Rapid test and particle accelerator: what they have in common

1. Step 1. Rapid test — is made of — Gold. The label is gold nanoparticles.
2. Step 2. Gold — is material for — Electroscope. With leaves of gold leaf.
3. Step 3. Electroscope — uses — Static electricity. The leaves repel each other.
4. Step 4. Static electricity — is used in — Van de Graaff generator. Charge is carried by a belt.
5. Step 5. Van de Graaff generator — evolved into — Particle accelerator. Early accelerators.

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