holymoleculesbatman:

Europium Phosphor Fluorescence In White Energy Saver
“I got a surprise when put the beam from my UV laser pointer on a warm white “energy saver” fluorescent bulb—it glowed pinkish red! The phosphor coating inside contains various rare earth elements, and europium is probably the one doing the red fluorescing. The color of the beam itself is visible on the round stand below the bulb.”

holymoleculesbatman:

Europium Phosphor Fluorescence In White Energy Saver

“I got a surprise when put the beam from my UV laser pointer on a warm white “energy saver” fluorescent bulb—it glowed pinkish red! The phosphor coating inside contains various rare earth elements, and europium is probably the one doing the red fluorescing. The color of the beam itself is visible on the round stand below the bulb.”