one interesting thing is that this bisection of a toroid is eerily similar to leon chua's (http://en.wikipedia.org/wiki/Leon_Chua http://en.wikipedia.org/wiki/L

one interesting thing is that this bisection of a toroid is eerily similar to leon chua's (http://en.wikipedia.org/wiki/Leon_Chua http://en.wikipedia.org/wiki/Leon_Chua) model postulating the existence of the memristor. in it, capacitance, induction and resistance are at three cardinal directions around a toroid and he supposed that something must exist at the fourth.