It emits green fluorescence when coexisting with calcium ions. This property has been used to observe the flow of calcium ions within cells in real time. The discovery of aequorin prompted further research into marine jellyfish and the discovery of green fluorescent protein (green. The mechanisms of fluorescence have applications in television, fluorescent lighting, and radiography. adjective [usually adjective noun] a fluorescent surface, substance, or color has a very bright appearance when light is directed onto it, as if it is actually shining itself.
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