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Tim finds further uses for split rings, or key rings as they are often called.
First, the Hopf Fibration. Discovered by the German mathematician Heinz Hopf in 1931, it describes a '3-sphere (a hypersphere in four-dimensional space) in terms of circles and an ordinary sphere. See en.wikipedia.org/wiki/Hopf_fi...
Using key rings, it is possible to mimic part of the Hopf Fibration.
Next, a puzzle. Can you balance 12 split rings on the point of a nail? The solution involves connecting two rings with the nail, in such a way that you can balance the rest of the rings on top.
Finally, a puzzle which could use these key rings, or coins would work just as well. Tim learned this trick when he was 12 years old! Watch as Tim shows you how to do the trick.
17 апр 2021
