標題: EVER SEEN A RIVER OVER A RIVER? [打印本頁] 作者: lilitan008 時間: 2011-10-2 10:09 PM 標題: EVER SEEN A RIVER OVER A RIVER?
本帖最後由 lilitan008 於 2011-10-3 12:57 PM 編輯 TVBNOW 含有熱門話題，最新最快電視，軟體，遊戲，電影，動漫及日常生活及興趣交流等資訊。7 @5 `* Y; l( U4 V' V/ A6 X
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If you are not a Physics person, read on and learn a fact of physics. / w$ @* D2 A) U+ v1 ~
AMAZING! tvb now,tvbnow,bttvb, U) Y8 ~, a/ P2 T( G 公仔箱論壇3 z/ H6 y2 r3 z, C4 i: Z
Even after you see it, it is still hard to believe! , W! [1 _; u& P& d4 v; B3 Q) z& q[attach]1486499[/attach] 4 T M- z$ n8 W) s" Q; qTVBNOW 含有熱門話題，最新最快電視，軟體，遊戲，電影，動漫及日常生活及興趣交流等資訊。, M/ Z8 V4 ?+ Y7 a
Magdeburg Water Bridge in Germany What a feat! Six years, 500 million euros, 918 meters long. Now this is engineering! " c) f4 n6 k5 z E4 Q( c9 q公仔箱論壇This is a channel-bridge over the River Elbe and joins the former East and West Germany as part of the unification project. $ B1 t6 e& ?7 c$ h* j# q
It is located in the city of Magdeburg, near Berlin. 7 q" w# v, f9 M4 i0 J+ ~公仔箱論壇 ) _8 V4 m6 V) w5 VThe photo was taken on the day of inauguration. 0 X% g8 O: X) F: n$ yTVBNOW 含有熱門話題，最新最快電視，軟體，遊戲，電影，動漫及日常生活及興趣交流等資訊。To those who appreciate engineering projects, here's a puzzle for you armchair engineers and physicists.公仔箱論壇* ^4 d3 s r; |* m& O, Q+ I- F
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Question: * F8 Q' \# x( j% [6 A1 X5.39.217.77:88980 O5 P7 `4 x9 @, U& M$ S$ V( u) F
Did that bridge have to be designed to withstand the additional weight of ship and barge traffic,; a, r7 q3 A$ j5 e" M
Or just the weight of the water? 0 X6 ?6 r7 e9 \: e1 l, D( _TVBNOW 含有熱門話題，最新最快電視，軟體，遊戲，電影，動漫及日常生活及興趣交流等資訊。 6 e7 f: q8 _4 c/ i, sAnswer:tvb now,tvbnow,bttvb3 j" D1 x2 F9 D
' C# n9 W, N6 PTVBNOW 含有熱門話題，最新最快電視，軟體，遊戲，電影，動漫及日常生活及興趣交流等資訊。It only needs to be designed to withstand the weight of the water! / c) L/ ^6 E% N, [; CTVBNOW 含有熱門話題，最新最快電視，軟體，遊戲，電影，動漫及日常生活及興趣交流等資訊。Why? A ship always displaces an amount of water that weighs the same as the ship, regardless of how heavily a ship may be loadedtvb now,tvbnow,bttvb7 q. c3 a! q9 H$ x- Q4 V3 G. R" ^& M : H' _& w5 p* {2 {公仔箱論壇 6 n( l$ a/ x' p4 T, S- fThe Incredible Magdeburg Water Bridge in Germany. q7 Y7 m y$ m
The Magdeburg Water Bridge is a navigable aqueduct in Germany that connects the Elbe-Havel Canal to the Mittelland Canal and allows ships to cross over the Elbe River. At 918 meters, it is the longest navigable aqueduct in the world. 1 Y) a( F( |# w" n* x; x5.39.217.77:8898The Elbe-Havel and Mittelland canals had previously met near Magdeburg but on opposite sides of the Elbe Ships moving between the two had to make a 12-kilometer detour, descending from the Mittelland Canal through the Rothensee boat lift into the Elbe, then sailing downstream on the river, before entering the Elbe-Havel Canal through Niegripp lock. Low water levels in the Elbe often prevented fully laden canal barges from making this crossing, requiring time-consuming off-loading of cargo. tvb now,tvbnow,bttvb4 C: y- y( B. ^( D: \( `
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Construction of the water link was started as early as in the 1930s but due to the World War 2 and subsequent division of Germany the work remained suspended till 1997. The aqueduct was finally completed and opened to the public in 2003. % f, ?' f4 ~1 V0 }tvb now,tvbnow,bttvb 6 [0 ^( T( p7 o. W5 L$ w) ~1 ktvb now,tvbnow,bttvb4 m. ?; S! r: M, v1 R) u [attach]1486500[/attach]公仔箱論壇) T' n3 |8 ~* V" N [attach]1486501[/attach]公仔箱論壇& ^( I' S) C) H8 v [attach]1486502[/attach] * _' f, h0 L7 @公仔箱論壇[attach]1486503[/attach] . m: F2 P# ~+ o8 g( X9 l# ptvb now,tvbnow,bttvb[attach]1486504[/attach]3 y2 A# ]5 H7 U0 g$ N& a [attach]1486505[/attach] ) r8 Y( l' _, lTVBNOW 含有熱門話題，最新最快電視，軟體，遊戲，電影，動漫及日常生活及興趣交流等資訊。* m" G* _3 \9 @0 M# p 作者: busyfun 時間: 2011-10-4 11:33 AM
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