Electroluminescence and archimedes’ screw: what they have in common

1. Step 1. Electroluminescence — is used in — Pixel matrix (OLED). Each OLED pixel glows by itself under current.
2. Step 2. Pixel matrix (OLED) — is part of — VR headset. OLED screens.
3. Step 3. VR headset — has part — Gyroscope. Head tracking.
4. Step 4. Gyroscope — is part of — Torpedo. Obry’s gyroscope keeps the course.
5. Step 5. Torpedo — has part — Propeller. Propellers.
6. Step 6. Propeller — evolved from — Archimedes’ screw. The first propellers by Smith and Ericsson were a variation on the Archimedes’ screw.

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