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Hair Variation, What’s Her Story? with Dr. Tina Lasisi

Getting Better with Jonathan Van Ness

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Curly Hair, Is It Really Curly?

Hairs curl in three dimensions, right? And we'retakng abt two dimensional thing. So the guy in the seventies, his name's daniel herd, he said, ok, let's flatten the hair between two glass slides, and then we're going to measure it. And basically what i did is say, ok, what if instead we cut the hairs into super, super small pieces, so that it only curves in one direction,. Then we'regoing to say that how much it curves in that tiny fragment, that's the curvature. If you imagine a circle, if you imagine a curl, right? You could fit a circle to it, or

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