Uncertainty of a measured value is an interval around that value such that any repetition of the measurement will produce a new result that lies within this interval.
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What is the use of uncertainty?
In reality, the exact value of a quantity cannot be measured. There is a limit to the precision of measurement, sensor or measuring device. Hence it is used to make an interval around the value
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Give examples of quantities or measuring device where there are limits of precision
Stop watch; Ruler; Voltmeter
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How do you measure uncertainties?
Error intervals, Relative uncertainties and Combining uncertainties
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What does error intervals look at?
The resolution
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What does relative uncertainties measure?
The percentage of uncertainty
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What are the combining uncertainties?
They are adding, subtracting, multiplying, dividing and powers
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Other cards in this set
Card 2
Front
What is the use of uncertainty?
Back
In reality, the exact value of a quantity cannot be measured. There is a limit to the precision of measurement, sensor or measuring device. Hence it is used to make an interval around the value
Card 3
Front
Give examples of quantities or measuring device where there are limits of precision
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