History of the use of black lights?

Question

I want to know what the impact of using blacklights in a church for the sign team and what it will be on a congregation. also the history of the use of blacklights.were they used for things such as witchcraft?

Answer 1

Most of them will have flash backs to the 60's and 70's free love drug induced hippy life style and they will all be calling God like:

Hey man, you're cool man, like what a far out trip man.

Answer 2

Started in the '60's as an effect to use to heighten the effect of drug useage.