Q. The hydrogen spectrum is found by collimating the light from a hydrogen discharge tube and shining it on a grating to disperse the light into its various colors. The grating spacing is d = 3.377 μm. A bright red line (m=1) is seen at an angle of 11.233º from the center of the spectroscope. A) What is the wavelength of this spectral line? B) Assuming this line is from a transition from level n1 = 3 to level n2 = 2 (i.e. the longest wavelength Balmer series transition), what do you calculate for the value of the Rydberg constant?