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The symbol √ is called the radical sign or radix. For example, the principal square root of 9 is 3, which is denoted by √ 9 = 3, because 3 2 = 3 • 3 = 9 and 3 is nonnegative. However raising x to the power of 0.5 using the y x key works if the number is entered as a real number with a complex part equal to zero. [11]
The 6 Li isotope is one of only five stable nuclides to have both an odd number of protons and an odd number of neutrons, the other four stable odd-odd nuclides being hydrogen-2, boron-10, nitrogen-14, and tantalum-180m. [27] 7 Li is one of the primordial elements (or, more properly, primordial nuclides) produced in Big Bang nucleosynthesis.
The power of education lay in its ability to serve as a great equalizer among the classes allowing the working class the ability to control their own destiny and compete with the upper classes. Mill recognised the paramount importance of public education in avoiding the tyranny of the majority by ensuring that all the voters and political ...
Deuterium is often represented by the chemical symbol D. Since it is an isotope of hydrogen with mass number 2, it is also represented by 2 H. IUPAC allows both D and 2 H, though 2 H is preferred. [8]
The Haber process, [1] also called the Haber–Bosch process, is the main industrial procedure for the production of ammonia. [ 2 ] [ 3 ] It converts atmospheric nitrogen (N 2 ) to ammonia (NH 3 ) by a reaction with hydrogen (H 2 ) using finely divided iron metal as a catalyst:
Andreas Georgiou Papandreou (Greek: Ανδρέας Γεωργίου Παπανδρέου, pronounced [anˈðreas papanˈðreu]; 5 February 1919 – 23 June 1996) was a Greek economist, politician, statesman and a dominant figure in Greek politics, known for founding the political party The Panhellenic Socialist Movement (), which he led from 1974 to 1996.
In 1929, with the onset of the Cultural Revolution in the Soviet Union and an upsurge of radical militancy in the Party and Komsomol, a powerful "hard line" in favor of mass closing of churches and arrests of priests became dominant and evidently won Stalin's approval. Secret "hard line" instructions were issued to local party organizations ...