Car radio
part · 1930 · Electric age
A radio receiver in a car (Motorola).
What it is made of
- Vacuum tube — has part. The first car radios used vacuum tubes.
Principles and materials it uses
- Copper — is made of. The conductors are copper.
- Electromagnetic waves — uses. It receives radio waves.
Where it is used
- Car — is part of. A car radio.
What it is a kind of
- Radio — is a kind of. A radio receiver.