Nebulizer mask and LIGO: what they have in common

1. Step 1. Nebulizer mask — is part of — Nebulizer. Aerosol delivery.
2. Step 2. Nebulizer — has part — Compressor. A compressor.
3. Step 3. Compressor — is part of — Pneumatic tube. A pressure or vacuum blower.
4. Step 4. Pneumatic tube — inspired — Hyperloop (concept). Capsules in a tube — pneumatic post for people.
5. Step 5. Hyperloop (concept) — uses — Vacuum. A vacuum in the tube.
6. Step 6. Vacuum — is used in — LIGO. 4 km vacuum tubes.

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