1.1What you will learn1.21.1 Why we measure1.31.2 Definition of measurement1.41.3 The three elements of any measurement1.51.4 Physical quantities1.62.1 Fundamental physical quantities1.72.2 Derived physical quantities1.82.3 Physics and mathematics1.92.4 Systems of units1.102.5 The International System of Units (SI)1.112.6 Scientists who benefited humanity1.123.1 From the body to the instrument1.133.2 Examples of instruments, old and modern1.143.3 The vernier caliper — measuring length precisely1.15Lesson 4: Standard Units (Length, Mass, Time)1.164.1 The standard of length — the metre1.174.2 The standard of mass — the kilogram1.184.3 The standard of time — the second1.195.1 The idea1.205.2 Getting the unit from the dimensional formula1.215.4 Table of dimensional formulas1.225.5 Rules to remember ("Pay attention")1.236.1 Dimensional homogeneity1.246.3 Limits of the method (important!)1.25Lesson 7: Multiples and Submultiples of Units; Scientific Notation1.268.1 No measurement is perfect1.278.2 Sources of error1.288.3 Precautions when using a metre ruler1.298.4 Direct and indirect measurement1.30Extra worked problems1.31SummaryWhat would you like to do next?