light produced by a substance that has absorbed light or other radiation, which has a longer wavelength than the light that has been absorbed

The compound emits blue fluorescence. 这种化合物发出蓝色的荧光。

the quality of absorbing light of a short wavelength and producing light of a longer wavelength

The mechanisms of fluorescence have applications in television, fluorescent lighting, and radiography. 荧光现象的原理被应用在电视、荧光照明和放射医学方面。