A new method of absolute temperature measurements

1960 ◽  
Vol 3 (5) ◽  
pp. 397-402 ◽  
Author(s):  
A. D. Brodskii ◽  
A. V. Savateev
Keyword(s):  
Absolute Temperature ◽  
Temperature Measurements ◽  
New Method

A new method for atom temperature measurements in plasmas

1980 ◽  
Vol 23 (1) ◽  
pp. 232 ◽  
Author(s):  
G. Gouesbet ◽  
P. Valentin
Keyword(s):  
Temperature Measurements ◽  
New Method ◽  
Atom Temperature

scholarly journals Retrieval of temperature from a multiple channel pure rotational Raman backscatter lidar using an optimal estimation method

2019 ◽  
Vol 12 (11) ◽  
pp. 5801-5816 ◽  
Author(s):  
Shayamila Mahagammulla Gamage ◽  
Robert J. Sica ◽  
Giovanni Martucci ◽  
Alexander Haefele
Keyword(s):  
Estimation Method ◽  
Optimal Estimation ◽  
Uncertainty Budget ◽  
Temperature Measurements ◽  
New Method ◽  
Retrieval Algorithm ◽  
Coupling Constant ◽  
Raman Lidar ◽  
Multiple Channel ◽  
Lidar Measurements

Abstract. We present a new method for retrieving temperature from pure rotational Raman (PRR) lidar measurements. Our optimal estimation method (OEM) used in this study uses the full physics of PRR scattering and does not require any assumption of the form for a calibration function nor does it require fitting of calibration factors over a large range of temperatures. The only calibration required is the estimation of the ratio of the lidar constants of the two PRR channels (coupling constant) that can be evaluated at a single or multiple height bins using a simple analytic expression. The uncertainty budget of our OEM retrieval includes both statistical and systematic uncertainties, including the uncertainty in the determination of the coupling constant on the temperature. We show that the error due to calibration can be reduced significantly using our method, in particular in the upper troposphere when calibration is only possible over a limited temperature range. Some other advantages of our OEM over the traditional Raman lidar temperature retrieval algorithm include not requiring correction or gluing to the raw lidar measurements, providing a cutoff height for the temperature retrievals that specifies the height to which the retrieved profile is independent of the a priori temperature profile, and the retrieval's vertical resolution as a function of height. The new method is tested on PRR temperature measurements from the MeteoSwiss RAman Lidar for Meteorological Observations system in clear and cloudy sky conditions, compared to temperature calculated using the traditional PRR calibration formulas, and validated with coincident radiosonde temperature measurements in clear and cloudy conditions during both daytime and nighttime.

Absolute temperature measurements using a two-color QWIP focal plane array

2010 ◽  
Author(s):  
Jason Bundas ◽  
Richard Dennis ◽  
Kelly Patnaude ◽  
Douglas Burrows ◽  
Ross Faska ◽  
...  
Keyword(s):  
Focal Plane ◽  
Focal Plane Array ◽  
Absolute Temperature ◽  
Temperature Measurements

scholarly journals Investigation of Non-invasive Continuous Body Temperature Measurements in a Clinical Setting Using an Adhesive Axillary Thermometer (SteadyTemp®)

2021 ◽  
Vol 3 ◽  
Author(s):  
Johannes Boyer ◽  
Jakob Eckmann ◽  
Karl Strohmayer ◽  
Werner Koele ◽  
Moritz Federspiel ◽  
...  
Keyword(s):  
Body Temperature ◽  
Smartphone Application ◽  
Underlying Disease ◽  
Absolute Temperature ◽  
Temperature Measurements ◽  
Individual Factors ◽  
Multicentric Study ◽  
Non Invasive ◽  
Body Temperature Measurement ◽  
The Individual

Since the human body reacts to a variety of different diseases with elevated body temperature, measurement of body temperature remains relevant in clinical practice. The absolute temperature value for fever definition is still arbitrary and depends on the measuring site, as well as underlying disease and individual factors. Hence, a simple threshold for fever definition is outdated and a definition which relies on the relative changes in the individual seems reasonable as it takes these individual factors into account. In this prospective multicentric study we validate an adhesive axillary thermometer (SteadyTemp®) which allows continuous non-invasive temperature measurements. It consists of a patch to measure temperature and a smartphone application to process and visualize gathered data. This article provides information of the new diagnostic possibilities when using this wearable device and where it could be beneficial. Furthermore, it discusses how to interpret the generated data and when it is not practical to use, based on its characteristics and physiological phenomena.

Thermal Investigations on CMOS Integrated Micro-Hot-Plates Using IR Thermography

2012 ◽  
Author(s):  
Christian Schmidt ◽  
Frank Altmann ◽  
Giorgio C. Mutinati ◽  
Elise Brunet ◽  
Stephan Steinhauer ◽  
...  
Keyword(s):  
Thermal Behaviour ◽  
Absolute Temperature ◽  
Temperature Measurements ◽  
Coating Process ◽  
Ir Thermography ◽  
Black Paint ◽  
Paint Coating ◽  
Thermal Investigations

Abstract In this paper, investigations on absolute temperature measurements using IR-Thermography of CMOS integrated micro-hot-plates (μHP) are presented. The results of using two different approaches, emissivity correction and black paint coating, are presented and compared with respect to simulation and electrical testing results. In addition, FIB/SEM investigations were used for surface investigations and determination of possible influences to the thermal behaviour by black paint coating process.

Miniature fiber-optic sensor based on Si microresonator for absolute temperature measurements

2020 ◽  
Vol 316 ◽  
pp. 112385
Author(s):  
Petr Volkov ◽  
Daniil Semikov ◽  
Аlexander Goryunov ◽  
Аndrey Luk'yanov ◽  
Аnatoly Tеrtyshnik ◽  
...  
Keyword(s):  
Fiber Optic ◽  
Absolute Temperature ◽  
Temperature Measurements ◽  
Fiber Optic Sensor ◽  
Optic Sensor

A STUDY OF THE COEXISTENCE OF THE LIQUID AND GASEOUS STATES OF AGGREGATION IN THE CRITICAL TEMPERATURE REGION. ETHANE

1940 ◽  
Vol 18b (4) ◽  
pp. 103-117 ◽  
Author(s):  
S. G. Mason ◽  
S. N. Naldrett ◽  
O. Maass
Keyword(s):  
Critical Temperature ◽  
Temperature Region ◽  
Coexistence Curve ◽  
Absolute Temperature ◽  
Temperature Measurements ◽  
Careful Study ◽  
Physical Measurement ◽  
Relative Temperature ◽  
Density Measurements ◽  
Parabolic Shape

A careful study has been made of the position and nature of the meniscus and the distribution of opalescence in bombs containing ethane as the critical temperature is approached. Photographs of the phenomena have been made. The effect of shaking has been observed, and a type of shaking is described that is believed to hasten the attainment of equilibrium between the liquid and vapour phases. Using this type of stirring the coexistence curve of ethane has been determined. Relative temperature measurements are accurate to within ± 0.001 ° C.; absolute temperature measurements, to within ± 0.015 °C. Density measurements are believed accurate to within 1:3000. The limiting curve has the classical parabolic shape up to 32.23 °C., at which point the slope changes abruptly and the curve becomes flat along the density axis. The authors believe that at this temperature a dispersion of liquid and vapour occurs and that liquid still persists above this temperature. It is shown that the critical temperature as ordinarily determined in a stationary bomb cannot be accurately determined. The critical temperature can be determined precisely and without ambiguity when the bomb is shaken, and it is recommended that the value obtained in this way be used instead, as a physical measurement.

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