Parachute and atomic clock: what they have in common

1. Step 1. Parachute — is part of — Vostok 1. Gagarin landed by parachute.
2. Step 2. Vostok 1 — has part — Heat shield. A spherical descent capsule with a heat shield.
3. Step 3. Heat shield — is part of — Space Shuttle. Heat-shield tiles.
4. Step 4. Space Shuttle — is made of — Silica (sand). The heat-shield tiles are silica fibre.
5. Step 5. Silica (sand) — is material for — Quartz clock. The resonator is a quartz crystal.
6. Step 6. Quartz clock — evolved into — Atomic clock. The quartz oscillator is tuned to an atomic standard.

Open Evothings