# Temperature

A measure of the warmth or coldness of an object or substance withreference to some standard value. The temperature of two systems isthe same when the systems are in thermal equilibrium. One approach to the definition of temperature is to consider three objects, say blocks of copper, iron and alumninum which are in contact such that they come to thermal equilibrium. By equilibrium we mean that they are no longer transferring any net energy to each other. We would then say that they are at the same temperature, and we would say that temperature is a property of these objects which implies that they will no longer transfer net energy to one another. We could say that A is at the same temperature as C even though they are not in contact with each other. This scenario is called the "zeroth law of thermodynamics" since this understanding logically precedes the ideas contained in the important First and Second Laws of Thermodynamics.

### Examples of TEMPERATURE in a sentence

1. Water boils at a temperature of 212°F.

2. The samples are kept at a constant temperature.

3. The weatherman predicted unusually low temperatures for the area.

4. the normal body temperature of 98.6°F