Unit Conversion and Significant Figures

A unit is the frequently arbitrary designation we have given to something to convey a definite magnitude of a physical quantity and every quantity can be expressed in terms of the seven base units that are contained in the international system of units. Hank thinks this is a thrilling subject, and while you may not agree, it is a subject that is very important if you want to be a scientist and communicate with accuracy and precision with other scientists.

Significant Figures Made Easy

This video discusses significant figures.

Error and Percent Error

This video discusses error and percent error.

Arsenic in Fruit Juice

This news clip covers studies done on arsenic levels in fruit juice.