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Frequency allocation. Frequency allocation (or spectrum allocation) is the part of spectrum management dealing with the designation and regulation of the electromagnetic spectrum into frequency bands, normally done by governments in most countries. [ 1] Because radio propagation does not stop at national boundaries, governments have sought to ...
Ethnologue (2023) The following languages are listed as having 45 million or more total speakers in the 26th edition of Ethnologue published in 2023. [ 4] This section does not include entries that Ethnologue identifies as macrolanguages encompassing all their respective varieties, such as Arabic, Lahnda, Persian, Malay, Pashto, and Chinese .
John Pierpont Morgan (April 17, 1837 – March 31, 1913) [1] was an American financier and investment banker who dominated corporate finance on Wall Street throughout the Gilded Age and Progressive Era. As the head of the banking firm that ultimately became known as J.P. Morgan and Co., he was a driving force behind the wave of industrial ...
Brazil, [ b] officially the Federative Republic of Brazil, [ c] is the largest and easternmost country in South America and Latin America. It is the world's fifth-largest country by area and the seventh most populous. Its capital is Brasília, and its most populous city is São Paulo.
The banana plant is the largest herbaceous flowering plant. [2] All the above-ground parts of a banana plant grow from a structure called a corm . [ 3 ] Plants are normally tall and fairly sturdy with a treelike appearance, but what appears to be a trunk is actually a pseudostem composed of multiple leaf-stalks ( petioles ).
Graphene ( / ˈɡræfiːn / [ 1]) is a type of allotrope of carbon consisting of a single layer of atoms arranged in a honeycomb [ 2][ 3] nanostructure. [ 4] The name is derived from "graphite" and the suffix -ene, reflecting the fact that the graphite allotrope of carbon contains numerous double bonds. Each atom in a graphene sheet is ...
The pure ruggedness of this area is caused by torrential downpours for four months of the year, combined with an intense summer season of scorching heat that cracks the ground. Vegetation is scarce and consists of low, thorny shrubs. The hillsides along the pass are covered in thick brush, with some plants reaching 10 feet (3.0 m) high.
7 October 2001 – 30 August 2021. (19 years, 10 months, 3 weeks and 2 days) First phase: 7 October 2001 – 28 December 2014. Second phase: 1 January 2015 – 30 August 2021 [ 34][ 35] Location. Afghanistan [ a] Result. Taliban victory [ 36] Islamic State–Taliban conflict and insurgency in Khyber Pakhtunkhwa continues.