本帖最後由 lilitan008 於 2011-10-3 12:57 PM 編輯
1 M" e2 ?- w! D1 t2 h7 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。
1 U! P# ^7 d) Y- b4 X, s( U: B5.39.217.77:8898If you are not a Physics person, read on and learn a fact of physics.
5 h3 ?/ F [$ }- r4 DAMAZING!
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' c t$ g9 x- U/ |tvb now,tvbnow,bttvbEven after you see it, it is still hard to believe!
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2 J9 H% {4 q. ?$ V. J% q公仔箱論壇Magdeburg Water Bridge in Germany What a feat! Six years, 500 million euros, 918 meters long. Now this is engineering!
; \8 z0 a# B% |This is a channel-bridge over the River Elbe and joins the former East and West Germany as part of the unification project. 2 |: |; Y% M( r# R1 |7 w% C
It is located in the city of Magdeburg, near Berlin.
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2 y: @- @! F2 E5 h0 n! mThe photo was taken on the day of inauguration.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' R3 y; p& a F: [, S0 J
To those who appreciate engineering projects, here's a puzzle for you armchair engineers and physicists.
- _8 t" i$ F7 ?. @, J/ S3 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。
% g, v4 k! o/ B& U5.39.217.77:8898Question:
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Did that bridge have to be designed to withstand the additional weight of ship and barge traffic,
7 `0 e- r/ ^! q- T9 QOr just the weight of the water?
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$ ^/ b, V+ Y; [0 S4 @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。Answer:
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7 f. D* M9 x! z, J* w( E( B& |公仔箱論壇It only needs to be designed to withstand the weight of the water! ; {# R$ j9 q# ? \ |1 ]: r
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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1 U4 V2 K4 W, U% G" T$ ntvb now,tvbnow,bttvbThe Incredible Magdeburg Water Bridge in GermanyTVBNOW 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。 C+ x; Q$ T5 a
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.8 O3 e$ |3 z# k$ K U
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. - W. \/ Z' L2 b' W* a- ~
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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.
! L: X* ]6 p+ \! i, ~9 sTVBNOW 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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4 B5 P) Q! d4 W; v/ K" { T; _, 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。
6 v" z& u0 p3 o" _1 Q# ytvb 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。2 p- i6 w/ z7 _" r
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