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Puchinita5
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Homework Statement
"Calculate the reflection loss when a beam of radiant energy passes through an empty quartz cell assuming the refractive index of quartz is 1.55"
Homework Equations
I/I_i = ((n2-n1) / (n2+n1))^2
The Attempt at a Solution
I'm taking the refractive index through the empty cell to be 1 (is that right?)I/I_i = ((n2-n1) / (n2+n1))^2= ((1.55-1)/(1.55+1))^2 = 0.047 or 4.7%
The answer in the back of the book is 17.3 %
what am i doing wrong?