UPJOKE
fluorescent lampfluoritephotonphosphorescencewavelengthultravioletelectronstokes shiftstrawflowermarsh marigolddyequinineeuropiumfluorophorelight

At first, I was skeptical about replacing my florescent bulbs with newer LED ones...

But once I did, I started seeing things in new light.

The Golfball That Cannot Be Lost

Two friends went out to play golf and were about to tee off, when one fellow
noticed his partner had only one golf ball.

"Don't you have at least one other golf ball?" he asked. The other guy
replied that he only needed one.

"Are you sure?" the friend persisted. "What happens if ...

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