Fluorescence and Luminescence

This is a video of a demonstration with our fifth grade class while studying various physical and chemical properties of matter. Fluorescence is a property that describes a substance’s ability to give off light in response to external radiation. Solutions containing chemicals like fluorescein and rhodamine B will glow in the presence of ultraviolet radiation. Luminescence, on the other hand, is a substance’s ability to emit light through a chemical reaction. In this demonstration, luminol reacts with hydrogen peroxide to produce blue light.

Chemical Fluorescence (Photo Gallery)

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Fluorescence is a property of some substances that allow them to emit light in response to certain types of external radiation. Using a UV lamp, we were able to create amazing fluorescent displays with solutions of fluorescein (yellow / green), rhodamine B (pink), and quinine (blue). By combining these three fluorescent chemicals, we were able to create a variety of brilliant fluorescent colors.