How is the temperature measured?
The temperature is the heat of the object, measured by its intensity or degree on a defined scale. Several scales are used to measure temperature and are the most common nowadays, Celsius, Fahrenheit and Kelvin. Note that the style wizard varies when using the upper or lower case K for Kelvin. Other temperature scales that are either little used or outdated include delisle, Newton, Rankine, Réaumur and Rømer. We will review the temperature scale in the chronological order, although the Celsius scale has undergone changes several hundred years after its initial invention, we will save them to the last. The Danish Astronomer Ole Christensen Rømer proposed a Rømer temperature scale in 1701, using the set points of the solace and boiling point of water at 60 years.
physicist named Fahrenheit has invented a scale that is currently used for unscientific temperature measurement in the United States, but almost every other detail is in dispute. RoseThe sources refer to him as Daniel or Daniel Gabriel or Gabriel; Let's say he was the Germans or that he was Polish - he seems to have been born in Gdansk in any case; He claims to set up his scale on the Rømer temperature scale, or that not; And it differs about what points he used and how he arrived. It can be said with certainty that the Fahrenheit scale was generally used for common measurements and cooking in English-speaking countries-although it has been replaced almost everywhere, but United stated Celsius-A that 32 ° F was a freezing point and 212 ° F point of the abdominal water on the current version.
French scientist René Antoine Ferchault de Réaumur 1731 Temperature-Zera called Point of freezing 0 and boiling point 8.
In 1848, British physicist and engineer William Thomson, 1. Baron Kelvin designed an absolute temperature scale and the Kelvin scale is named for it. Kelvin's degreeCE is part of the so -called "metric system", the international units of units or System International d'ités , abbreviated. It is formulated with regard to the absolute zero, which is 0 K (-273,15 ° C; -459,67 ° F) -note that the degree of symbol (°) is not used in Kelvin and that between the number and the symbol k.
Scottish physicist William John Macquorn Rankine developed a scale in 1859, also based on absolute zero, but here is the difference: while its 0 is the equivalent of absolute zero, the size of its degree is the equivalent Fahrenheit scale. Thus, the freeztelot of the point point on this scale is 491.67 ° R.
The Swedish astronomer Anders Celsius designed a temperature scale in 1742, which called the boiling and freezing water as a key conditions. The points were 100 degrees apart, with 100 degrees to stab frost point, while 0 degrees originally indicated a boiling point at a standard atmospheric pressure. Swedish botanist and doctor Carl Linnaeus suggested a conversion scale in 1744. At this point, the scale was called Centigrade , which means "100 degrees". Centigrade was a scale adopted by the International Library Commission and Measures in 1887. In 1948, the general conference on weights and measures (CGPM) changed the name to Celsius.
Do you want to convert between Celsius, Fahrenheit and Kelvin, use the following formulas:
If you do not need anything that accurate, in this set of mnemonic poems, the scheme of a rough conversion between Celsius and Fahrenheite: