Quadratic curvature for algebraic curves (cont) | Differential Geometry 15 | NJ Wildberger

We continue in developing fundamental formulas that deal with curvature for surfaces in three dimensional space, given by algebraic equations. Our approach continues to be that the normal paraboloid to such a surface at a point is the key object that encodes the quadratic metrical information, including curvatures. However we want formulas that deal with the general situation, not only the simpler case when the tangent plane is horizontal.


[It appears this video has been unlisted lately, even though it is some years old! Better late than never to get it back out there ....]

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