Optical fibre and tank: what they have in common

1. Step 1. Optical fibre — is part of — Endoscope. Flexible endoscopes use optical fibre.
2. Step 2. Endoscope — uses — Reflection of light. A mirror directs the light of a candle.
3. Step 3. Reflection of light — is used in — Periscope. Reflection.
4. Step 4. Periscope — is part of — Tank. Observation devices.

Open Evothings