In addition to the revision notes for Significant Figures and their Importance on this page, you can also access the following Units and Measurements learning resources for Significant Figures and their Importance
|1.3||Significant Figures and their Importance|
In these revision notes for Significant Figures and their Importance, we cover the following key points:
Significant figures represent the accuracy with which we know the values of a measurement. The accuracy of an apparatus is equal to the smallest unit it can measure.
There are five basic rules to find the correct number of significant figures in a given numerical value obtained during a measurement. They are:
If we have a combined measurement (for example we have the length and width given and want to calculate the area, first we must write both numbers at the same degree of accuracy (to the accuracy of the least accurate dimension) and then doing the operations.
The following Physics Calculators are provided in support of the Units and Measurements tutorials.