Cyclotron and payment card: what they have in common

1. Step 1. Cyclotron — has part — Electromagnet. A magnet.
2. Step 2. Electromagnet — is part of — Tape recorder. Recording heads are electromagnets.
3. Step 3. Tape recorder — has part — Magnetic tape. Magnetic tape.
4. Step 4. Magnetic tape — uses — Magnetism. Recording by magnetization.
5. Step 5. Magnetism — is used in — Payment card. A magnetic stripe.

Open Evothings