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Heat
LC Physics
Term | Definition |
---|---|
Temperature | Measure of how hot or how cold something is. |
Temperature in degrees celsius = | Temperature in Kelvins - 273.15 |
Thermometric property | Any physical property that changes measurably with temperature. |
Thermometric property of a thermocouple | EMF changes measurably with temperature. |
Heat Capacity | The heat energy needed to change the temperature of an object by 1 Kelvin. |
Specific Heat Capacity | The heat energy needed to change the temperature of 1 kg of a substance by 1 Kelvin. |
Specific Latent Heat | The heat energy needed to change the state of 1 kg of a substance without a change in temperature. |
Specific Latent Heat of Fusion | The heat energy needed to change 1 kg of a substance from a solid to a liquid without a change in temperature. |
Specific Latent Heat of Vaporisation | The heat energy needed to change 1 kg of a substance from a liquid to a gas without a change in temperature. |
Conduction | The transfer of heat energy through a substance by molecular vibrations without any overall motion of the substance. |
Convection | The transfer of heat energy through a fluid by means of circulating currents. |
Radiation | The transfer of heat energy in the form of electromagnetic waves. |
U-Value | The amount of heat energy conducted per second through 1 metre squared of that structure when a temperature difference of 1 Kelvin is maintained between its ends. |
Solar Constant (Solar Irradiance) | The average amount of the Sun's energy falling per second perpendicularly on 1 metre squared of the Earth's atmosphere. It's value is 1.35 kW/m^2. |
Latent Heat | The heat energy needed to change the state of a substance without a change in temperature. |