how do objects glow in the dark ?

Answer 1

Usually the objects contain phosphors...

phos·phor [fos-fer, -fawr]
–noun 1.any of a number of substances that exhibit luminescence when struck by light of certain wavelengths, as by ultraviolet.

"All glow-in-the-dark products contain phosphors. A phosphor is a substance that radiates visible light after being energized. "

"To make a glow-in-the-dark toy, what you want is a phosphor that is energized by normal light and that has a very long persistence. Two phosphors that have these properties are Zinc Sulfide and Strontium Aluminate. Strontium Aluminate is newer -- it's what you see in the "super" glow-in-the-dark toys. It has a much longer persistence than Zinc Sulfide does. The phosphor is mixed into a plastic and molded to make most glow-in-the-dark stuff."

or by a chemical reaction:

"Light is a form of energy, which can be emitted through a variety of processes. These processes include:

Incandescence - The emission of light due to heat (as in an ordinary light bulb or a gas lantern)

Fluorescence and phosphorescence - The emission of light in response to radiation energy (as in a fluorescent light bulb or a television)

Laser generation - The concentrated emission of light using stimulated emission."

"Light sticks are just one application of an important natural phenomenon -- luminescence. Generally speaking, luminescence is any emission of light that is not caused by heating. Among other things, luminescence is used in televisions, neon lights and glow-in-the-dark stickers. It's also the principle that lights up a firefly and makes some rocks glow after dark."

Answer 2

Hi. Some materials store energy chemically and release it when not being exposed to an energy source such as light. This energy can cause florescence. Of course a bed of coals glows in the dark by releasing energy too.

Answer 3

The Luminius objects can glow in the dark.Some fluorecent material and diamond stones have easy shine

Answer 4

fluorescent paint reacts to ultra violet radiation, or black light,
phosphorescent paint or glow in the dark paint has a sustained pale green color glow over a period of time,
radioluminescent paint has radio isotopes combined with a radio luminescent substance in the paint,used or watches or aircraft instruments

Answer 5

the electrons in the materiel absorb the energy from the light, and jump up an energy level, and once the light is gone more energy ( in the glowing light form) is emitted from the electrons returning to their original energy level.

Answer 6

They generate or reflect light by some process.

Answer 7

beacuse it has more heat and maybe it reflects light in a distance place

Answer 8

its a certain kind of paint that they use
you could buy it at michale's or any craft shop