Supplementary Information for the International Temperature Scale of 1990.
The SPRTs used for the establishment of the temperature scale at METROSERT Manufacturer Type Calibration at Calibration fixed points uncertainty (mK) at fixed points (k = 2) Isotech 610, Pt25, Hg, [H.
The Thermometry Group of NIST has the responsibility to develop, establish, and maintain the standards for temperature measurements in the region of contact thermometry (below 1235 K) that are necessary for the Nation's industrial and scientific progress and, in cooperation with other national laboratories, help establish international uniformity in temperature measurements and promulgate the adopted International Temperature Scale
New measurements were therefore undertaken in four laboratories to calibrate a number of platinum rhodium/platinum thermocouples with reference to the new international temperature scale
In addition, the NIST team developed methods for calibrating their thin-film thermocouples on the international temperature scale
, achieving an uncertainty of about 0.
Examples of specific topics covered include aircraft electrification, airmass, anabatic wind, boundary layer, convection, Dansgaard-Oeschger event, Dobson spectrophotometer, gradient wind, katabatic wind, meteorology, noble gases, pollution control, temperature scales
, waterspout, and Venturi effect.
Confrontations over the fixity of temperature scales
and their inter-comparisons continued until the work of Henri Victor Regnault in the 1840's who applied only the test of comparability, that is, self consistency to thermometers, introducing the principle of single-valuedness into thermometry.
Potters use either Centigrade or Fahrenheit temperature scales
This data is then displayed as a graphical profile with position and temperature scales
or as a colored line representing cross-curtain temperature variations.
Features of the new BARA-PRESS(TM) release include an on-line user manual, user selectable pressure scales (PSI, ATA, kPA, BAR, MSW, FSW), and temperature scales
(Celsius and Fahrenheit).
5 software includes product enhancements as well as new features for both the Basic and Professional Series of Internet-enabled Thermostats, including Fahrenheit or Celsius temperature scales
, and secure password authentication for direct access to the product web pages.
The product also includes interactive simulations and experiments such as: planetary motion showing earth and moon rotation around the sun; molecular motion; acoustic music and sound wave simulation; and a simulation contrasting Kelvin, Fahrenheit and Celsius temperature scales