Where

${\displaystyle \lambda }$ is the wavelength.

B is a constant with the value of 3.6456×10^-7 m or 364.56 nm.

n is equal to 2

m is an integer such that m > n.

${\displaystyle m=3,4,5,6}$