Question

What causes it for a phosphorescence material to give light for a relative long time?

Answer 1

When a phosphorescence material is shined by a flashlight for say 1 minute it will start to glow right away and can last for let say an hour or so. That implies that some of the excited atoms are immediately falling back to their ground state while other seems to wait for that an hour or so. And it looks that the object is pretty equal shining. How can this occur

Answer 2

Then by either moving the wire or changing the magnetic field we can induce a voltage and current withinthe coil and this process is known as Electromagnetic Induction and is the basic principle of operation of