What are things that are fluorescent?

Fluorescent materials absorb light at one wavelength and emit it at a longer wavelength, resulting in bright, glowing colors. Common examples include fluorescent lights, highlighter inks, certain minerals, and some types of paints. Additionally, many biological substances, such as chlorophyll and certain proteins, exhibit fluorescence under UV light. Fluorescent markers are often used in various applications, including art, safety signage, and scientific research.