Have you ever wondered how the first straight edge was made, without a straight edge?
Let Adam Savage (of Myth Busters fame) offer up an explanation using rocks.
You should watch up until 6:18 for the full explanation of how to rub, but feel free to watch the whole video if you want to know how a fractal vise [sic] works. The headline quote is at 8:17.
That’s it for this week, have a good weekend.
Clive
Clive Catton MSc (Cyber Security) – by-line and other articles
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