Ski base and heat pump: what they have in common

1. Step 1. Ski base — is part of — Skis. The underside.
2. Step 2. Skis — uses — Friction. Gliding over snow.
3. Step 3. Friction — is used in — Air brake. Brake shoes slow the wheels through friction.
4. Step 4. Air brake — has part — Compressor. A compressor pumps the air.
5. Step 5. Compressor — is part of — Heat pump. A compressor.

Open Evothings