What is fluorescence?
Q: What is fluorescence?
A: Fluorescence is the light given off by certain substances when it absorbs light or other electromagnetic radiation.
Q: What happens when a substance fluoresces?
A: When a substance fluoresces, it first absorbs energy and then emits light.
Q: Does fluorescence continue to occur after the light source is removed?
A: No, fluorescence stops occurring once the light source is removed.
Q: Is fluorescence a form of luminescence?
A: Yes, fluorescence is a form of luminescence.
Q: How does the wavelength and energy of the light given off during fluorescence compare to the absorbed light?
A: In most cases, the light given off during fluorescence has a longer wavelength and lower energy than the absorbed light.
Q: What is an example of a surprising type of fluorescence?
A: One surprising type of fluorescence is when a substance absorbs ultraviolet light that cannot be seen by the human eye, but gives off visible light.
Q: In what fields is fluorescence used?
A: Fluorescence is used in many fields such as mineralogy, gemology, chemical sensors (fluorescence spectroscopy), dyes, biological detectors, and fluorescent lights.
