Wooden tone bars and shaduf: what they have in common

1. Step 1. Wooden tone bars — is part of — Xylophone. Wooden bars tuned by length.
2. Step 2. Xylophone — uses — Resonance. Resonating bars.
3. Step 3. Resonance — is used in — Tuning fork. A natural frequency.
4. Step 4. Tuning fork — is used in — Piano. Tuning.
5. Step 5. Piano — has part — Lever. The hammer action is a system of levers.
6. Step 6. Lever — is used in — Shaduf. A shaduf is a lever with a counterweight.

Open Evothings