Be on the lookout for your Britannica newsletter to get trusted stories delivered right to your inbox. The two base points of the scale are the melting point of ice and the boiling point of water, both at normal pressure. Microsoft Internet Explorer 6.0 does not support some functions on Chemie.DE. The Réaumur Scale (°Ré) The French entomologist and writer René Antoine Ferchault de Réaumur (1683–1757) contributed to many different fields, especially the study of insects. Find out more about the company LUMITOS and our team. In 1703 he came to Paris, where he continued the study of mathematics and physics, and in 1708, aged only twenty-four, based on his contributions to mathematics, esp. Réaumur to Fahrenheit. The Celsius scale is the most commonly used temperature scale and the standard used for most applications by the scientific community worldwide. Symbol: °F Description: It takes divisions between the freezing point of a solution of ammonium chloride (which is assigned zero value) and the human body's normal temperature (assigned to value 100). ›› Definition: Reaumur. Celsius conversion formula. Please refer to the appropriate style manual or other sources if you have any questions. The scale is named after René Antoine Ferchault de Réaumur, who first proposed something similar in 1730. The Réaumur temperature scale was proposed by René Antoine Ferchault de Réaumur in 1730, and it is based on the water tristate as well as Celsius, placing the 0 at the point when the liquid water freezes, and the value of 80 at the point when the liquid water boils. The boiling point of water is 100 °C. The Réaumur temperature scale is also known as the octogesimal division (division octogesimale in French).. Réaumur’s thermometer was constructed on the principle of taking the freezing point of water as 0°, and graduating the tube into degrees each of which was one-thousandth of the volume contained by the bulb and tube up to the zero mark. It is a unit typically used in the United States; wrongly associated to other English-speaking countries like the United Kingdom or Ireland, who use the Celsius scale. Celsius to Réaumur Temperature Scales Conversions. He learned philosophy in the Jesuits‘ college at Poitiers, and in 1699 went to Bourges to study civil law and mathematics. For calculating a temperature to Kelvin: K = 1.25 × °R + 273.15. Why 80 - because it was possible to bisect 4 times, and all the time receives an integer. Hence, for converting a temperature expressed in degrees Réaumur to degrees Celsius one multiplies the temperature in degrees Réaumur by 1.25 (In formula: °C = 1.25 × °R). Réaumur. The boiling point of water is 100 °C. The Réaumur (°Re) temperature scale (or octogesimal division) was widely used in parts of Europe in the 18th and 19th centuries; it later was used primarily to measure the temperature of mixtures during brewing, of syrups in the production of certain food products, and of milk…. Using the stated formula, you first multiply the Celsius scale temperature reading by nine-fifths and get a result of 180. Réaumur temperature scale, scale established in 1730 by the French naturalist René-Antoine Ferchault de Réaumur (1683–1757), with its zero set at the freezing point of water and its 80° mark at the boiling point of water at normal atmospheric pressure. Comparison of temperature scales; Comment Kelvin Celsius Fahrenheit Rankine Delisle Newton Réaumur Rømer; Absolute zero: 0.00 −273.15 −459.67 0.00 559.73 −90.14 −218.52 −135.90 Lowest recorded surface temperature on … Its unit is represented with °Ré, with °Re, and sometimes with °r after the value. The Celsius or centigrade temperature scale is based on the water tristate, placing the 0 at the point when the liquid water becomes ice, and the 100 at the point when the liquid water becomes gas, both at 1 atm pressure. https://www.britannica.com/science/Reaumur-temperature-scale. The Réaumur scale (°Ré, °Re, °R) is a temperature scale named after René Antoine Ferchault de Réaumur, who first proposed it in 1731. Réaumur was born on February 28, 1683 as son of a judge into a prominent La Rochelle family and educated in Paris. Réaumur temperature scale, scale established in 1730 by the French naturalist René-Antoine Ferchault de Réaumur (1683–1757), with its zero set at the freezing point of water and its 80° mark at the boiling point of water at normal atmospheric pressure. Ring in the new year with a Britannica Membership. It has also had some wide use in scientific communities but is of no practical use in other areas of measurement. Our editors will review what you’ve submitted and determine whether to revise the article. to geometry, was nominat… The Celsius scale is the most commonly used temperature scale and the standard used for most applications by the scientific community worldwide. Desired scale Formula kelvin K = °N × 100/33 + 273.15 Celsius °C = °N × 100/33 Fahrenheit °F = °N × 60/11 + 32 Rankine °Ra = °N × 60/11 + 491.67 Delisle °De = (33 − °N) × 50/11 Réaumur °Ré = °N × 80/33 Rømer °Rø¸ = °N × 35/22 + 7.5 There is a chart below the converter and formulae that displays at a glance the important ranges of each scale. Then add 32 to 180 and get the final converted result of 212 degrees on the Fahrenheit scale. Celsius. He invented the thermometric scale that bears his name (see thermometry); on the Réaumur scale, 0° marks the freezing point of… While every effort has been made to follow citation style rules, there may be some discrepancies. While every effort is made to ensure the accuracy of the information provided on this website, neither this website nor its authors are responsible for any errors or omissions, or for the results obtained from the use of this information. Réaumur Rømer Comparison of temperature scales. Kelvin, Réaumur, and Rankine a °C = (4/5)a °Réaumur = [32 + (9/5)a] °F Réaumur scale (Réaumur, °Ré, °Re) Was created by René Antoine Ferchault de Réaumur in 1730. Assume that you have a Celsius scale temperature of 100 degrees and you wish to convert it into degrees on the Fahrenheit scale. The Réaumur scale is a temperature scale named after René Antoine Ferchault de Réaumur, who first proposed it in 1731. The scale was used some parts of Europe until the mid-19th century, and in parts of Russia until the early 20th century. It was the dilatability of the particular quality of alcohol employed which made the boiling point of water 80°. the ‘spirit of wine’) as the thermometric liquid. Scara Réaumur a avut o largă utilizare în Europa, în special în Franța și Germania precum și în Rusia, așa cum reiese din operele literare ale lui Dostoievski, Tolstoi, și Nabokov. Find out how LUMITOS supports you with online marketing. Începând cu anii 1790, Franța înlocuiește scara Réaumur cu scara metrică Celsius. Convert to degrees réaumur (°Ré) Degrees celsius 1 °C = 0.8 °Ré Degrees fahrenheit 1 °F = -13.777777777778 °Ré Kelvins 1 K = -217.72 °Ré Degrees rankine 1 °R = -218.07555555556 °Ré Degrees delisle 1 °De = 79.466666666667 °Ré Degrees newton 1 °N = 2.4242424242424 °Ré Degrees réaumur 1 °Ré = 1 °Ré Degrees rømer Convert Celsius (°C) to Réaumur (°Ré) and Réaumur (°Ré) to Celsius (°C) Formula's used in the conversions: °Ré * 1.25 = °C °C * 0.8; = °Ré Celsius to Réaumur. Reverse formula and conversion (Réaumur to Celsius) Celsius. Your browser does not support JavaScript. Celsius to Réaumur. Corrections? It was very fashionable among the French. 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