Stereoscope and kiln: 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 — uses — Angular momentum. The rotor keeps the direction of its axis.
4. Step 4. Angular momentum — is used in — Potter’s wheel. A heavy disc keeps spinning by inertia.
5. Step 5. Potter’s wheel — is used in — Pottery. The wheel made shaping vessels faster and more even.
6. Step 6. Pottery — uses — Kiln. Firing in a kiln makes clay strong.

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