2022-11-8 How to find the size/diameter of a human hair?
The size/diameter of our human hair is very tiny, around 10-100 μm. In other words, a regular #2 pencil is about equivalent in size to a bunch of over 10 thousand hairs!!! To measure such a tiny thing, most of regular tools don’t help at all! However, spectroscopy can do a fantastic job here! What […]
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