Physics and physical measurement Flashcards
1
Q
SI units
A
Basic units, kilograms, second, mole, meter, ampere, Kelvin and candela
2
Q
derived units
A
Combination of fundamental units.
3
Q
Accuracy
A
An indication of how close a measurement is to the accepted value
4
Q
precision
A
An indication of the agreement among a number of measurements made
5
Q
Random uncertainty
A
Uncertainty produced by unknown and unpredictable variations.
6
Q
Systematic error
A
An error associated with a particular instrument or technique causes the measurements to fluctuate by the same amount.
7
Q
vector
A
Quantity with magnitude and direction
8
Q
Scalar
A
Quantity with magnitude only
