Why are gun barrels rifled? Background to rifling Rifling consists of lands and grooves in the inside of a barrel‚ the lands are the part of the barrel which is not cut away while the grooves are the part of the barrel which is cut away. Lancaster oval bore‚ eight groove rifling and polygonal rifling are only a few example of rifling forms. Lancaster oval bore rifles have a smooth barrel interior. Unlike Lancaster oval bore rifles‚ grooved rifles have grooves which are engraved into the interior
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could observe quantum phenomena in normal. For quantum Hall effect‚ boundary is a crucial factor for creating quantum Hall effect. In conventional quantum Hall effect‚ the electrons move along the surface‚ shown in Fig. 2 (a). However‚ for quantum spin Hall effect‚ the electrons have
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reference to a cricket match of such importance. The game was prominent in London as early as 1707 and large crowds flocked to matches on the Artillery Ground in Finsbury. The single wicket form of the sport attracted huge crowds and wagers to match. Bowling evolved around 1760 when bowlers began to pitch the ball instead of rolling or skimming it towards the batsman. This caused a revolution in bat design because‚ to deal with the bouncing ball‚ it was necessary to introduce the modern straight bat in
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World Youth Complex Lebuh Ayer Keroh‚ Ayer Keroh 75450 Melaka‚ Malaysia Tel: +606-2321871‚ 2322711 World Assembly of Youth Assemblee Mondiale de la Jeunesse Asamblea Mundial de la Juventud Fax: +606-2327271 Email: office@way.org.my Website: www.way.org.my REPORT WAY 60TH ANNIVERSARY CELEBRATION “One Youth - One World‚ We Are the World” 10th -13th December 2009 Puteri Resort Ayer Keroh‚ Melaka‚ Malaysia Page | 1 The 60th WAY Anniversary Report: From London to Melaka‚ One Youth-One World: We are
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low-lying excited states of isolated LiCa and LiSr molecules using multi-state complete active space second-order perturbation theory (MS–CASPT2). The potential energy curves (PECs) and their corresponding spectroscopic constants‚ obtained at the spin-free (SF) and spin-orbit (SO) levels‚ agree well with available experimental values. Our SO–MS-CASPT2 calculation at the atomic limit (R = 100 a.u.) with the largest basis set reproduces experimental atomic excitation energies within 3% for both LiCa and LiSr
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University of Maryland‚ ―Introduction to Spintronics and Spin Quantum Computation‖ 18 Feb. 2009‚ < www.physics.umd.edu/rgroups/spin/intro.html> [15] Sarma‚ Sankar Das‚ ―Spintronics‖‚ American Scientist‚ pp.516 -523‚ Sigma Xi‚ The Scientific Research Society‚ North Carolina‚ November–December 2001 [16] Physics University of Maryland‚ ―Introduction to Spintronics and Spin Quantum Computation‖ 18 Feb. 2009‚ < www.physics.umd.edu/rgroups/spin/intro.html> [17] Pieter Kok‚ W.J. Munro‚ Kae Nemoto‚ T.C.
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Sports History and Sports Halls of Fame Below are websites dealing with sports history‚ particularly those halls of fame which exist. In the dead of winter‚ many people’s interest turn to sports‚ and the nominees and inductees are announced for many halls‚ including professional baseball and professional football. Professional Baseball Hall of Fame http://www.baseballhalloffame.org/ This website discusses the National Baseball Hall of Fame in Cooperstown‚ New York. The site combines
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