[ Instruments to measure the temperature ]

The thermometers are a instruments that measure the temperature.

There are three types of thermometres:

●Alcohol thermometre of laboratory.

●Clinical thermometers of mercury.

●Thermometer of alcohol of environment.

To measure the temperature,there are two scales:

● The centigrade temperature scale or celsius: in this scale,the unit is a centigrade degree (ºC).

● The scientific use the Kelvin scale.In this scale,the unit is the Kelvin (K).One kelvin has got the same size that a centigrade degree,but the cero of Kelvin scale is -273ºC and yourname is absolute cero.

To transform one value of a scale to other is easy:Kelvin temperature = centigrade temperature+273