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Numerical aperture
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Mathematics
Fields of mathematics
Arithmetic
Numbers
Dimensionless numbers
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Numerical aperture
(NA) is
a
dimensionless figure that characterizes the range of
angles
over which
a
lens
can accept or emit
light
. It is
a
critical
parameter
in
microscopy
and
optics
, particularly when discussing the resolution and
light
-gathering
ability
of lenses.
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Dimensionless numbers
Numbers
Arithmetic
Fields of mathematics
Mathematics
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