Carbon rods and r-7 rocket: what they have in common

1. Step 1. Carbon rods — is part of — Arc lamp. An arc burns between them.
2. Step 2. Arc lamp — is made of — Graphite. Carbon electrodes.
3. Step 3. Graphite — is material for — Ion thruster. The grids are graphite or molybdenum.
4. Step 4. Ion thruster — is part of — Space probe. Ion thrusters (Dawn).
5. Step 5. Space probe — uses — Multistage rocket. Launch.
6. Step 6. Multistage rocket — includes — R-7 rocket. A clustered multistage layout.

Open Evothings