What is phosphorescence explain?

What is phosphorescence explain?

In simple terms, phosphorescence is a process in which energy absorbed by a substance is released relatively slowly in the form of light. This is in some cases the mechanism used for glow-in-the-dark materials which are “charged” by exposure to light.

What is phosphorescent in science?

Phosphorescence, emission of light from a substance exposed to radiation and persisting as an afterglow after the exciting radiation has been removed. The time spent in the metastable level, or electron trap, determines the length of time that phosphorescence persists.

What is a phosphorescent body?

Phosphorescence is light released by matter after exposure to electromagnetic radiation, usually ultraviolet light. Phosphorescence is one form of photoluminescence. Other common types of photoluminescence include chemiluminescence and fluorescence.

Is phosphorescent natural?

Besides a few natural minerals, phosphorescence is produced by chemical compounds. Probably the best-known of these is zinc sulfide, which has been used in products since the 1930s. Zinc sulfide usually emits a green phosphorescence, although phosphors may be added to change the color of light.

Why does phosphor glow?

When you have something like a toy that glows in the dark, it can glow because it contains materials called phosphors. Phosphors can radiate light after they have gotten energy from the sun or another source of bright light. The phosphors soak up the energy from the light, and then they radiate this energy as light.

Is phosphorescent glow in the dark?

Phosphorescent pigments will glow in the dark but only after being exposed to a light source, including sunlight or by placing under a light bulb.

Are phosphors toxic?

Phosphor is a chemically engineered powder that comes from various natural elements. It is not toxic and does not contain mercury. Phosphor does not contain the element phosphorus.

What is phosphorescence in the ocean?

Phosphorescence of the sea is a luminous glow emanating from millions of tiny marine organisms, mostly of the species known as Noctiluca miliaris. Phosphorescence is more frequent in coastal waters than in the middle of the ocean, and is to be seen at its most spectacular in the tropical oceans of the world.

What is the medical definition of phosphorescence?

Medical Definition of phosphorescence. 1 : luminescence that is caused by the absorption of radiation at one wavelength followed by delayed reradiation at a different wavelength and that continues for a noticeable time after the incident radiation stops.

What makes you want to look up phosphorescence?

1 : luminescence that is caused by the absorption of radiation at one wavelength followed by delayed reradiation at a different wavelength and that continues for a noticeable time after the incident radiation stops. 2 : an enduring luminescence without sensible heat. Comments on phosphorescence. What made you want to look up phosphorescence?

How is phosphorescence different from other types of light?

Phosphorescence, emission of light from a substance exposed to radiation and persisting as an afterglow after the exciting radiation has been removed. Unlike fluorescence, in which the absorbed light is spontaneously emitted about 10 -8 second after excitation, phosphorescence requires additional excitation to produce radiation…

How long does phosphorescence last after excitation?

Phosphorescence. Unlike fluorescence, in which the absorbed light is spontaneously emitted about 10 -8 second after excitation, phosphorescence requires additional excitation to produce radiation and may last from about 10 -3 second to days or years, depending on the circumstances.