international ampere
- noun
- Archaic
:
ampere internacional
- Before the modern SI system was established, the international ampere was commonly used as a unit of electric current.
Examples
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The circuit was calibrated using the international ampere before the SI system was adopted.
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In the early 1900s, the international ampere served as a crucial benchmark for calibrating electrical devices.
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Early 20th-century electrical measurements often referenced the international ampere as the standard unit.
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The difference between an international ampere and the modern ampere is important in historical engineering records.
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The international ampere was widely used before the 20th century.
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In some older textbooks, you might find references to the international amperes.
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Many electrical engineers still study the international ampere for its significance in the history of electric measurements.
Surface Forms
Morphology
The compound directly combines 'international' (involving multiple countries or standardized across countries) with 'ampere' (the unit of electric current), so a B1 learner who knows both words can infer it refers to a particular internationally defined type or standard of the ampere. The fine historical detail that it is a former definition slightly different from the modern SI ampere is specialized, but the basic compositional sense is transparent.
Etymology
The noun international ampere comes from the scientist Ampère and the idea of international agreement, where many countries chose one 'standard' way to measure electric current. It was the common unit people used before the modern ampere, so the name now refers to that older, slightly different unit.
