UniCalc
RU
full version
Own formula
Calculation
Catalog
About
Help
Find a formula
Interference
Thin films
optical ray path difference by normal incidence
δ =
m
x
Å
nm
μm
mm
cm
dm
m
km
n mile
in
ft
yd
thickness of film
d =
m
x
Å
nm
μm
mm
cm
dm
m
km
n mile
in
ft
yd
refractive index of film
n =
wave length
λ =
m
x
Å
nm
μm
mm
cm
dm
m
km
n mile
in
ft
yd
1. Define values of all variables, besides sought quantity
2. Change units if necessary
3. Click "Calculate"
