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Celsius,Kelvin and Fahrenheit...

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Is a scale based on 32 for freezing and 212 for boiling point of water, the interval between the two point is divided into 180 parts. The conversion formula for a temperature is expressed on the Celsius scale to its Fahrenheit:

• °F = 9/5 °C + 32

While following the formula can be used to convert a temperature from its representation on the Fahrenheit scale to the Celsius:

• °C = ( °F – 32) / 1,8
DOVE 1,8= 9

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The conversion from Celsius to Kelvin scale is very simple.

• °C = K – 273,15°
• K = °C + 273,15°

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The Kelvin temperature scale is the standard metric system of temperature measurement and perhaps the most widely used temperature scale among scientists, and it is similar to the Celsius scale. The zero point on the Kelvin scale is known as absolute zero and it is the lowest temperature that can be achieved.

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It is also called ''centigrade temperature scale'' is the scale based on 0 for the freezing and the 100 for the boiling point of water. Was invented by Anders Celsius, astronomer.

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There are three different kinds of temperature scale:
~Celsius scale
~Kelvin scale
~Fahrenheit scale

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A thermometer is calibrated by using two objects of known temperatures. The typical process involves using the freezing point and the boiling point of water. By placing a thermometer liquid to reach a stable height,similar by placing the thermometer in boiling water and allowing the liquid level to reach the height and mark the thermometer.

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This permits temperature measurement from a distance without contact with the object to be measured. It is based on the reflection of radiation from hotter boy.

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Uses a sensor consisting of two metals welded together which have the property to develop a different value voltage and it is the result changed in temperature.

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Uses a sensor consists of a thermistor powered by an electric current, when the temperature changes cause in the sensor the electrical resistance.

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It is formed by a leaf shaped U or spiral, consisting into two metals with different coefficient of expansion that are welded together, one on the outside and the other in the inner part of the lamina. One of the border of the lamina is connected to an index.

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Measure the temperature through the variation of volume or pressure of a gas contained inside a glass tube and is uses for the calibration of other thermometer.

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Is compose of glass tube containing mercury. The variation in temperature causes change in volume of the mercury.

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There are three different kinds of thermometer:
~Mercury thermometer
~Gas thermometer
~Bimetallic strip thermometer
~Digital thermometer
~Thermocouple thermometer
~Infrared thermometer

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A thermometer is a device that measures temperature or a temperature variation. They are based on specific functioning :
~The thermal expansion of liquid, gaseous and solid substance
~The electrical resistance of a material

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Temperature is measure of hotness or coldness, the symbol of this greatness is T and also be used to measure the degree of heat.