Radium
Radium is a chemical element with symbol Ra and atomic number 88. It is the sixth element in group 2 of the periodic table, also known as the alkaline earth metals. Pure radium is almost colorless, but it readily combines with nitrogen (rather than oxygen) on exposure to air, forming a black surface layer of radium nitride (Ra3N2). All isotopes of radium are highly radioactive, with the most stable isotope being radium-226, which has a half-life of 1600 years and decays into radon gas (specifically the isotope radon-222). When radium decays, ionizing radiation is a product, which can excite fluorescent chemicals and cause radioluminescence.
Radium, in the form of radium chloride, was discovered by Marie Curie and Pierre Curie in 1898. They extracted the radium compound from uraninite and published the discovery at the French Academy of Sciences five days later. Radium was isolated in its metallic state by Marie Curie and André-Louis Debierne through the electrolysis of radium chloride in 1910.
Radium (disambiguation)
Radium is a chemical element with atomic number 88.
Radium may also refer to:
See also
Radium (software)
Radium is a proprietary Internet radio player application, used for listening to internet radio streams. It emphasizes a minimalist user interface. The application does not have a main window, instead opting to provide the entire user interface through its main menu. Users can either listen to Radium's built-in selection of internet radio networks, or add their own networks provided that the their stream URL's are known. The program has been praised for its unobtrusiveness, low system resource usage, and intuitive user interface, but has also been criticized for its lack of recording functionality as of version 2.5.1.
Radium is available as a free 30-day trial for Mac OS X, after which users are required to buy a license for $9.99 USD to continue using the program; minor updates are free for all users.
Features
.biz
biz is a generic top-level domain (gTLD) in the Domain Name System of the Internet. It is intended for registration of domains to be used by businesses. The name is a phonetic spelling of the first syllable of business.
History
The biz TLD was created to relieve some of the demand for domain names in the com top-level domain, and to provide an alternative for businesses whose preferred domain name in com had already been registered by another party. There are no specific legal or geographic qualifications to register a biz domain name, except that it must be for "bona fide business or commercial use." It was created in 2001 along with several other domains as the first batch of new gTLDs approved by ICANN in the expansion of the Domain Name System following the increased interest in internet commerce in the late 1990s. The TLD is administered by NeuStar and registrations are processed via accredited registrars.
In contrast to other newly installed top-level domains, the biz registry did not implement a sunrise period to grant trademark owners first chance at registration, but instead used a procedure whereby they could file intellectual property claims in advance and then challenge any eventual registrant through a policy named Startup Trademark Opposition Policy (STOP). A number of domains were successfully obtained by trademark owners from other registrants through this policy; some of the more controversial cases, where generic words were taken over based on trademark claims in a process deemed "reverse hijacking" by critics, included that of paint.biz and Canadian.biz, the latter being reversed by a court decision.
Bizë
Bizë is a village in the former municipality of Shëngjergj in Tirana County, Albania. At the 2015 local government reform it became part of the municipality Tirana.
References
Biz
Biz, BIZ or The Biz may refer to:
Podcasts:
