Thermistor and dewar flask: what they have in common

1. Step 1. Thermistor — is made of — Semiconductor. A thermistor is an oxide semiconductor.
2. Step 2. Semiconductor — is material for — Laser. Maiman’s first laser was a ruby crystal; today it is more often a semiconductor.
3. Step 3. Laser — has part — Mirror. A resonator made of mirrors.
4. Step 4. Mirror — is part of — Vacuum flask. The silvering reflects heat radiation.
5. Step 5. Vacuum flask — evolved from — Dewar flask. A household Dewar flask.

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