key term - 0th Law of Thermodynamics

Definition

The 0th Law of Thermodynamics states that if two objects are in thermal equilibrium with a third object, then they are also in thermal equilibrium with each other. In simpler terms, it means that when two objects have the same temperature as a third object, they have the same temperature as each other.

Related terms

Thermal Equilibrium:

When two or more objects are at the same temperature and there is no net flow of heat between them.

1st Law of Thermodynamics:

Also known as the law of energy conservation, it states that energy cannot be created or destroyed, only transferred or transformed.

Temperature: A measure of how hot or cold an object is, based on the average kinetic energy of its particles.