Titanium dioxide. Coloured scanning electron microscope (SEM) of titanium dioxide, which occurs naturally in nature as the minerals rutile, anatase an


Titanium dioxide. Coloured scanning electron microscope (SEM) of titanium dioxide, which occurs naturally in nature as the minerals rutile, anatase and brookite, but can also be produced synthetically. It has a high refractive index and is used as a white pigment called titanium white and as a food colouring (E171). It is also used extensively in plastics and sunscreen, where it acts as a strong absorber of ultraviolet (UV) light. Magnification: x1170 when printed 10 centimetres wide.


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Photo credit: © EYE OF SCIENCE/SCIENCE PHOTO LIBRARY / Alamy / Afripics
License: Licensed
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