The changing world of #metrology.

"Scientists said the region was missing about 650,000 sq kilometres (250,000 sq miles) of sea ice, compared with the average between 1991 and 2020. That is an area about the size of France and almost 10 times the size of Tasmania."

What! No Wales?

https://www.theguardian.com/world/2026/jun/13/antarcticas-west-coast-missing-an-area-of-sea-ice-the-size-of-france-as-temperatures-peak-20c-above-average

#LightPollution research spans many fields, but progress is slowed because astronomers, ecologists, and lighting engineers use different rulers to measure the same night sky. This communication breakdown complicates how we manage outdoor lighting as a shared public resource.

Read more about why clearing up these discrepancies eliminates misunderstandings and gives city planners the precise data needed for better policy: https://www.darkskyconsulting.com/blog/the-language-of-light-standardizing-light-pollution-measurements

#DarkSkies #Metrology #Standards

🧲❓ The gravitational constant “Big G” has been part of #physics since 1687, but after 17 modern measurements, scientists still can’t agree on its exact value.

At #NIST in #Maryland, physicist Stephan Schlamminger spent a decade trying – even resorting to a sealed-envelope #experiment to avoid subconscious bias. His team’s result slightly disagrees with the accepted value, keeping the #mystery alive.

👉 https://www.space.com/science/one-of-the-great-unresolved-embarrassments-of-physics-its-been-340-years-since-newton-and-scientists-still-havent-solved-the-secret-of-gravity

#gravity #newton #science #metrology #space #education #stem

Happy World Metrology Day, 20 May, 2026. 2026 Theme: "Metrology: Building Trust in Policy Making". This year, we celebrate the 151st anniversary of the signing of the Metre Convention - a milestone that underscores a century and a half of international collaboration in measurement science.

#worldmetrologyday #metrology #metreconvention #measurements #measurement #internationalsystemofunits #systèmeinternationaldunités #metricsystem #raiseawareness #raisingawareness #sofiaflorina #ソフィアフロリナ