Eric Ansoborlo and Richard Wayne Leggett discuss the chemical and radiological characteristics that make caesium a captivating element but also a troublesome contaminant. The fifty-fifth element in ...

IIIF provides researchers rich metadata and media viewing options for comparison of works across cultural heritage collections. Visit the IIIF page to learn more. The 5071A Cesium Primary Frequency ...

Caesium (Cs) metal resembles rubidium and potassium. It is silvery white in appearance and is very soft and ductile. It is the most electropositive and most alkaline element. It oxidises easily in the ...

Caesium is the chemical element that has literally redefined time. All your life you'll have been told the importance of being on time. Well, thanks to caesium the entire world now keeps time so ...

You’ve given some thought to oxygen, carbon, uranium. But you’ve probably never mused about the element ytterbium, symbol Yb. A new study by scientists at the National Institute of Standards and ...