Search results
Results From The WOW.Com Content Network
A magical Aether-infused alloy found on Esper, one of the five shards of the plane of Alara. [38] Most of Esper's inhabitants have parts of their body replaced by etherium. [ 39 ] It is also used to craft artifacts like the Filigree texts, sacred texts worked in etherium containing the Vedalken's accumulated knowledge.
Radium is the heaviest known alkaline earth metal and is the only radioactive member of its group. Its physical and chemical properties most closely resemble its lighter congener, barium. [4] Pure radium is a volatile, lustrous silvery-white metal, even though its lighter congeners calcium, strontium, and barium have a slight yellow tint. [4]
The c. 3rd–1st century BCE Chuci ("Songs of Chu") mentions the paired gems, "Shards and stones are prized as jewels / Sui and He rejected". This poetic anthology also says, "It grieves me that shining pearls [明珠] should be cast out in the mire / While worthless fish-eye stones are treasured in a strong-box", and describes a flying chariot ...
The longest half-lives among them are 1.387 million years for beryllium-10, 99.4 thousand years for calcium-41, 1599 years for radium-226 (radium's longest-lived isotope), 28.90 years for strontium-90, 10.51 years for barium-133, and 5.75 years for radium-228. All others have half-lives of less than half a year, most significantly shorter.
Radium oxide (RaO) has not been characterized well past its existence, despite oxides being common compounds for the other alkaline earth metals. Radium hydroxide (Ra(OH) 2) is the most readily soluble among the alkaline earth hydroxides and is a stronger base than its barium congener, barium hydroxide. [3]
It was originally thought to be radium, but has since been identified as zinc sulfide reacting with calcite in the limestone. The cave also contains a "musical rock", which resounds with a bell-like tone when struck. Indian Caverns was known about by European settlers from the late eighteenth century.
Radium dials are watch, clock and other instrument dials painted with luminous paint containing radium-226 to produce radioluminescence. Radium dials were produced throughout most of the 20th century before being replaced by safer tritium -based luminous material in the 1970s and finally by non-toxic, non-radioactive strontium aluminate ...
The decay-chain of uranium-238, which contains radium-226 as an intermediate decay product. 226 Ra occurs in the decay chain of uranium-238 (238 U), which is the most common naturally occurring isotope of uranium.