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Alain Haché (born 14 December 1970, in Tracadie, New Brunswick) is an experimental physicist, a professor at the University of Moncton, Canada.〔 〕 From 2003 to 2013 he held the Canada Research Chair in Photonics.〔 (【引用サイトリンク】title=Canada Research Chair in Photonics – Alain Haché )〕 He is also the author of ''The Physics of Hockey'' and ''Slap Shot Science'', two popular science books on ice hockey.〔 〕 In 2002, he and undergraduate student Louis Poirier transmitted faster-than-light electrical pulses through a 120-metre long "photonic crystal" made of coaxial cables of alternating characteristic impedance (12 pairs of 50 Ω and 75 Ω cables).〔 〕〔 〕 The experiment showed that the pulse envelope was recreated at the end of the cables at a speed of >3 ''c''. Since this speed represents the group velocity but not the signal velocity, no energy or information was actually traveling faster than light. ==References== 抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)』 ■ウィキペディアで「Alain Haché」の詳細全文を読む スポンサード リンク
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