In conformal geometric algebra, the dot product between two spheres s and t gives the product of their radii times the cosine of the angle 𝜙 between the tangent planes where they intersect.

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• URL: https://x.com/EricLengyel/status/1808021741660430544
• Author: Eric Lengyel (@EricLengyel)
• Posted: 2024-07-02 06:15:49

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1/ @EricLengyel

In conformal geometric algebra, the dot product between two spheres s and t gives the product of their radii times the cosine of the angle 𝜙 between the tangent planes where they intersect. If the spheres don’t actually intersect, then this angle is imaginary.

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