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Zircon (/ ˈ z ɜːr k ɒ n,-k ən /) [7] [8] [9] is a mineral belonging to the group of nesosilicates and is a source of the metal zirconium.Its chemical name is zirconium(IV) silicate, and its corresponding chemical formula is Zr SiO 4.
Wikipedia [c] is a free-content online encyclopedia written and maintained by a community of volunteers, known as Wikipedians, through open collaboration and the wiki software MediaWiki.
In United States education, a transcript is a copy of a student's permanent academic record, which usually means all courses taken, all grades received, all honors received and degrees conferred to a student from the first day of school to the current school year for high school, college and university. [2]
PERF 558, recto PERF 558, verso. PERF 558 is the oldest surviving Arabic papyrus, [1] found in Heracleopolis in Egypt, and is also the oldest dated Arabic text using the Islamic era, dating to 643. [2]
Edward Joseph Snowden (born June 21, 1983) is an American-Russian former NSA intelligence contractor and whistleblower [4] who leaked classified documents revealing the existence of global surveillance programs.
The Three Mile Island accident was a partial nuclear meltdown of the Unit 2 reactor (TMI-2) of the Three Mile Island Nuclear Generating Station.It happened on the Susquehanna River in Londonderry Township, near Harrisburg, Pennsylvania.
The final report was presented to the United States Senate on May 28, 1912. It was nineteen pages long, with 44 pages of exhibits, and summarised 1,145 pages of testimony and affidavits. [24] Its recommendations, along with those of the British inquiry that concluded on 3 July 1912, led to many changes in safety practices following the disaster ...
According to the Muslim belief and Islamic scholarly accounts, the revelation of the Quran to the Islamic prophet Muhammad began in 610 CE when the angel Gabriel (believed to have been sent by God) appeared to Muhammad (a trader in the Western Arabian city of Mecca, which had become a sanctuary for pagan deities and an important trading center) in the cave of Hira.