different between thermocouple vs bimetallic

English

From thermo- +? couple.

thermocouple (plural thermocouples)

(physics) A transducer consisting of two different metals welded together at each end; a voltage is produced that is proportional to the difference in temperature between the two junctions (one of which is normally held at a known temperature)

From French bimétallique. Equivalent to bi- +? metallic.

bimetallic (not comparable)

Pertaining to the use of gold and silver to create legal currency.
- 1908, Arthur Conan Doyle, The Adventure of the Bruce-Partington Plans (Norton 2005), page 1302:
  We well suppose that a Minister needs information as to a point which involves the Navy, India, Canada and the bimetallic question.
More generally, consisting of two metals.

bimetallic (plural bimetallics)

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