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Invar
At the beginning of this century, Charles Edouard Guillaume, in the course of research into alloys suitable for standards of length, discovered that a steel alloy containing 36 percent of nickel possessed a practically zero coefficient of expansion, some samples even having a negative coefficient. Guillaume suggested the use of this alloy, which he called 'invar', for the pendulum rods in clocks.
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- Part of Speech: noun
- Synonym(s):
- Blossary:
- Industry/Domain: Chronometry
- Category: Clock
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