Bakelite and hydraulic press: what they have in common

1. Step 1. Bakelite — is material for — Rotary dial. The dial is Bakelite.
2. Step 2. Rotary dial — has part — Spring. A return spring.
3. Step 3. Spring — is part of — Door closer. A spring.
4. Step 4. Door closer — uses — Hydraulics (Pascal’s law). Hydraulic damping.
5. Step 5. Hydraulics (Pascal’s law) — is used in — Hydraulic press. Pascal’s law multiplies the force.

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