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2. Resistance thermometer - Wikipedia

   en.wikipedia.org/wiki/Resistance_thermometer

   The ice point is designated as a secondary standard because its accuracy is ±0.005 °C (±0.009 °F), compared to ±0.001 °C (±0.0018 °F) for primary fixed points. Comparison calibrations is commonly used with secondary standard platinum resistance thermometers and industrial RTDs. [4]

3. Hugh Longbourne Callendar - Wikipedia

   en.wikipedia.org/wiki/Hugh_Longbourne_Callendar

   The production of modern platinum thermometers were based on Callendar’s model with the accuracy continually improved on, such as more purified platinum and making them smaller. [11] His work on the platinum resistance thermometer gave way for the development of the rolling-chart thermometer, which permits the measurement of climatic ...

4. Scale of temperature - Wikipedia

   en.wikipedia.org/wiki/Scale_of_temperature

   The standard even compensates for the pressure effect due to how deeply the temperature probe is immersed into the sample. ITS–90 also draws a distinction between "freezing" and "melting" points. The distinction depends on whether heat is going into (melting) or out of (freezing) the sample when the measurement is made.

5. International Temperature Scale of 1990 - Wikipedia

   en.wikipedia.org/wiki/International_Temperature...

   These include helium vapor pressure thermometers, helium gas thermometers, standard platinum resistance thermometers (known as SPRTs) and monochromatic radiation thermometers. Although the Kelvin and Celsius temperature scales were (until 2019) defined using the triple point of water ( 273.16 K or 0.01 °C ), it is impractical to use this ...

6. Platinum - Wikipedia

   en.wikipedia.org/wiki/Platinum

   The resistance wire in the thermometer is made of pure platinum (NIST manufactured the wires from platinum bar stock with a chemical purity of 99.999% by weight). [ 77 ] [ 78 ] In addition to laboratory uses, Platinum Resistance Thermometry (PRT) also has many industrial applications, industrial standards include ASTM E1137 and IEC 60751.

7. List of temperature sensors - Wikipedia

   en.wikipedia.org/wiki/List_of_temperature_sensors

   The integrated circuit sensor may come in a variety of interfaces — analogue or digital; for digital, these could be Serial Peripheral Interface, SMBus/I 2 C or 1-Wire.. In OpenBSD, many of the I 2 C temperature sensors from the below list have been supported and are accessible through the generalised hardware sensors framework [3] since OpenBSD 3.9 (2006), [4] [5]: §6.1 which has also ...

8. The latest longevity trend? Social wellness clubs - AOL

   www.aol.com/latest-longevity-trend-social...

   The people you meet may even become your meditation buddies. Roll out a blanket and play a guided deep breathing exercise from YouTube or a meditation app. This story was produced by Hone Health ...

9. Temperature measurement - Wikipedia

   en.wikipedia.org/wiki/Temperature_measurement

   Resistance temperature detector (RTD) Pyrometer; Langmuir probes (for electron temperature of a plasma) Infrared thermometer; Other thermometers; One must be careful when measuring temperature to ensure that the measuring instrument (thermometer, thermocouple, etc.) is really the same temperature as the material that is being measured.