Pendulum oscillation

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seen from Canada
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seen from Canada

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Pendulum oscillation
Silly captions only please.
Two 2D perspectives of a 3D plot of a motion of a ball on a string with alternating string length - shaping a motion track like a distorted "8"...
I am not finished. It's a rough sketch/doodle...It may have errors as well.
I might go into detail at explaining how I find the 3d coordinate points via my pen and paper and imagination method. This is a bit tricky. I will explain it once my focus and ability to form coherent thoughts and sentences is better again.
Understanding math through the act of drawing function plots is another level of satisfaction.
I could write a short script for the calculations of these parametric equations or choose between hundreds of other faster digital options, but I prefer the old-school method of pen and paper - also helps with my poor working memory - so, "two flies catched with one trap", as this idiom goes...
I love 3-dimensional function plots!
(Also: I often choose weird/unconventional ways to portray the concepts, often as result of spontaneous playing with patterns and accompanied occasional eureka-moments.)
Some quick 3d function plot
Title: "Schrödinger's cat chasing the transcending feedback-loop in the moon"
The ingredients:
- toroidal helix wire model
- a broken glass bowl
- lamp
- cat (not included)
Lamp + broken glass bowl:
Lamp + broken glass bowl + toroidal helix wire model:
... plus catto:
... plus catto in motion: