Fluorescence

Fluorescence is the emission of light by a substance that has absorbed light or other electromagnetic radiation of a different wavelength. This process typically involves the absorption of a high-energy photon, followed by the emission of a lower-energy photon, resulting in a change in the wavelength of the light. The duration of this emission is typically very short, occurring almost instantly after the initial absorption. This phenomenon is widely used in various scientific and technological applications, including microscopy, medical diagnostics, and lighting.

Fluorescence meaning with examples

• The glowing jellyfish exhibited remarkable fluorescence, emitting a vibrant green light under the ocean's dark conditions. Scientists were studying the fluorescent proteins to understand the mechanisms and evolution of this bioluminescence. This natural process fascinated researchers.
• In biomedical imaging, fluorescent dyes are attached to antibodies or other molecules to visualize specific cellular components or processes, allowing researchers to map how cells interact with each other. The application of fluorescence offers a clear contrast for analysis.
• The use of fluorescent lamps relies on the principle of fluorescence. Ultraviolet light generated inside the lamp excites a phosphor coating on the inside of the glass, causing it to emit visible light, which provides energy efficiency.
• During quality control of minerals, fluorescent properties can be used for identifying and assessing their composition, providing data on how light influences their chemical structure. Gemologists use this to see natural properties.
• Art conservationists sometimes use fluorescence to detect alterations or restoration attempts on artworks. They use the reaction of UV rays with the object to highlight differences in pigment or to identify hidden details.