Last week, I made the claim that the significant digits of a measurement are not dependent on the units that you use to measure.  Today, I want to look at this from the point of view of units that are linearly related to each other, and I’m going to start with even more specificity and look only at units that are multiplicatively related (for example, this class excludes Fahrenheit to Celsius conversion) using the rules of significant digits. Continue reading Linearly Related Units and Significant Digits →