Scale termometriche celsius kelvin fahrenheit reaumur biography

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Nonetheless, understanding the Réaumur scale can be valuable for historians, scientists, and students studying the history of temperature measurement and the development of different temperature scales.

Réaumur scale

If you have a thermometer with a large bulb filled with alcohol(but not 200 proof, it’s mixed with water, who knows how much),and the zero of your scale is at the point where water freezesand it takes eight percent of the alcohol in the bulb and tube up to zeroto expand with the temperature to the point where the alcohol boils,then you have duplicated the scale of de Réaumur.Otherwise, René Antoine Ferchault de Réaumuris known as a mathematician who improved steelmaking,and analyzed the differences between iron and steeland developed a method of coating iron with tin,who described a method of incubating eggs,studied the relation between temperature and the growth of insects,who wrote about spiders and starfish and corals(proving that corals are animals and not plants),and published multiple volumes on the the natural historyof moths and caterpillars, bees, ants, flies, earwigs,parasites, and other insects.

Shortcomings

The Réaumur thermometers were no goodfor temperatures greater than the boiling pointof alcohol, which would depend on the kind of alcohol.And their large bulbs made them too bigto fit under a tongue.

It was commonly employed in laboratories for scientific experiments and research, as well as in various industries such as brewing, metallurgy, and glass manufacturing. Moreover, today, outsideof certain cheesemakers in Italy and Switzerland,few could tell you how warm 25 °Ré is,(although I can say it wouldn’t be too far from 25 °C).

Imitators

You have not made a Réaumur scaleby using a bulb of mercury and measuringeighty degrees to the boiling point of water,which apparently some have claimed to do.

However, the zero point and the boiling point on the Réaumur scale are different from those on the Celsius scale.

To convert temperatures between Réaumur and Celsius, one can use the formula: °C = (°Ré - 0) × 5/4.

Origin:

The Réaumur scale, also known as the "octogesimal division," is a temperature scale named after René Antoine Ferchault de Réaumur, a French scientist and inventor.

Réaumur temperature scale

Réaumur temperature scale is a historical temperature scale introduced in 1730 by the French naturalist René Réaumur.

He divided the range between these two points into 80 equal parts, with the freezing point set at 0° Réaumur and the boiling point at 80° Réaumur. Réaumur was born on February 28, 1683, in La Rochelle, France. While it may still be encountered in some older literature or historical documents, the Réaumur scale has been largely replaced by the Celsius scale, which is more widely understood and used across the globe.

Definition:

The Réaumur is a unit of temperature measurement named after René Antoine Ferchault de Réaumur, a French scientist who proposed the scale in the early 18th century.

edition. Vydavatelství VŠCHT, 2004. 264 pp. ISBN 80-7080-535-8.

Réaumur conversion (ºRé)

Réaumur

Worldwide use:

The Réaumur scale, named after the French scientist René Antoine Ferchault de Réaumur, was once a widely used unit of temperature measurement in Europe.

scale termometriche celsius kelvin fahrenheit reaumur biography

While 0° Celsius represents the freezing point of water and 100° Celsius represents the boiling point, 0° Réaumur is slightly colder than the freezing point and 80° Réaumur is slightly hotter than the boiling point.

Although the Réaumur scale was widely used in Europe during the 18th and 19th centuries, it has since been largely replaced by the Celsius scale in most countries.

However, it gradually fell out of favor as the Celsius and Fahrenheit scales gained prominence. It uses the same reference points as the Celsius temperature scale, i.e. Introduced in the early 18th century, it gained popularity in countries such as France, Germany, and Russia. He made significant contributions to various fields, including entomology, zoology, and physics, but he is best known for his work in thermometry.

Réaumur developed his temperature scale in 1730, based on the freezing and boiling points of water.

The scale provided a convenient and practical way to measure temperature in these settings, allowing for accurate control and monitoring of processes.

With the advent of the Celsius and Fahrenheit scales, the usage of the Réaumur scale gradually declined. It was still used in the Czech lands in the 1930s. Today, the Réaumur scale is rarely used, except in historical contexts or in specific industries that still rely on its measurements.

Common references:

Freezing point of water = 0°Ré

Boiling point of water = 80°Ré

Usage context:

The Réaumur scale was primarily used in scientific and industrial contexts during its heyday.

Compared to the Celsius scale, however, it divides this interval into eighty parts. This scale gained popularity in Europe, particularly in France and Germany, during the 18th and 19th centuries.

The Réaumur scale was widely used in scientific research and engineering applications, especially in the fields of brewing, distilling, and metallurgy.

The Réaumur scale is based on the freezing and boiling points of water, with 0° Réaumur representing the freezing point and 80° Réaumur representing the boiling point at standard atmospheric pressure.

The Réaumur scale is similar to the Celsius scale, with both scales having the same size of degree. This makes the conversion between the Réaumur and Celsius scale values very simple:

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Suggested literature[edit | edit source]

MALIJEVSKÁ, Ivona – MALIJEVSKÝ, Anatol – NOVÁK, Josef. Záhady, klíče, zajímavosti očima fyzikální chemie. 1.

The Celsius scale, which is now the standard unit of temperature measurement in most countries, offers a more practical and universally applicable system.
Today, the Réaumur scale is rarely used outside of historical or academic contexts. the melting and freezing point of water at normal atmospheric pressure.