Lift charge and smart meter: what they have in common

1. Step 1. Lift charge — is part of — Fireworks. It launches the shell from the mortar.
2. Step 2. Fireworks — evolved into — Rocket. Chinese gunpowder rockets grew out of pyrotechnics.
3. Step 3. Rocket — includes — Multistage rocket. A multistage rocket is a rocket that drops its empty tanks on the way.
4. Step 4. Multistage rocket — is used in — Space probe. Launch.
5. Step 5. Space probe — has part — Radio module and antenna. Communication with Earth.
6. Step 6. Radio module and antenna — is part of — Smart meter. Data transmission.

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