V-2 rocket and internet: what they have in common

  1. Step 1. V-2 rocket — is a kind of — Liquid-propellant rocket engine. A liquid-propellant engine.
  2. Step 2. Liquid-propellant rocket engine — is part of — Space Shuttle. Hydrogen-fuelled main engines.
  3. Step 3. Space Shuttle — is made of — Silica (sand). The heat-shield tiles are silica fibre.
  4. Step 4. Silica (sand) — is material for — Internet. The backbones are silica optical fibre.

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