Fluorescent minerals emit visible light when exposed to ultraviolet. Fluorescence is one of two kinds of photoluminescence, the emission of light by a substance that has absorbed light or other electromagnetic radiation. When exposed to ultraviolet radiation, many substances will glow (fluoresce) with colored visible light.

2023年4月5日 · Fluorescence is a phenomenon where certain materials rapidly (around 10 -8 seconds) emit light when they are exposed to specific types of electromagnetic radiation, typically ultraviolet (UV) light. Fluorescent materials are those that can exhibit this characteristic.

The meaning of FLUORESCE is to produce, undergo, or exhibit fluorescence.

2025年1月30日 · Fluorescence, emission of electromagnetic radiation, usually visible light, caused by excitation of atoms in a material, which then reemit almost immediately (within about 10−8 seconds). The initial excitation is usually caused by absorption of energy from incident radiation or particles, such as.

The meaning of FLUORESCENCE is luminescence that is caused by the absorption of radiation at one wavelength followed by nearly immediate reradiation usually at a different wavelength and that ceases almost at once when the incident radiation stops; also : the radiation emitted.

2023年1月30日 · Fluorescence, a type of luminescence, occurs in gas, liquid or solid chemical systems. Fluorescence is brought about by absorption of photons in the singlet ground state promoted to a singlet excited state. The spin of the electron is still paired with the ground state electron, unlike phosphorescence.

Fluorescence is a member of the ubiquitous luminescence family of processes in which susceptible molecules emit light from electronically excited states created by either a physical (for example, absorption of light), mechanical (friction), or chemical mechanism.

FLUORESCE definition: 1. (of a material or a living creature) to absorb light of a short wavelength and produce light of…. Learn more.

2024年5月21日 · Fluorescence is an optical phenomenon that is manifested as glowing light. We observe it every day in the energy-saving compact fluorescent light bulbs that are used in many households and some types of glow sticks, but also in nightclubs as well.

Fluorescence (the name originates from the fluorescent mineral fluorspar) refers to cold light emission (luminescence) by electron transfer in the singlet state when molecules are excited by photons.