Vector Calculus 24: The Principal Normal and Curvature of a Planar Curve

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What a brilliant explanation! I have watched hundreds of your videos, and I just wanted to say: Thank You very much! You are the best teacher I've ever seen.

gucker
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I love this way of treating vectors on their own terms so much, I watched this series and moved to the tensor series. My copy of your tensor book is on its way! Any advice before reading that?

alegian
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Sitting back and enjoying, as you said. Thank you for this excellent work. The other playlists on Linear Algebra etc, are really awesome too. (Keep the tripod away from your unruly students so they don't kick it. ;)

squarerootof
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I enjoy your videos, some of them in this playlist (maybe in others too) are unlisted though. More might find them if you don't unlist them

Oliver-cnxx
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If I zoom in enough, all curves become straight line. Therefore, derivatives of unit tangent vector becomes zero. I am confused a little bit.

ardaozuzun
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Is this really limited to planar curves as the title suggests ?

joluju