Here Simon explains one more effect he has played with at home, the Magnus effect.
Simon has been studying energy units such as C (coulombs), V (volts) and J (joules), and the relation between them.
This is one of the best video tutorials he found on the topic, by the way made by the SparkFun crew:
He has also been busy with the different sorts of energy:
Today he showcased his passion to the math tutor: