#thermometry

[materialsscienceandengineering]

From cryogenic to red-hot: Optical temperature sensing from 77 K to 873 K

An international collaboration involving researchers from the University of Innsbruck has developed a novel luminescent material that enables particularly robust and precise optical temperature sensing across an exceptionally broad temperature range. Optical luminescence thermometry has been gaining increasing attention, as it allows contactless temperature measurement even under extreme conditions. A key concept in this field is so-called ratiometric Boltzmann thermometry, in which the intensity ratio of two thermally coupled emission transitions directly follows the temperature. The performance of such thermometers crucially depends on the electronic structure of the luminescent ion and its incorporation into the host structure.

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[lindahall]

Anders Celsius – Scientist of the Day

Anders Celsius, a Swedish geographer and astronomer, was born Nov. 27, 1701.  

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[ftsharp]

In 1818, John Leslie invented a means of measuring the coldness of the night sky. Poetry by Tom Sharp.

[ftsharp]

In 1803, Louis-Bernard Guyton de Morveau calibrated his platinum pyrometer with a mercury thermometer and compared its results to the Wedgwood scale. Poetry by Tom Sharp.

[ftsharp]

In 1783, Josiah Wedgwood invented the first practical means of measuring high temperatures in a kiln. Poetry by Tom Sharp.

[ftsharp]

In 1759, James Ferguson invented a pyrometer to measure thermal expansion of metals. Poetry by Tom Sharp.

[etazsystems]

The Versatility of a Bimetallic Stemmed Thermometer: What’s it Used For? -

Integrating a bimetallic stemmed thermometer inside the eTAZ gadget brings benefits, often enhancing operational performance and safety.

[teachersource]

Daniel Fahrenheit was born on May 24, 1686. A physicist, inventor, and scientific instrument maker, he helped lay the foundations for the era of precision thermometry by inventing the mercury-in-glass thermometer (first widely-used, practical, accurate thermometer) and Fahrenheit scale(first standardized temperature scale to be widely used). In other words, Fahrenheit's inventions ushered in the first revolution in the history of thermometry (a branch of physics concerned with methods of temperature measurement).