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I would like to use the 'cauchy dispersion formula', ie (http://en.wikipedia.org/wiki/Cauchy's_equation):

eta = A + B / w²

Where :

eta is the resulting IOR

A is the base IOR

B is the dispersion coefficient expressed in squarre meter (m²)

w is wavelength expressed in micro-meters

I try to apply this formula this way :

B = 0.013 in micro-meters,

A = 1.72

So first,

1) I convert the B parameter from micro-meter to m² : B = B / 1000000

2) I convert my wavelenght from nm to micro-meter : wv = 500 / 1000

But the result I got seems incorrect, I got no dispersion !!!

Maybe there is a problem with my units ?

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# Cauchy dispersion formula

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