Phosphorescence is a type of photoluminescence related to fluorescence. Unlike fluorescence, a phosphorescent material does not immediately re-emit the radiation it absorbs. The slower time scales of the re-emission are associated with "forbidden" energy state transitions in quantum mechanics. As these transitions occur very slowly in certain materials, absorbed radiation is re-emitted at a lower intensity for up to several hours after the original excitation.
Everyday examples of phosphorescent materials are the glow-in-the-dark toys, stickers, paint, and clock dials that glow after being charged with a bright light such as in any normal reading or room light. Typically, the glow slowly fades out, sometimes within a few minutes or up to a few hours in a dark room. Wikipedia, phosphorescent
Keely
"The light that emanates from a glow worm is the resultant of the action of the sympathetic medium of the insect on a center of phosphorescent matter, which is included in its structure. The resultant of the two conditions are quite different, but they are governed by the same laws of sympathetic percussion." Snell Manuscript
Dr. Macvicar, in his theories of the bearing of the cosmical law of assimilation on molecular action, says: "During this retreat of matter into ether in single material elements or units of weight, the molecules and masses from which such vaporization into the common vapor of matter is going on, may be expected to be phosphorescent." This surmise Keely has, over and over, demonstrated as a fact, also showing how gravitation operates as a lever, etheric wave motion, concentration under vibratory concussion, and negative vacuous tenuity. [Snell Manuscript - The Book, page 2]
See Also
Echo
Regeneration
7B.09 - Luminiferous Ether or Light
aluminum
bioluminescence
celestial luminous
cold light
Cosmic Illuminates
crystalloluminescence
electricity luminous
etheric luminous
high luminous
Illuminate
illuminated revolving prism
Illumination
interluminous
invisible luminescence
light
luminiferous
Luminiferous Ether
Luminiferous Ether - Maxwell
luminiferous track
Luminon
luminosity
luminous
luminous field
luminous metallic expansion bullet
luminous one
luminous radiation
mechanoluminescence
over-illuminated
over-illumination
phos-elements
phosphorescence
phosphorescent
phosphorous
phosphorus
radioluminescence
reverse metamorphosis
Sonoluminescence
Walter Russells 39 days of Illumination