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 ( |' h* P$ U% D4 L/ K
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If you are not a Physics person, read on and learn a fact of physics. ; b0 s) m/ A; C" G, k Z! ?5 g9 T
AMAZING! 公仔箱論壇% f9 R3 {9 X0 {* L5 |' s7 r& ]' ~ 8 Q/ W# ~) O1 c9 f5 S5.39.217.76Even after you see it, it is still hard to believe! 2 J3 [9 E% @# g$ H1 k# c* l; M' A5.39.217.76[attach]1486499[/attach] $ `1 z; m& O! B& t4 w9 g9 k W公仔箱論壇5.39.217.76, u! m5 ]6 l! }% Y
Magdeburg Water Bridge in Germany What a feat! Six years, 500 million euros, 918 meters long. Now this is engineering! : @; K- F! T& o" Q' E9 l) H8 \This is a channel-bridge over the River Elbe and joins the former East and West Germany as part of the unification project. 1 [2 @( Z5 S1 w' U' M# g7 ~7 I
It is located in the city of Magdeburg, near Berlin. 5 M, g; Y, g3 ?tvb now,tvbnow,bttvbTVBNOW 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。: U4 k" B! v& Q, ~) _: B& w- u) F
The photo was taken on the day of inauguration. # g7 f/ ]# p9 z/ j; I公仔箱論壇To those who appreciate engineering projects, here's a puzzle for you armchair engineers and physicists.tvb now,tvbnow,bttvb0 v/ q# T- ~ _& N! v& m: _7 C# l
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。4 E% H& W1 ^' l+ U$ _# T
Question: ( ?# z* i- n* T7 p: K) i2 K # d( B% \0 e' b+ b. X8 T4 p$ fDid that bridge have to be designed to withstand the additional weight of ship and barge traffic,8 E: q) D3 D1 x( g0 p) [" j1 E0 d
Or just the weight of the water? 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。5 H% z$ w+ |( b$ v5 O9 Q# o. K
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Answer: 8 b' A& [* P) ~ / Y7 a6 P* r5 |6 S; f! ?/ a. T. @# W公仔箱論壇It only needs to be designed to withstand the weight of the water! ) l/ `! F \- l; ]公仔箱論壇Why? A ship always displaces an amount of water that weighs the same as the ship, regardless of how heavily a ship may be loaded : ?$ l6 q6 O. t. T m, q3 c, A! g' G5 w, U' O) l! S* n$ f
4 `) {9 V) r& a( } The Incredible Magdeburg Water Bridge in Germany ! t7 I) q% \, Xtvb now,tvbnow,bttvbThe 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. ; _6 V4 v# j& f- J5 z- Z% Stvb now,tvbnow,bttvbThe 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. 公仔箱論壇0 q# q* c( W% u
2 u s3 |* m, w+ Rtvb now,tvbnow,bttvbConstruction 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. 5 Q- F" i; l( m& f; Y9 U1 ]0 [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 i" n6 s4 C8 j$ R* c" K( r
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