Sam Albee
Types of measurement errors
Depending on their character, a distinction is made between gross, systematic and random errors.
Gross errors are errors that occur due to an incorrect structure - https://domyhomework.club/ , unsuitable measuring devices, incorrect readings, defective measuring devices or carelessness. If work is carried out carefully and according to plan, gross errors can generally be avoided. They are therefore not taken into account when considering errors. If a major error occurs, the corresponding values must be deleted and the measurements repeated.
Systematic errorsare errors that are primarily caused by the experimental setup or the measuring devices, but can also be caused by the experimenter himself. As the name suggests, they do not occur randomly, but are determined by the manner in which the measurements are made and usually have the same effect - physic helper - if the measurements are carried out several times. Systematic errors can partially be recorded and corrected. So z. B. the errors that occur due to heat losses when mixing two liquids of different temperatures, can be kept low if one takes into account the heat that is absorbed or given off by the vessel (heat capacity of the calorimeter).
Systematic errors are also caused by the inaccuracy of the measuring devices - https://domyhomework.club/engineering-homework/ . These errors are recorded via the accuracy class or the tolerance of the devices concerned. These are mostly given in the operating instructions.
So z. For example, for a voltmeter, the accuracy class 2.5 with a measuring range of 10 V: The maximum systematic error for all measurements in this measuring range is 2.5% of the end value of the measuring range, i.e. 2.5% of 10 V and thus ± 0.25 V. The maximum systematic errors can also be specified for other measuring devices (see overview).
See also:
Speak the language of your computer: source texts and programming languages
Embed
Share
Embed:
