Wi-Fi and sickle: what they have in common

1. Step 1. Wi-Fi — uses — Electromagnetic waves. Radio waves at 2.4 and 5 GHz.
2. Step 2. Electromagnetic waves — evolved from — Electromagnetic induction. Maxwell’s equations, which generalized induction, predicted electromagnetic waves.
3. Step 3. Electromagnetic induction — is used in — Electric toothbrush. Wireless charging by induction.
4. Step 4. Electric toothbrush — evolved from — Toothbrush. A motorized toothbrush.
5. Step 5. Toothbrush — has part — Handle. A plastic handle.
6. Step 6. Handle — is part of — Sickle. A short one-handed handle.

Open Evothings