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Core - Physics

    Chapter 1

    Units, Dimensions, and Measurements

    1.1 : The Scope of Physics01:17

    1.1 : The Scope of Physics

    Physics is concerned with the interactions of energy, matter, space, and time, in order to discover the underlying mechanisms that underpin all phenomena. ...

    25.9K views
    1.2 : Orders of Magnitude01:15

    1.2 : Orders of Magnitude

    The order of magnitude of a number is the power of 10 that most closely approximates it. Thus, the order of magnitude estimates the scale (or size) of its ...

    17.1K views
    1.3 : Models, Theories, and Laws01:16

    1.3 : Models, Theories, and Laws

    Scientists frequently use models to help them comprehend a specific collection of phenomena. In physics, a model is a condensed version of a physical ...

    5.2K views
    1.4 : Units and Standards of Measurement01:10

    1.4 : Units and Standards of Measurement

    A physical quantity is defined either by specifying its measurement method or by stating how it is calculated from other measurements. For example, ...

    31.4K views
    1.5 : Estimation of the Physical Quantities01:05

    1.5 : Estimation of the Physical Quantities

    On many occasions, physicists, other scientists, and engineers need to make estimates of a particular quantity. These are sometimes referred to as ...

    4.2K views
    1.6 : Base Quantities and Derived Quantities01:14

    1.6 : Base Quantities and Derived Quantities

    In any system of units, the units for some physical quantities must be specified through a measurement process. These measurements are the base quantities ...

    19.9K views
    1.7 : Conversion of Units01:36

    1.7 : Conversion of Units

    Sometimes, there is a need to convert from one unit to another one. For instance, reading a cookbook in which quantities are expressed in units of liters ...

    22.2K views
    1.8 : Accuracy and Precision01:52

    1.8 : Accuracy and Precision

    Scientists typically make repeated measurements of a quantity to ensure the quality of their findings and to evaluate both the precision and the accuracy ...

    8.7K views
    1.9 : Random and Systematic Errors01:20

    1.9 : Random and Systematic Errors

    Scientists always try their best to record measurements with the utmost accuracy and precision. However, sometimes errors do occur. These errors can be ...

    10.8K views
    1.10 : Rules for Significant Figures01:44

    1.10 : Rules for Significant Figures

    In any measurement, the precision of the measuring tool is an essential factor. An ordinary ruler, for example, can measure length to the closest ...

    12.7K views
    1.11 : Significant Figures in Calculations00:58

    1.11 : Significant Figures in Calculations

    Uncertainty in measurements can be avoided by reporting the results of a calculation with the correct number of significant figures. This can be ...

    10.4K views
    1.12 : Dimensional Analysis02:19

    1.12 : Dimensional Analysis

    The concept of dimension is important because every mathematical equation linking physical quantities must be dimensionally consistent, implying that ...

    14.9K views
    1.13 : Problem Solving: Dimensional Analysis01:08

    1.13 : Problem Solving: Dimensional Analysis

    Every mathematical equation that connects separate distinct physical quantities must be dimensionally consistent, which implies it must abide by two ...

    3.3K views
    1.14 : Solving Problems in Physics02:32

    1.14 : Solving Problems in Physics

    Problem-solving is the ability to apply general physical principles to specific situations, usually expressed by equations. It is an essential skill in ...

    5.7K views
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