I do not think you can name many great inventions that have been made by married men.
Imagination is more important than knowledge.
Cool Physics Technique
Does this use up the battery?
is this how electric brush motors work? the concept has always confused the shit out of me
What is the thing the battery is sitting inside? I’d love to make this with my son.
Edit: [Nevermind, found it online. It’s a magnet.](https://www.youtube.com/watch?v=cBY_2ABINVg)
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