Aircraft carrier and telescope: what they have in common

1. Step 1. Aircraft carrier — evolved from — Ironclad. The first aircraft carriers were converted from battleships and cruisers.
2. Step 2. Ironclad — has part — Gyrocompass. Steel ships distort a magnetic compass.
3. Step 3. Gyrocompass — has part — Gyroscope. A gyroscope.
4. Step 4. Gyroscope — is part of — Space telescope. Pointing gyroscopes.
5. Step 5. Space telescope — is a kind of — Telescope. A space telescope is a telescope above the atmosphere, so air does not blur the view.

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