Fluorescence is awesome (here is how it works)

Fluorescence is absolutely awesome.

The science behind it is very cool, absorbing UV light, exciting electrons, and releasing some of that energy as visible light.

Be careful, though, of the statement at 1:38, "this means that the objects are giving back more energy than they receive from the visible light source which explains their gleaming vibrancy under UV."

That statement is correct but sounds impossible at first. The statement says that the energy in the visible light range that they're giving off is more than the energy in the visible light range that they're absorbing. That sounds impossible until you understand that they are absorbing extra energy in the UV range that they're turning into visible light.

Here's a fun way to take advantage of fluorescence.