Definitions

# What are Temperature Scales definition/concept

Changes in temperature have consequences on the physical or chemical properties of matter. In this sense, an increase or decrease in temperature can produce a variation in the length, volume or color of a body. These and other changes can be measured with a thermometer that determines the degree of cold or heat in a body. Temperature Scales

### In the early 17th century, several scientists tried to create a system to measure the temperature of gases and liquids.

The inventor of the thermometer was the Italian Galileo Galilei, at the beginning of the 17th century. The first thermal meter was based on the expansion of a gas, but over time mercury thermometers began to be used . Currently, there are several devices to measure temperature and for this external sensors were used. There are indicators on each measuring instrument , which correspond to a specific temperature scale .

### The three most used temperature scales

So that the concepts of cold and heat were not subjective, it was necessary to introduce a scale that accurately measured the heat of a body.

1) On the Reanumur scale, the freezing point of water received a value of zero degrees and the boiling point reached 80 degrees. This form of measurement was no longer used in the 19th century, as it was replaced by others.

2) The Celsius scale received this name from the Swedish scientist Anders Celsius (1701-1744). In it, the degree 0 represents the freezing point of water, while the 100 corresponds to its boiling point. Temperature Scales

3) The Kelvin scale, also known as the absolute scale, is normally used to prove the behavior of gases. In other words, you measure the pressure of a gas with a constant volume and temperature variation. In degrees Kelvin, absolute zero corresponds to -273 degrees Celsius.

### On the Fahrenheit scale the melting point of water reaches 32 degrees of temperature, while the boiling point is 212 degrees

This form of temperature measurement is used in Anglo-Saxon countries, but little by little this system is being displaced in favor of the international system.

Temperature is a physical magnitude and is directly related to the energy of the particles that make up different bodies. Temperature Scales

The more particles in a body move, the higher their temperature.

It should be noted that the temperature does not have a maximum limit, but a minimum limit. In this case, we are talking about the absolute minimum.