Fluorescence has many practical applications, including mineralogy, gemology, medicine, chemical sensors (fluorescence spectroscopy), fluorescent labelling, dyes, biological …

fluorescence（荧光）是英语名词，指物质吸收光或其他辐射后，原子或分子跃迁至激发态并发出发光现象，激发停止后荧光随即消失，其激发态平均寿命短于10⁻⁸秒。

Nov 18, 2025 · 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 …

UV radiation is often used in visible spectrophotometry to determine the existence of fluorescence in a given sample. When submitted to UV light, the image seems to dim the natural …

The phenomenon of fluorescence was known by the middle of the nineteenth century. British scientist Sir George G. Stokes first made the observation that the mineral fluorspar exhibits …

Apr 5, 2023 · Fluorescence is a phenomenon where certain materials rapidly (around 10 -8 seconds) emit light when they are exposed to specific types of electromagnetic radiation, …

熒光 （英語： fluorescence）是 光致 冷发光 现象，可以在气体、液体或固体化学体系中发生。 当某种常温物质分子在 单重基态 吸收某种波长的入射光（通常是 紫外线 或 X光）后被激发至 …

Fluorescence occurs when an atom or molecules relaxes through vibrational relaxation to its ground state after being electrically excited. The specific frequencies of excitation and …

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 …

Fluorescence is the result of a three-stage process that occurs in certain molecules (generally polyaromatic hydrocarbons or heterocycles) called fluorophores or fluorescent dyes (Figure 1). …