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Zeroth law
Zeroth Law of Thermodynamics The Zeroth Law of Thermodynamics states that a system in a perfect vacuum at absolute zero (0 Kelvin) will reach a con...
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Zeroth Law of Thermodynamics The Zeroth Law of Thermodynamics states that a system in a perfect vacuum at absolute zero (0 Kelvin) will reach a con...
The Zeroth Law of Thermodynamics states that a system in a perfect vacuum at absolute zero (0 Kelvin) will reach a constant temperature regardless of any external heat input or output. This means that the internal energy of the system remains constant, regardless of the external environment.
In other words, the system's internal energy is independent of its surroundings, including heat, work, and chemical potential. This implies that the only way to change the internal energy of a perfect vacuum system is through work or heat input.
Zeroth Law Examples:
Perfect Gas Law: In an ideal gas under constant pressure, the internal energy of the gas is directly proportional to the temperature. This means that if the temperature increases, the internal energy also increases, even if the pressure remains constant.
Adiabatic Process: In an adiabatic process, no heat is exchanged between the system and its surroundings, meaning that the internal energy remains constant.
Zeroth Law of Black Body Radiation: A black body absorbs all radiation it receives, regardless of the wavelength, and hence, its internal energy remains constant regardless of the temperature.
The zeroth law has important implications for understanding how a system behaves when it reaches its minimum energy state. It helps predict the behavior of systems in thermodynamic equilibrium and clarifies the role of heat and work in changing the internal energy of a system