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The hectare has a long association with the metric system, but its most recent status has created some ambiguity as to its future application. Richard Brown surveys the lay of the land.
Although its measurement was considered an experimental nightmare for decades, the Stefan–Boltzmann constant was assigned an exact value in 2019. Massimiliano Malgieri and Pasquale Onorato explain what this story teaches us.
Metrology and meteorology: just two letters separating two similar and frequently confused words. Andrea Merlone, Chiara Musacchio and Walter Bich tell us about these different disciplines and ways in which they collaborate.
Originally invented to improve cornering techniques in race driving, speed traps contribute to road safety. Robert Wynands introduces us to tools of traffic metrology.
Radionuclides have a myriad of applications, ranging from nuclear energy to environmental studies. Carine Michotte illustrates the importance of radionuclide metrology for nuclear medicine.
The unit one is a necessary part of any system of units but debate concerning its proper treatment in science and technology continues. Richard Brown enumerates its uses.
Despite their differences, the six regional metrology organizations work together to provide and advance the global equivalence of national measurements standards, as Hyun Min Park explains.
Single-photon detection is fundamental in many fields, including quantum technologies. Silvia Butera captures the developments of this detector technology.
The nautical mile and knot were acknowledged by the International Bureau of Weights and Measures. Bart Verberck wonders why this is not the case anymore.
Standards recommended by the International Organization for Standardization are often hidden in plain sight. Angelique Botha, Chair of ISO/TC 334 for Reference Materials, tells us where to look.
The SI prefixes provide an essential mechanism for the effective communication of scientific information. Richard Brown and Martin Milton inform us about the latest developments.
