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Core - Physics

    Chapter 18

    Temperature and Heat

    18.1 : Temperature and Thermal Equilibrium01:11

    18.1 : Temperature and Thermal Equilibrium

    Heat and temperature are essential concepts for everyone every day. The study of heat and temperature is part of an area of physics known as ...

    6.6K views
    18.2 : Zeroth Law of Thermodynamics01:14

    18.2 : Zeroth Law of Thermodynamics

    Experimentally, if object A is in equilibrium with object B, and object B is in equilibrium with object C, then object A is in equilibrium with object C. ...

    4.8K views
    18.3 : Thermometers and Temperature Scales01:22

    18.3 : Thermometers and Temperature Scales

    Any physical property that depends consistently and reproducibly on temperature can be used as the basis of a thermometer. For example, volume increases ...

    5.3K views
    18.4 : Gas Thermometers and the Kelvin Scale01:22

    18.4 : Gas Thermometers and the Kelvin Scale

    The definition of temperature in terms of molecular motion suggests that there should be a lowest possible temperature, where the average kinetic energy ...

    4.5K views
    18.5 : Thermal Expansion01:22

    18.5 : Thermal Expansion

    The expansion of alcohol in a thermometer is one of many commonly encountered examples of thermal expansion, which is the change in size or volume of a ...

    4.3K views
    18.6 : Thermal Stress01:09

    18.6 : Thermal Stress

    If the temperature of an object is changed while it is prevented from expanding or contracting, the object is subjected to stress. The stress is ...

    2.4K views
    18.7 : Thermal expansion and Thermal stress: Problem Solving01:27

    18.7 : Thermal expansion and Thermal stress: Problem Solving

    San Francisco's Golden Gate Bridge is exposed to temperatures ranging from -15 °C to 40 °C. At its coldest, the main span of the bridge is ...

    1.1K views
    18.8 : Heat Flow and Specific Heat01:12

    18.8 : Heat Flow and Specific Heat

    Heat is a type of energy transfer that is caused by a temperature difference, and it can change the temperature of an object. Since heat is a form of ...

    5.3K views
    18.9 : Phase Changes01:19

    18.9 : Phase Changes

    Phase transitions play an important theoretical and practical role in the study of heat flow. In melting or fusion, a solid turns into a liquid; the ...

    4.2K views
    18.10 : Calorimetry01:19

    18.10 : Calorimetry

    When objects at different temperatures are placed in contact with each other but isolated from everything else, they attain thermal equilibrium. A ...

    2.9K views
    18.11 : Mechanisms of Heat Transfer I01:14

    18.11 : Mechanisms of Heat Transfer I

    Just as interesting as the effects of heat transfer on a system are the methods by which the heat transfer occur. Whenever there is a temperature ...

    4.2K views
    18.12 : Mechanisms of Heat Transfer II01:20

    18.12 : Mechanisms of Heat Transfer II

    In convection, thermal energy is carried by the large-scale flow of matter. Ocean currents and large-scale atmospheric circulation, which result from the ...

    3.2K views
    18.13 : Conduction, Convection and Radiation: Problem Solving01:20

    18.13 : Conduction, Convection and Radiation: Problem Solving

    There are three methods by which heat transfer can take place: conduction, convection, and radiation. Each method has unique and interesting ...

    1.2K views
    18.14 : Radiation: Applications01:17

    18.14 : Radiation: Applications

    The average temperature of Earth is the subject of much current discussion. Earth is in radiative contact with both the Sun and dark space; it receives ...

    1.1K views
    18.15 : Absorption of Radiation01:05

    18.15 : Absorption of Radiation

    The rate of heat transfer by emitted radiation is described by the Stefan-Boltzmann law of radiation: where σ is the Stefan-Boltzmann constant, a ...

    710 views
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