10 ms·
That's a question answered by the field of topology: genus 2. | | | +-- | +-- | | Look at it end on: __ //\\__ || ||_ \\// Now shorten
by karmakaze 5y ago
That's a question answered by the field of topology: genus 2.
| |
| +--
| +--
| |
Look at it end on:
__
//\\__
|| ||_
\\//
Now shorten the shaft of the right-facing hole so that it becomes a ring-hole on the right side of the end-on hole, then rotate it also so that it's an end-on view:
//\\//\\
|| || ||
\\//\\//
- drenvuk 5y agomade me go on a wikipedia dive. Thanks, I learned something.
- karmakaze 5y agoThe Vsauce video in sibling comment at 12:59 shows an animation from the two-rings to the T-shaped pipe, or even a better animation at 15:59. 12:59 https://youtu.be/egEraZP9yXQ?t=779 https://youtu.be/egEraZP9yXQ?t=779 15:59 https://youtu.be/egEraZP9yXQ?t=959 https://youtu.be/egEraZP9yXQ?t=959