Photometer bench scale and radio: what they have in common

1. Step 1. Photometer bench scale — is part of — Photometer. The distance to the sources.
2. Step 2. Photometer — uses — Reflection of light. Brightness is judged from reflected light.
3. Step 3. Reflection of light — is used in — Dish antenna. A paraboloid focuses the waves.
4. Step 4. Dish antenna — is a kind of — Antenna. An antenna.
5. Step 5. Antenna — is part of — Radio. An antenna.

Open Evothings