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China Railway Engineering Equipment Group announced that a recor-setting tunnel-boring machine is ready to be delivered to Italy for use in the Napoli-Bari High-Speed Railway. It is the largest machine of its kind to be exported to Europe from China. ....
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SCIENCEALERT STAFF Pi (π) is a constant describing the ratio between a circle s circumference and its diameter. It is an irrational number usually summarized to two decimal places as 3.14. The Greek letter for P was chosen by the 18th century Welsh mathematics teacher William Jones, most likely to stand for periphery .
Symbolically, the term pi was chosen to stand for something more than a mere number. Prior to its use in the early 18th century, the quantity was represented by terms and fractions, none of which adequately reflected an incomprehensible, infinitely long sequence of non-repeating decimals. Jones might have suspected that the exact proportion between the diameter and the circumference can never be expressed in numbers , but it wasn t until the 1760s that the Swiss polymath Johann Lambert came up with a proof of its irrationality. ....
Light Reading is for communications industry professionals who are developing and commercializing services and networks using technologies, standards and devices such as 4G, smartphones, SDN, network virtualization, 100G optical, IP, Ethernet, Big Data, FTTH, DOCSIS and video platforms. ....