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Biology Honors
Photosynthesis
Lights and Pigments
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Sunlight
is made of each color.
Objects only absorb certain
colors
(
frequencies
).
Blue reflects
every
color
but
blue
and
absorbs
blue.
Black reflects
no
colors
and
absorbs
every
color.
White
reflects
every color and
absorbs
nothing.
Black
is the absence of light.
Pigments are
light
absorbing
molecules.
The
main
photosynthetic pigment is
chlorophyll.
Chlorophyll does not absorb
light
in the
green
spectrum.
Another pigment is
carotenoids.
Carotenoids do not absorb
yellow
,
orange
or
red
light.