Phosphorescence is a specific 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 may be re-emitted at a lower intensity for up to several hours after the original excitation.

Commonly seen examples of phosphorescent materials are the glow-in-the-dark toys, paint, and clock dials that glow for some time after being charged with a bright light such as in any normal reading or room light. Typically the glowing then slowly fades out within minutes to up to a few hours in a dark room. (source : wikipedia)

The Incredible Power of Self-Love
Most of the communication you experience over your lifetime happens within yourself. People walk around with a constant stream of thoughts and feelings inundating their brain.

10 Weird Facts About Pregnancy
Pregnancy can be a beautiful time in a woman's life. The feeling of carrying another human being in your body is incomparable. But, during those 9 months, your body can go through some interesting changes, some of which you may not expect or understand. S

Amazing furniture made from wooden pallets
Did you have any idea that woo..

That mysterious extra pocket in your jeans
Here's the explanation for you

The top 3 biggest dog breeds
Most of us loves dog and some just can't them big enough.

5 Easy Tips for Getting Tack-Sharp Photos with Your Mobile Phone
Have you ever wondered why the..