Ultraviolet radiations can be detected using___________


Ultraviolet radiations can be detected using fluorescence.


The emission of light by a material that has absorbed light or other electromagnetic radiation is known as fluorescence. It’s a kind of luminescence. In certain cases, the light emitted has a longer wavelength than the radiation absorbed, and thus has less energy.

  • When the absorbed radiation is in the ultraviolet range of the spectrum, that is invisible to the human eye, and the released light is in the visible region, the fluorescent material takes on a distinct colour that can only be observed when exposed to Ultraviolet light.
  • Unlike phosphorescent substances, that continue to emit light for some time after the radiation source is turned off, fluorescent materials stop glowing almost instantly when the radiation source is turned off.

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