This kind of stuff is what inspires me to go back to school and get a grad degree in…Math? Geometry?
The video is rather lengthy but its put into steps via simple animations so as to understand fully the process for inverting a sphere composed of a theoretical material that can infinitely pass through itself, bend, stretch and twist but cannot be pinched, torn, cut, or pierced.
[UPDATE – per a reader’s request/inquiry]
Not Knots – part 1
Not Knots – part 2