UV (ultraviolet) light is an integral tool in currency verification, thanks to its ability to reveal invisible security features embedded in genuine banknotes. Understanding the science behind UV light and its practical applications in detecting counterfeit money can help businesses and individuals protect themselves from fraud. 1. The Science Behind UV Light Ultraviolet light is electromagnetic radiation with a wavelength shorter than visible light but longer than X-rays. It is categorized into three types: Type Wavelength Range Applications UV-A 315-400 nm Currency verification, forensic analysis, and tanning lamps UV-B 280-315 nm Skin treatment and sterilization UV-C 100-280 nm Germicidal purposes, [...]