484, APPENDIX. 
v corresponding to discharge voltages of 13, 21.5 and 30 kilovolts. The 
following relations have been found to hold good :— 
cv (n—2) =C : : (3) 
The Law of Disturbance. 
and 
__ (n—2)' 
= in A : ‘ : : (4) 
The Law of Excitation to 
Emission of Light. 
n= 3, 4, 5, etc., for Hx, Hs, Hy, etc., namely the quantum numbers. 
In (3) and (4) A and C are independent of velocity and wave-length. 
Substituting for c and J, values from (3) and (4) in (1), one gets 
(hy)? DP 
6 <a A°(n = 2)? v ae D° : i : ©) 
p(n — 2) 
Here are 
A=A°/p. 
D°/p = D=C- 2a (2x =") 
The full significance of 5 has been illustrated with diagrams. 
