The Building Blocks of Opal Explained
January 15th, 2010 // 7:11 pm @ admin
Silicon Dioxide or “Silica” is an oxide of Silicon. Under a scanning electron microscope, silica looks like tiny spheres. Although they range in size and shape naturally, the image below shows silica that is extremely uniform. Imagine trying to stack these little spheres into a pyramid. Because they are the same size and shape it [...]
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