h = 6.62607004 * 10 ^ (-34)
E = 66 * 1.60218 * 10 ^ (-16)
f = E / h
c = 2.99792458 * 10 ^ 8
Lambda = c / f
Ry = 1.09737316 * 10 ^ 7
Z = 2 / Sqr(3 * Lambda * Ry) + 1
n1 = 1
n2 = 2
Z = 1 / Sqr((1 / n1 ^ 2 - 1 / n2 ^ 2) * Lambda * Ry) + 1
MsgBox Z
MsgBox Sqr(66000 / 10.2) + 1