Focal length

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Focal length by

Wikipedia Bot 0 1970-01-01

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Focal length by

Ciro Santilli 34 Updated 2024-11-19 Created 1970-01-01

If you pass parallel light.

For a biconvex spherical lens, it is given by:

\frac{1}{f} = n (\frac{1}{R _{1}} + \frac{1}{R _{2}})

where:

n: f nidnex

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