Lemniscat of Bernouilli.

Author:
sdreaves
Various tools for creating/observing the Lemniscat of Bernouilli. Suggestions of improvements welcome. Comments on suitability of this particular hyperbola are welcome. Question: will ANY hyperbola exhibit this characteristic - of embedded circles, centred upon it, describing the lemniscat?
tab between different views. Use this template to investigate similar properties of other hyperbolas.