rubidium

/roo-bid-ee-uhm/US // ruˈbɪd i əm //UK // (ruːˈbɪdɪəm) //

铷,镭射,铷元素,铷原子

Definitions

n.名词 noun

1
Chemistry.
- : a silver-white, metallic, active element resembling potassium, used in photoelectric cells and radio vacuum tubes. Symbol: Rb; atomic weight: 85.47; atomic number: 37; specific gravity: 1.53 at 20°C.

They then prepared rubidium atoms with spins aligned in a particular direction, and sent the atoms drifting toward the barrier.
In the Cold Atom Lab, rubidium atoms reached tenths of billionths of kelvins.
He picked up a shard of rubidium that served as a paper weight and toyed with it.
In rubidium the lines Rb and Rb in the blue, and Rb in the red are almost equally specific.
The separation of lithium, cæsium, and rubidium is seldom called for, owing to their rarity.
Cæsium and rubidium are separated from potassium by fractional precipitation with platinum chloride.
Rubidium occurs widely diffused in nature, but in very small quantities.