This clock is a great example of taking a very simple mechanism and making it a lot more interesting using a bit of ingenuity. The Tide Clock uses an ordinary circular clock mechanism, and adds a linkage to make an indicator slide up and down. As the indicator reaches the top or the bottom, it slows down; towards the middle of its travel, it speeds up.

This is, as its creator explains, the sine function at work, and it’s also exactly how the tides move.

Tide clock rear view

From HackSpace magazine store


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