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Photochromism is the
reversible change of
color upon
exposure to light. It is a
transformation of a
chemical species (photoswitch)
between two
forms through...
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Photochrom, Fotochrom,
Photochrome or the Aäc process[citation needed] is a
process of hand-colouring
photographs from a
single black-and-white negative...
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other one the ring is opened. The
photochromism is
arises from
electrocyclic cleavage of the C-spiro-O bond.
Photochromism is the
phenomenon that produces...
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caused by heat,
light or pH,
resulting in
examples of thermochromism,
photochromism and halochromism, respectively.
Irreversible transformations typically...
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optically pumped lasers,
sensitized solar cells, luminescence, and
photochromism.
Electron excitation is the
movement of an
electron to a
higher energy...
- Edo, 1865 or 1866.
Photochrom print. Five
albumen prints joined to form a panorama. Photographer:
Felice Beato....
- a
change of temperature. This is the most
common chromism of all.
photochromism is
induced by
light irradiation. This
phenomenon is
based on the isomerization...
- ZEISS,
Serengeti Eyewear, and
Persol provide tinted lenses that use
photochromism to go from a dark to a
darker state. They are
typically used for outdoor...
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American photographic publishing firm best
known for its
large ****ortment of
photochrom color postcards. The
Detroit Publishing Company was
started by publisher...
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Photochrom of the
Blackpool promenade c. 1898...
