luminescent pigment - ορισμός. Τι είναι το luminescent pigment
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Τι (ποιος) είναι luminescent pigment - ορισμός

EMISSION OF LIGHT BY A SUBSTANCE NOT RESULTING FROM HEAT
Luminescent; Luminesces; Luminescent measurements; Luminise; Luminising; Luminiscent microsphere; Light-emitting material; Light-emitting materials; Luminescent microsphere
  • UV-photoluminescence in microbiological diagnostics
  • haemoglobin]], an example of [[chemiluminescence]]

Photosynthetic pigment         
  • [[Electromagnetic spectrum]] – wavelengths in metres}}
PIGMENT THAT IS PRESENT IN CHLOROPLASTS OR PHOTOSYNTHETIC BACTERIA AND CAPTURES THE LIGHT ENERGY NECESSARY FOR PHOTOSYNTHESIS
Photosynthetic Pigments; Antenna pigment; Antenna pigments; Light harvesting pigment; Photosynthetic pigments; Photosynthetic antenna molecule; Light-harvesting pigment; Pigments in Chloroplast; Draft:Pigments in Leaves; Draft:Pigments in Chloroplast; Draft:List of pigments in chloroplast
A photosynthetic pigment (accessory pigment; chloroplast pigment; antenna pigment) is a pigment that is present in chloroplasts or photosynthetic bacteria and captures the light energy necessary for photosynthesis.
Earth pigment         
  • A range of pigments were mined by [[Indigenous Australians]] at this Ochre Pit in central [[Australia]].
NATURALLY OCCURRING MINERALS USED AS PIGMENTS
Clay earth pigment
Earth pigments are naturally occurring minerals containing metal oxides, principally iron oxides and manganese oxides, that have been used since prehistoric times as pigments. The primary types are ochre, sienna and umber.
pigment         
  • Sunlight encounters Rosco R80 "Primary Blue" pigment. The product of the source spectrum and the reflectance spectrum of the pigment results in the final spectrum, and the appearance of blue.
  • Phthalo Blue]]
  • Natural [[ultramarine]] pigment in powdered form
  • A wide variety of wavelengths (colors) encounter a pigment. This pigment absorbs red and green light, but reflects blue—giving the substance a blue-colored appearance.
  • Synthetic ultramarine pigment is chemically identical to natural ultramarine
MATERIAL THAT CHANGES THE COLOR OF REFLECTED OR TRANSMITTED LIGHT
Pigmentation; Pigments; Natural pigment; Lake (dyeing); Pigment (material); Paint pigment; Pigments, biological; Synthetic pigment; Paint colour; Paint colours; Organic pigment
¦ noun
1. the natural colouring matter of animal or plant tissue.
2. a substance used for colouring or painting, especially a dry powder which constitutes a paint or ink when mixed with oil or water.
¦ verb [usu. as adjective pigmented] colour with or as if with pigment.
Derivatives
pigmentary adjective
pigmentation noun
Origin
ME: from L. pigmentum, from pingere 'to paint'.

Βικιπαίδεια

Luminescence

Luminescence is the "spontaneous emission of radiation from an electronically excited species (or from a vibrationally excited species) not in thermal equilibrium with its environment", according to IUPAC definition. A luminescent object is emitting "cold light", in contrast to "incandescence", where an object only emits light after heating. Generally, emission of light is due to the movement of electrons between different energy levels within an atom after excitation by external factors. However, the exact mechanism of light emission in "vibrationally excited species" is unknown, as seen in sonoluminescence.

There are various ways to make an object emit light, such as by light (photoluminescence), chemical reactions (chemiluminescence), electrical energy (electroluminescence), ultrasound vibrations (sonoluminescence), and by ionising radiation (radioluminescence).

The dials, hands, scales, and signs of aviation and navigational instruments and markings are often coated with luminescent materials in a process known as "luminising".