Stone to Silicon

Tools & manufacturing · c. 250 BCE

Screw

A helix turns rotation into steady lifting or pressing force.

The water-lifting screw is attributed to Archimedes in the 3rd century BCE, and screw presses for olives and grapes followed. The screw later became the fastener and the lead screw of machine tools.

See it in the living treeWikipedia

Arcs above join it to what it stood on, arcs below to what it led to. The bar places this stretch on the tree's whole timeline.

What it built on 2

What it led to 2