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The study of how the properties of matter arise from its structure at all scales and of how processing can be used to modify those properties (often in pursuit of a specific application).
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Will cutting sand paper with scissors make the scissors sharper or duller?
The answer given by Duller is halfway correct.When the blade is very blunt , the point of contact is flattened or shapeless. When you cut sandpaper , it being abrasive itself it abrades the blunt edge …