- #1
tan-X1
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After I read many articles about measuring film thickness by interference method.
I tried to calculate flow that papers but I can't
the equation is
d= (y1*y2)/(2*(n1y2-n2y1))
for an easy I approximate n1 =n2
so
d= (y1*y2)/(2*n(y2-y1))
y1 = 350 nm
y2 = 380 nm
n = 2.35
I want to find out "d"
it seems to be easy
but I always get d = 944 nm
unfortunately, it's wrong
d have to be 472
that means I forgot to divide 2 in this eq.
however, the eq use to be right.
I don't know what's wrong in my calculation.
I tried to calculate flow that papers but I can't
the equation is
d= (y1*y2)/(2*(n1y2-n2y1))
for an easy I approximate n1 =n2
so
d= (y1*y2)/(2*n(y2-y1))
y1 = 350 nm
y2 = 380 nm
n = 2.35
I want to find out "d"
it seems to be easy
but I always get d = 944 nm
unfortunately, it's wrong
d have to be 472
that means I forgot to divide 2 in this eq.
however, the eq use to be right.
I don't know what's wrong in my calculation.