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FluoresceinFluorescein Flu`o*res"ce*in, n. (Chem.)
A yellowish red, crystalline substance, C20H12O5, produced
by heating together phthalic anhydride and resorcin; -- so
called, from the very brilliant yellowish green fluorescence
of its alkaline solutions. It has acid properties, and its
salts of the alkalies are known to the trade under the name
of uranin. Fluorescence
Fluorescence Flu`o*res"cence, n.
A property possessed by fluor spar, uranium glass, sulphide
of calcium, and many other substances, of glowing without
appreciable rise of temperature when exposed to light or to
ultra-violet rays, cathode rays, X rays, etc.
FluorescenceFluorescence Flu`o*res"cence, n. [From Fluor.] (Opt.)
That property which some transparent bodies have of producing
at their surface, or within their substance, light different
in color from the mass of the material, as when green
crystals of fluor spar afford blue reflections. It is due not
to the difference in the color of a distinct surface layer,
but to the power which the substance has of modifying the
light incident upon it. The light emitted by fluorescent
substances is in general of lower refrangibility than the
incident light. --Stockes. Fluorescent
Fluorescent Flu`o*res"cent, a.
Having the property of fluorescence.
Meaning of Fluoresce from wikipedia
-
fluoresce differently under short-wave ultraviolet, long-wave ultraviolet,
visible light, or X-rays. Many
types of
calcite and
amber will
fluoresce under...
- bullae. The
quinine in
tonic water will
fluoresce under ultraviolet light. In fact,
quinine will
visibly fluoresce in
direct sunlight against a dark background...
-
water with a
violet laser (left)
illuminating both.
Typically quinine fluoresces blue,
which is
visible in the
right sample. The left
sample contains chloride...
- of po****r rock
bands and artists.
Blacklight posters are
designed to
fluoresce or glow
under a
black light (ultraviolet light).
Pinup posters, "pinups"...
-
intracellular lipid droplets yellow. In most
polar solvents, Nile red will not
fluoresce; however, when in a lipid-rich environment, it can be
intensely fluorescent...
- short-wave
ultraviolet light,
which then
causes the
phosphor in the tube to
fluoresce,
making visible light.
Mercury is a heavy, silvery-white
metal that is...
-
itself (which does not
fluoresce), but
rather an
excretory product of the
fungus which sticks to hairs.
Infected skin does not
fluoresce.
Microscopic test:...
- pale
violet or rose Z = violet. 2V
angle 56–84°
Fusibility 2
Other characteristics Some
specimens fluoresce; many more
fluoresce after heating References...
-
Cells engineered to
fluoresce under UV light....
-
Ultraviolet fluorescence None (some fracture-filling
materials used to
improve emerald's
clarity do
fluoresce, but the
stone itself does not) References...