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thermos - means heat in greek

dynamos - means change or power in greek

thermal energy - the heat of a body or system changes

thermal expansion - heat causes changes in matter

work done by heat - heat generates work and power in engines

Zeroth Law - known as equilibrium

first law - known as conservation

second law - known as entropy

third law - known as absolute zero

Laws of Thermodynamics

  1. Zeroth Law - Systems that are in thermal equilibrium exist at the same temperature.

Thermal Equilibrium - When two or more bodies at different temperatures are brought into contact then after some time, they attain a common temperature and they are said to exist in thermal equilibrium.

  1. First Law - Thermodynamic processes are therefore subject to the principle of conservation of energy.

  2. 2nd Law - Whenever there is an opportunity for energy dispersal, the energy always spreads out

Entropy - The measure of this dispersal of energy

  • entropy of an isolated system always increases

  • highest entropy is gas, lowest entropy is solid

  • heat flow from a hot body to a cold body \

  1. 3rd Law - As temperature approaches absolute zero, the entropy of a system approaches a constant minimum.

At a temperature of zero Kelvin, the following phenomena can be observed in a closed system: The system does not contain any heat. All the atoms and molecules in the system are at their lowest energy points.

Temperature - a property that distinguishes thermodynamics from other sciences. This property can distinguish between hot and cold.

COEFFICIENT OF LINEAR EXPANSION - the change in length divided by the product of the original length and the change in temperature

COEFFICIENT OF VOLUME EXPANSION - the change in volume divided by the product of the original volume and the change in temperature

thermos - means heat in greek

dynamos - means change or power in greek

thermal energy - the heat of a body or system changes

thermal expansion - heat causes changes in matter

work done by heat - heat generates work and power in engines

Zeroth Law - known as equilibrium

first law - known as conservation

second law - known as entropy

third law - known as absolute zero

Laws of Thermodynamics

  1. Zeroth Law - Systems that are in thermal equilibrium exist at the same temperature.

Thermal Equilibrium - When two or more bodies at different temperatures are brought into contact then after some time, they attain a common temperature and they are said to exist in thermal equilibrium.

  1. First Law - Thermodynamic processes are therefore subject to the principle of conservation of energy.

  2. 2nd Law - Whenever there is an opportunity for energy dispersal, the energy always spreads out

Entropy - The measure of this dispersal of energy

  • entropy of an isolated system always increases

  • highest entropy is gas, lowest entropy is solid

  • heat flow from a hot body to a cold body \

  1. 3rd Law - As temperature approaches absolute zero, the entropy of a system approaches a constant minimum.

At a temperature of zero Kelvin, the following phenomena can be observed in a closed system: The system does not contain any heat. All the atoms and molecules in the system are at their lowest energy points.

Temperature - a property that distinguishes thermodynamics from other sciences. This property can distinguish between hot and cold.

COEFFICIENT OF LINEAR EXPANSION - the change in length divided by the product of the original length and the change in temperature

COEFFICIENT OF VOLUME EXPANSION - the change in volume divided by the product of the original volume and the change in temperature

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