Last Updated：2022/12/22
Sentence
We
know,
from
looking
at
an
infrared
image
of
a
cat,
that
many
things
emit
infrared
light.
But
many
things
also
reflect
infrared
light,
particularly
near
infrared
light.
Near
infrared
radiation
is
not
related
to
the
temperature
of
the
object
being
photographed
-
unless
the
object
is
very,
very
hot.
"The
Infrared"
from
The
Electromagnetic
Spectrum
(National
Aironautics
and
Space
Administration,
United
States
Government).
https://web.archive.org/web/20060114051647/http://imagers.gsfc.nasa.gov/ems/infrared.html
Quizzes for review
We know, from looking at an infrared image of a cat, that many things emit infrared light. But many things also reflect infrared light, particularly near infrared light. Near infrared radiation is not related to the temperature of the object being photographed - unless the object is very, very hot. The Infrared
from The Electromagnetic Spectrum (National Aironautics and Space Administration, United States Government). https://web.archive.org/web/20060114051647/http://imagers.gsfc.nasa.gov/ems/infrared.html
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