Supercapacitor and radar: what they have in common

1. Step 1. Supercapacitor — is made of — Graphite. Electrodes made of activated carbon.
2. Step 2. Graphite — is material for — Ion thruster. The grids are graphite or molybdenum.
3. Step 3. Ion thruster — is part of — Space probe. Ion thrusters (Dawn).
4. Step 4. Space probe — has part — Radio module and antenna. Communication with Earth.
5. Step 5. Radio module and antenna — has part — Antenna. An antenna.
6. Step 6. Antenna — is part of — Radar. An antenna emits and receives.

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