23" x 35" inches
Series & Type:
Black Light Poster
Condition: Mint - This is a brand new item.
Additional Products: This is just one of the many posters we have to offer.
What you see glowing under a black light, whether on a fluorescent poster or
invisible hand stamp
or a newly washed white T-shirt, are phosphors.
A phosphor is
any substance that emits visible light in response
to some sort of
radiation. A phosphor converts the energy in the UV radiation
from a black light into visible light.