Black-body radiometry

VI Sapritsky - Metrologia, 1995 - iopscience.iop.org
Radiometry based on black bodies remains one of the fundamental fields of radiometry.
Black bodies are widely used as standard sources in radiometry of noncoherent optical …

Physico-Mechanical Metrology: Part IV: Force, Pressure and Flow Metrology

S Yadav, SSK Titus, R Kumar, I Elizabeth… - Metrology for Inclusive …, 2020 - Springer
Accurate and precise measurements of physico-mechanical quantities, such as Force,
Torque, Hardness, Pressure, Vacuum and Fluid Flow are extremely important and crucial in …

Large-area Fe–C eutectic fixed-points for radiation and contact thermometry

M Can, C Gözönünde, N Arifoviç, F Yıldız… - Measurement …, 2023 - iopscience.iop.org
Abstract High-quality metal (carbide)–carbon eutectic materials based on high-temperature
fixed points (HTFPs) are widely used in radiometry and thermometry as reference standards …

Realization of ITS-90 Radiance Temperature Scale from 961.78° C to 3000° C at CSIR-NPL

U Pant, G Gupta, H Meena, A Bhatt, K Bapna… - MAPAN, 2021 - Springer
The traceable temperature measurements using the radiation thermometers and thermal
imagers above 1000° C require blackbody fixed points and extrapolation or interpolation of …

Direct observation of plateau progression in fixed-point blackbodies via X-ray imaging

T Fujiwara, Y Shimizu, J Ishii - Japanese Journal of Applied …, 2024 - iopscience.iop.org
In this study, we address the challenge of calibrating radiation thermometers using
blackbody furnaces that employ a metal melting/freezing plateau. Here, we first present the …

Improved realization of ensemble of triple point of water cells at CSIR-NPL

Babita, U Pant, H Meena, G Gupta, K Bapna… - Mapan, 2021 - Springer
Kelvin (K) is SI base unit of thermodynamic temperature. In its 26th meeting held on Nov
2018, General Conference on Weights and Measures (CGPM) has approved the redefinition …

Development of Nickel–Carbon Eutectic Fixed Point Cell for Thermocouple Thermometry

A Bhatt, U Pant, H Meena, G Gupta, K Bapna… - MAPAN, 2023 - Springer
The novel materials of different phase transition temperatures are exploited in thermometry
as defined fixed points to form the International Temperature Scales (ITS). In the high …

Physico-mechanical metrology: part III: thermal, optical radiation and acoustic metrology

S Yadav, DD Shivagan, K Bapna, VK Jaiswal… - Metrology for inclusive …, 2020 - Springer
This chapter describes the three physico-mechanical metrology streams; temperature and
humidity, optical radiation and acoustic and vibration metrology. Among the seven base SI …

Absolute Primary Radiometric Thermometry

V Sapritsky, A Prokhorov, V Sapritsky… - … Radiometry: Volume 1 …, 2020 - Springer
Absolute primary radiometric thermometry is a recently introduced term for an approach to
measuring the thermodynamic temperature of a blackbody using the accurate determination …

Quantum Definition of New Kelvin and Way Forward

Babita, U Pant, DD Shivagan - Handbook of Metrology and Applications, 2023 - Springer
In the efforts of redefining the SI units with fundamental constants of nature, kelvin (K), the SI
unit of thermodynamic temperatures (T), was redefined based on the Boltzmann constant (k) …