Awasome What's A Black Light Used For 2023. When using a black light, follow these steps: Law enforcement officers can use them to identify counterfeit money.

It is perfect for detecting stains that are not visible to the human eye, allowing you to better clean a room, track an animal, or check for pet stains. The united states and many other countries include an invisible fluorescent strip in their larger bills that only shows up under a. What is a black light?