This is a scanning electron micrograph of a human hair etched by irradiation with an ArF excimer laser; the notches are 50 m wide. Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy ...
A wooly coat and a head of human hair have more in common than you think; not only do they help retain body heat, they’re both made from keratin protein fibers. Now, a Dutch startup is questioning why ...
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