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by
Ciro Santilli
(
@cirosantilli,
32
)
Focal length (f)
If you pass
parallel light
.
For a
biconvex spherical lens
, it is given by:
f
1
=
n
(
R
1
1
+
R
2
1
)
(1)
where:
n: f nidnex
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Focal length
by
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0
on
1970-01-01
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