Stereoscope and tank: what they have in common

1. Step 1. Stereoscope — evolved into — VR headset. Two images for two eyes — the idea of the stereoscope.
2. Step 2. VR headset — has part — Gyroscope. Head tracking.
3. Step 3. Gyroscope — is part of — Gyrocompass. A gyroscope.
4. Step 4. Gyrocompass — is part of — Ironclad. Steel ships distort a magnetic compass.
5. Step 5. Ironclad — has part — Armour. An armour belt.
6. Step 6. Armour — is part of — Tank. Armour protects the crew.

Open Evothings