The basics Flashcards
1
Q
Homogenous equations must have…
A
the same magnitude and unit on both sides. E.g. 5s=5s
2
Q
Error is…
A
the difference between the measured value and the ‘true value’.
3
Q
Uncertainty is…
A
quantification of the doubt about the measurement result or the precision of the instrument.
4
Q
Absolute uncertainty:
A
- the precision of the measuring instrument
- half the range of a set of repeated readings
5
Q
If the reading is constant when repeated…
A
the precision of the measurement is the precision of the measuring instrument.
6
Q
Random error is when…
A
repeating the measurement gives a randomly different result.
7
Q
Systematic error is where…
A
the same influence affects the result for each of the repeated readings. E.g. 0 error
8
Q
Ratchet on the micrometer is…
A
used to close the micrometer.
