Functional ceramics and its applications
R. H. Rakhimov
Broschiertes Buch

Functional ceramics and its applications

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The term "light" is not just supposed to mean the light we can see, from red to blue. Visible light is only part of a long scale, analogous to a musical sound scale, in which there are notes both higher and lower than we can hear. The light scale can be described using numbers called frequencies. As the frequency increases, light changes from red to blue to violet to ultraviolet. We can't see ultraviolet light, but it affects our skin, its high intensity can cause burns, it produces vitamin D in living organisms and ozone in the atmosphere. This is also light - just in a different frequency ra...