And when was it invented?
Dunno exactly but I found the earliest use of a spring in a timekeeping device was sometime before 1430. For all I know the spring was invented LONG before this and it wasn’t till this time that someone thought to use it in a clock (or springs reliable could be made) but it narrows the search somewhat.
THis site gives a somewhat different date for a spring powered clock.
Ok…best I could find. Understand that there are a lot of “springs” out there of which the kind that look like a spring on the wheels of your car are just one. Springs were originally made from wood it seems.
The Bronze Age is a bit vague as different parts of the world entered the Bronze Age at different times. Far East was around 3300 BC while the British Bronze Age started around 2200 BC.
The spring seems to have been invented sometime in the Oligocene, roughly 30 million years ago, when general global cooling began to produce pronounced seasonal changes in the temperate zones. I don’t know who invented it, though.
It was invented just after winter, wasn’t it?
Water running out of the ground did not need to be invented. Perhaps “discovered” is a better word.
Ancient Greek helmet with springs attached, about 5th c. BC