Forging press and smartphone: what they have in common
- Step 1. Forging press — has part — Hydraulic cylinder. Working cylinders.
- Step 2. Hydraulic cylinder — is part of — Forklift. Lifting the forks.
- Step 3. Forklift — evolved into — Warehouse robot. Automating warehouses.
- Step 4. Warehouse robot — has part — Lithium-ion battery. A battery.
- Step 5. Lithium-ion battery — is part of — Smartphone. Power comes from a lithium-ion (lithium-polymer) battery.