the ability of an instrument of actually measuring what it is intended to measure is known as empirical research.
the ability of an instrument of actually measuring what it is intended to measure is known as empirical research.
the ability of an instrument of actually measure what it is intended to measure is known as?
empirical research
Na
Na
nulls are used in electrical science to make many measurements. a frequently encountered technique is to adjust the voltage in one branch of a circuit until it nulls out a voltage in another branch. commonly, a bridge circuit is used for this purpose. there are many varieties of measurement bridge, the most well known of these being the wheatstone bridge used to accurately measure the resistance of an unknown component against a calibrated variable resistance by comparing the voltages across each. the central branch of the bridge has the voltage under test on one side and the calibrated voltage on the other: when they are equal the voltage across the central branch is nulled out. the measurement is carried out by placing an instrument to detect voltage or current in the central branch. an advantage of the bridge method is that this instrument does not need to be calibrated since it is only required detect nulls, not to actually measure a voltage. the accuracy of the measurement will, however, depend on the sensitivity of the instrument since this will affect the resolution of the bridge.
null (physics)