Resonator tubes and laser: what they have in common

1. Step 1. Resonator tubes — is part of — Xylophone. They amplify the sound of the bars.
2. Step 2. Xylophone — uses — Resonance. Resonating bars.
3. Step 3. Resonance — is used in — Quartz clock. Resonance of the crystal.
4. Step 4. Quartz clock — is made of — Silica (sand). The resonator is a quartz crystal.
5. Step 5. Silica (sand) — is material for — LIGO. The mirrors are fused silica.
6. Step 6. LIGO — uses — Laser. A laser.

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