Greg Egan on Nostr: A complete globe of the world made from a material that can be bent but not stretched ...
A complete globe of the world made from a material that can be bent but not stretched or sheared (thus preserving local distances and angles) will be rigid — but if you cut out large enough portions at high latitudes, what remains can be reshaped so the equator becomes an ellipse.
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"content":"A complete globe of the world made from a material that can be bent but not stretched or sheared (thus preserving local distances and angles) will be rigid — but if you cut out large enough portions at high latitudes, what remains can be reshaped so the equator becomes an ellipse.\n\nhttps://media.mathstodon.xyz/media_attachments/files/112/573/380/251/264/238/original/e6b1f2d8870ba611.mp4",
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