luminescent screen - significado y definición. Qué es luminescent screen
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Qué (quién) es luminescent screen - definición

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]]

Screen (sports)         
  • Isaiah Hicks screens [[Jarell Martin]] and [[Marcus Lee]] for Chris Walker at the [[2013 McDonald's All-American Boys Game]].
BLOCKING MOVE BY AN OFFENSIVE PLAYER IN TEAM SPORTS
Screen (basketball); Pick (basketball); Set a screen; Screen-setter; Moving screen; Illegal screen
A screen is a blocking move by an offensive player in which they stand beside or behind a defender in order to free a teammate to either shoot a pass or drive in to score. In basketball and field lacrosse, it is also known as a pick.
rood loft         
  • Usual location of a rood screen
  • St Albans Abbey]]
  • Rood and beam of 1275, but no screen, at [[Öja Church]] on the island of [[Gotland]] in Sweden, where many exceptional roods have survived.
  • alt=
  • St. Helen's church, Ranworth]], Norfolk
  • Crucifixion atop Rood Screen, Anglo-Catholic [[Church of the Good Shepherd (Rosemont, Pennsylvania)]]
  • ambo]]s, left and right.
  • alt=
PARTITION BETWEEN THE CHANCEL AND NAVE FOUND IN MEDIEVAL CHURCH ARCHITECTURE
Altar-screen; Rood loft; Rood Screen; Screen, Altar; Chancel screen; Choir screen; Choir Screen; Rood beam; Choir-screen; Roodscreen; Rood-beam; Jubé; Rood-screen; Rude screen; Painted rood screen; Rood-loft; Chancel-screen
¦ noun a gallery on top of a rood screen.
rood screen         
  • Usual location of a rood screen
  • St Albans Abbey]]
  • Rood and beam of 1275, but no screen, at [[Öja Church]] on the island of [[Gotland]] in Sweden, where many exceptional roods have survived.
  • alt=
  • St. Helen's church, Ranworth]], Norfolk
  • Crucifixion atop Rood Screen, Anglo-Catholic [[Church of the Good Shepherd (Rosemont, Pennsylvania)]]
  • ambo]]s, left and right.
  • alt=
PARTITION BETWEEN THE CHANCEL AND NAVE FOUND IN MEDIEVAL CHURCH ARCHITECTURE
Altar-screen; Rood loft; Rood Screen; Screen, Altar; Chancel screen; Choir screen; Choir Screen; Rood beam; Choir-screen; Roodscreen; Rood-beam; Jubé; Rood-screen; Rude screen; Painted rood screen; Rood-loft; Chancel-screen
¦ noun a screen of wood or stone separating the nave from the chancel of a church.

Wikipedia

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".