Thermodynamics is the physics of relationships of heat and different forms of energy and the effect it has on matter.

Thermal Energy (heat energy) is the energy a substance or matter has because of its temperature. Like how heat molecules move faster and expand. Thermodynamics associate with measuring energy.


Thermodynamics is connected with several properties of matter, most important among these is heat. Heat is energy transmitted between two or more substances because of a temperature difference. Heat can be transferred from one place to another and can also be transformed from heat to a kinetic energy.

Thermal Conductivity

Thermal conductivity is the rate which heat passes through a specified material. This is the amount expressed through the amount of heat that flows per unit.

If I held a lighter under an aluminum pole, would you touch it? How about a wet piece of wood? Most people wil chose the wood because it wil take longer to heat up.

Newton's Law of Cooling

Sir Isaac Newton started his law of cooling in 1701. It was stated in an article titled "A Scale of the Degrees of Heat" Newton explains it as, "the rate of change of temperature is proportional to the difference between the temperature of the object and that of the surrounding environment."

The Four Laws of Thermodynamics

There are four laws of thermodynamics, The Zeroth Law, The First Law, The Second Law and The Third Law.

The Zeroth Law states that if two bodies are in thermal equilibrium with some third body, then they are also in equilibrium with each other.

The First Law says that the total increase in the energy of a system is equal to the increase in thermal energy plus the work done on the system.

The Second Law is that heat energy cannot be transferred from a body at a lower temperature to a body at a higher temperature without the addition of energy. This is why it costs money to run an air conditioner.

And The Third Law states that the entropy of a pure crystal at absolute zero is zero. As explained above, entropy is sometimes called "waste energy," e.g., energy that is unable to do work, and since there is no heat energy whatsoever at absolute zero, there can be no waste energy.

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