Brass rod with chain and sickle: what they have in common

1. Step 1. Brass rod with chain — is part of — Leyden jar. A lead to the inner plate.
2. Step 2. Leyden jar — uses — Electrostatic machine. Charged by the machine.
3. Step 3. Electrostatic machine — uses — Friction. Friction.
4. Step 4. Friction — is used in — Flintlock. A spark from a strike of flint.
5. Step 5. Flintlock — is made of — Flint. A flint strikes the spark.
6. Step 6. Flint — is material for — Sickle. Neolithic sickles were a wooden base with flint inserts.

Open Evothings