本帖最後由 lilitan008 於 2011-10-3 12:57 PM 編輯 公仔箱論壇# A* v, z3 l2 @) A3 X! l
& Y, w/ z/ E( v. x3 E: S1 m/ E( Mtvb now,tvbnow,bttvbIf you are not a Physics person, read on and learn a fact of physics.
' \. f' B1 I7 i* v0 ?9 F8 s8 t5.39.217.76AMAZING! 公仔箱論壇8 a, b" D4 F/ K( F* i! i/ f
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Even after you see it, it is still hard to believe!
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. [5 A8 S: @$ y5 }tvb now,tvbnow,bttvbMagdeburg Water Bridge in Germany What a feat! Six years, 500 million euros, 918 meters long. Now this is engineering! 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。/ u- I4 b* y4 ?+ @/ T y
This is a channel-bridge over the River Elbe and joins the former East and West Germany as part of the unification project. tvb now,tvbnow,bttvb7 [6 C" U }% ]* Z8 t: g3 {
It is located in the city of Magdeburg, near Berlin.+ R2 ]+ i& G8 T( P2 D" G6 @* C
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The photo was taken on the day of inauguration.
0 b. |) v" t; Y3 N" `0 JTo those who appreciate engineering projects, here's a puzzle for you armchair engineers and physicists.5.39.217.76" n) l' A {+ P* n* B# \' E
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Question:
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Did that bridge have to be designed to withstand the additional weight of ship and barge traffic,公仔箱論壇+ g5 w; F% }2 {+ g1 m. T+ L
Or just the weight of the water? , m0 b1 j+ g, s
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Answer:
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It only needs to be designed to withstand the weight of the water!
; ]9 }- |$ f' L. R% O* a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
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; ^6 I+ A1 }8 ktvb now,tvbnow,bttvbThe Incredible Magdeburg Water Bridge in Germany
+ t5 T w7 G5 h1 `' D% z, VThe 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.5.39.217.762 H5 X0 t- L; V. H$ G h7 j
The 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.
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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. 5.39.217.763 ?* ~+ M: ^' ^3 Y1 `! }
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) q x$ S) {' oTVBNOW 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。
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' k. [) N3 @; ^9 v* WTVBNOW 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。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。! O, {, R' p) T, C
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