Screw lamp base e pneumatic tube: o que têm em comum

1. Passo 1. Screw lamp base — faz parte de — Incandescent light bulb. A screw contact (the Edison base).
2. Passo 2. Incandescent light bulb — utiliza — Vacuum. The bulb was evacuated so the filament would not burn out.
3. Passo 3. Vacuum — é utilizado em — Hyperloop (concept). A vacuum in the tube.
4. Passo 4. Hyperloop (concept) — foi inspirado por — Pneumatic tube. Capsules in a tube — pneumatic post for people.

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