Tram
device · 1881 · Electric age
Electric rail transport in cities (Pirotsky, Siemens).
What it is made of
- Electric motor — has part. Electric motors.
- Pantograph — has part. A current collector.
- Regenerative braking — has part. Modern trams recover energy.
Principles and materials it uses
- Steel — is made of. The body and frame are steel.
What it is a kind of
- Rail vehicle — is a kind of. Rail transport.
Things built in a similar way
- Trolleybus — works like. Powered from wires like a tram, but without rails.