Ion source and fitness tracker: what they have in common

1. Step 1. Ion source — is part of — Mass spectrometer. It ionizes the substance.
2. Step 2. Mass spectrometer — has part — Vacuum pump. A vacuum system.
3. Step 3. Vacuum pump — is part of — Milking machine. A vacuum pump.
4. Step 4. Milking machine — is made of — Vulcanized rubber. Teat liners.
5. Step 5. Vulcanized rubber — is material for — Fitness tracker. The strap is silicone.

Open Evothings