However, in view of its present high price, rhenium (used in highly fuel-efficient aircraft engines) is now recovered from scrap bimetallic catalysts used in the oil refining industry.
It was he who perfected the kettle thermostat, the bimetallic strip which ensures our kettle switches off once it has boiled merrily for a few seconds, rather than boiling dry.
Considering 1843 to 1871 once again in Europe, compared to France (bimetallic standard), Russia and Austria (both on and off silver during the period), the cost for England to raise debt in the markets was lower than the other three as evidenced by the lower yields on its bonds.