What is an international scale of temperature?
The International Temperature Scale (ITS) is a system of defining and
measuring temperature. It is used by scientists and engineers around the world
to ensure that temperature measurements are accurate and consistent.
The ITS is based on a set of reference points, which are temperatures that
have been precisely defined. These reference points are used to calibrate
thermometers and other temperature-measuring devices.
The ITS is updated periodically to reflect new scientific knowledge and
technological advances. The current version of the ITS is the International
Temperature Scale of 1990 (ITS-90).
The ITS-90 has 16 reference points, which cover the temperature range from
0.65 K to 1357.77 K. The reference points are chosen to represent a variety of
physical phenomena, including the phase transitions of water, the vaporization
of metals, and the emission of blackbody radiation.
The ITS-90 is a complex system, but it is essential for ensuring the accuracy
and consistency of temperature measurements. It is used in a wide variety of
applications, including:
- Calibrating thermometers
- Measuring the temperature of industrial processes
- Studying the properties of materials at extreme temperatures
- Conducting climate research
The ITS is a valuable tool for scientists and engineers around the world. It
helps to ensure that temperature measurements are accurate and consistent,
which is essential for many important applications.
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