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this post was submitted on 04 May 2025
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Asklemmy
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Whether apple stems are perpendicular or parallel to the surface of the fruit.
Incidental Tangent to the surface where the stem starts.
At the deepest part where it surrounds stem tightly there will be an instant tangent which then immediately becomes non tangent. A G0 and G1 condition and not G2
Doesn't matter, the point where stem and dimple are deepest and encapsulated would have same vector direction initially. Topology doesn't need to be cylindrical to have vectors
I don't have a dog in the race. I just think you are two big dorks and I love this discussion. I want at least a 20 minute YouTube video of the correct answer and why the other is wrong!
Well you are in luck. No video but images of analysis. Hedgehog plot of normal vectors, they converge to flat at stem base. Hard to see since the stem/dimple share space.
Confirmation of immediate angle at stem base
Slope plot. Green being 0 degrees from up vector.
Dimple hole showing its not a cylindrical stem
Stem slope, green being immediate 0 vector
I'm on a trip so won't have access to my CAD analysis tools, so no video I'm afraid.
Considering that it was about topology, that might very well be the smartest couple's dispute I've ever heard of.
Now, that's an interesting discussion!
Is the answer not both? Depending on what part of the stem?
No thats totally fair argument.