Scissor blades and heron’s aeolipile: what they have in common

1. Step 1. Scissor blades — is part of — Scissors. Two crossing blades.
2. Step 2. Scissors — is made of — Bronze. Ancient scissors were bronze.
3. Step 3. Bronze — is material for — Heron’s aeolipile. The aeolipile is a bronze ball.

Open Evothings