From the sundial to the autonomous clock
The only real clock is the sky, movement of the Sun between sunrise and twilight. This movement can be copied with an engine that rotates at the same speed and, better still, the Sun itself can rotate the movement forming its curve from east to west.
From the sundial to the autonomous clock
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Buletina
Bidali zure helbide elektronikoa eta jaso asteroko buletina zure sarrera-ontzian