erro zero
1. The error in a measuring instrument when no measurement is being taken, or the reading when the true value is zero. In measurement and instrumentation, it refers to the systematic error that exists at the starting point of measurement.
The scale showed a zero error of 0.5 grams, meaning we had to subtract this value from all subsequent measurements.
A balança apresentava um erro zero de 0,5 gramas, o que significava que tínhamos que subtrair esse valor de todas as medições subsequentes.
2. In metrology and scientific measurement, the discrepancy between the true zero value and the actual reading displayed by an instrument when nothing is being measured.
Before calibrating the thermometer, the technician checked for zero error by verifying the reading at freezing point.
Antes de calibrar o termômetro, o técnico verificou o erro zero confirmando a leitura no ponto de congelamento.
Zero error is a technical term primarily used in scientific, educational, and industrial contexts in both Brazil and the USA. It is particularly important in physics laboratories, engineering measurements, and quality control processes. In Brazilian educational institutions, especially in high school and university physics courses, understanding and correcting zero error is a fundamental concept taught when introducing measurement techniques.
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