Cobalt and glasses: what they have in common

1. Step 1. Cobalt — is material for — Cathode (lithium metal oxide). LiCoO₂ contains cobalt.
2. Step 2. Cathode (lithium metal oxide) — is part of — Lithium-ion battery. The lithium metal oxide cathode gives up ions during charging.
3. Step 3. Lithium-ion battery — is part of — Quadcopter (drone). A lithium-polymer battery.
4. Step 4. Quadcopter (drone) — has part — Smartphone camera. A camera.
5. Step 5. Smartphone camera — is part of — AR glasses. Cameras.
6. Step 6. AR glasses — evolved from — Glasses. Glasses with a display.

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