how the radium stickers will glow
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Phosphors radiate visible light after being energized. This means you have to expose the items to light for a while before they will glow in the dark. Phosphors then slowly release their stored energy over time. As they release the energy, they emit small amounts of light, which we see as an objectglowing.
sami61:
we can keep in sun light also
yes...
how many hours
1-2 hrs..
kk tq
yup... no prob
Answered by
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Hi,
First of all, these conventional stickers do not contain Radium, since it is a highly radioactive element and fatal to come in contact with. These stickers contain phosphorescent materials; i.e. materials which absorb light and re-radiate it (at a lesser energy or longer wavelength) after a period of time (which spans over a couple of hours) to give that glow-in-the-dark effect.
First of all, these conventional stickers do not contain Radium, since it is a highly radioactive element and fatal to come in contact with. These stickers contain phosphorescent materials; i.e. materials which absorb light and re-radiate it (at a lesser energy or longer wavelength) after a period of time (which spans over a couple of hours) to give that glow-in-the-dark effect.
we can keep these stickers in sun light
can u any reason
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