The passage of time has had a lot of attention lately–which makes this the ideal time to honor the clock. The earliest timekeeping device, used as far back as 3,500 B.C., was a vertical stick that casts a shadow. As the sun crossed the sky, the shadow moved; by measuring its movement, the ancients could …
Tag: mechanics
Climate control
Humans (at least, this human) are creatures of comfort; and the story of civilization is, to a certain extent, the quest to keep from being either too hot or too cold. The earliest form of climate control was the fire. Room temperature was controlled by adding (or having the servants add) more wood or coal …
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