Why use Celsius?

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2018-03-22 11:34:08

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Nowadays it is impossible to live without measurement. Measure length, volume, weight and temperature. There are several units of measurement all measures, but there are
Recognized. They are used almost all over the world. To measure temperature in the International system of units use degrees Celsius as the most comfortable. Only in the US and the UK are less accurate Fahrenheit.

degrees Celsius

History temperature measurement

The Concept of temperature has been known to people since ancient times. They were able to determine that an object is colder or warmer than the other. But needs accurate measurements did not arise until such time as neither a production. Metallurgy, steam engines could not work without precise determining of the degree of heating of the objects. So scientists began to work on creation of methods of temperature measurement.

The First such known system was the scale of Fahrenheit. German physicist Gabriel Fahrenheit in 1724, he proposed to take for 0 degree temperature of the melting mixture of ice and salt. On our usual scale, this is approximately -21O. 100O The scientist proposed to adopt the normal temperature of the human body. This system was not quite accurate, but is still used in the United States, because the frost stronger than the 21 degrees they did not happen.

What other temperature scale

17-18 th century is the time of the development of science and technology. Many scientists tried to create his temperature scale. By the end of the 18th century there were already about 20. But the use of steel only a few.

Reaumur Scale

Frantsuzskii physicist rené Antoine de Réaumur ferchaux suggested to use alcohol thermometers. In 1730 he took over the starting point 0O, the freezing point of water. But the temperature of the boiling, he took over the 80O. Because when the temperature changes by 1O A solution in alcohol, which he used in the thermometer, changed to 1 ml. It was
 uncomfortable, although this scale had long existed in France and in Russia.

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Celsius Scale

0 degree Celsius

It was proposed in 1742 the Swedish scientist Anders Celsius. The temperature scale was divided into 100O Between the freezing point and the boiling point of water. Celsius - still the most common worldwide unit of temperature.

Kelvin Scale

In the 19th century with the development of thermodynamics, the need arose to create a comfortable scale for calculations that would allow to relate the pressure, volume and temperature of steam. English physicist Thompson, who was named Lord Kelvin, suggested a starting point of absolute zero. Celsius was used to measure these two scales, there are still together.

How to create a scale to Celsius

First, the scientist suggested that for the 0O Considered the boiling point of water and the freezing point at 100O. Still we use to measure temperature degrees Celsius, though the idea belonged to Carlo Renaldini. He proposed to use the boiling point and freezing point of water in 1694.

The First thermometer based on the ideas of Celsius was applied by Carl Linnaeus in 1744 to monitor the plants. It was created by Daniel ekström, a great contribution in bringing the scale to the modern mind did scientist Martin Stremer. It is their first thermometer 0 degrees centigrade showing the temperature of the freezing point of water and 100O - point of its boiling point.

sign Celsius

This system was very comfortable and began to spread around the world. True, at first it was called "Extrema scale" or "scale of Stremer". And only in 1948 was it officially recognised, named Celsius and accepted worldwide.

Applying the scale Celsius

Now almost all countries use exactly this system of temperature measurement. Because the freezing point of water is the same in all corners of the globe and does not depend on pressure. And the water is the most common substance on Earth. So now every child known sign of the degree Celsius.


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ZH: https://tostpost.com/zh/education/4058-why-use-celsius.html






Alin Trodden - author of the article, editor
"Hi, I'm Alin Trodden. I write texts, read books, and look for impressions. And I'm not bad at telling you about it. I am always happy to participate in interesting projects."

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