本帖最後由 lilitan008 於 2011-10-3 12:57 PM 編輯 公仔箱論壇$ H+ a2 P [2 [0 a8 G: N6 [+ U
3 h* a, q( f- u9 ?* vTVBNOW 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。If you are not a Physics person, read on and learn a fact of physics.
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3 ~! J0 n) j& G! ?6 _* V) @9 j5 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。5.39.217.765 t4 O7 _% u4 A7 V! w: A5 v; t
Even after you see it, it is still hard to believe!
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( C2 H0 x7 K. N$ r) x5.39.217.76Magdeburg Water Bridge in Germany What a feat! Six years, 500 million euros, 918 meters long. Now this is engineering! tvb now,tvbnow,bttvb" M8 m: _% u( T, f D B& l' U
This is a channel-bridge over the River Elbe and joins the former East and West Germany as part of the unification project. 公仔箱論壇3 P. ~$ }$ V5 V7 Y/ `, K
It is located in the city of Magdeburg, near Berlin.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。: r/ s, n' P! ^9 j) u/ F
( O1 y2 H" M1 Y4 b0 {The photo was taken on the day of inauguration.
* ~6 W& L! |. N* c1 U" mTo those who appreciate engineering projects, here's a puzzle for you armchair engineers and physicists.
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Question:4 {8 @2 u+ d: t
+ [7 t4 V4 G7 A5 R( `; N1 ctvb now,tvbnow,bttvbDid that bridge have to be designed to withstand the additional weight of ship and barge traffic,
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Answer:公仔箱論壇) X- t+ A' C6 _$ Z. ^- m) D
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It only needs to be designed to withstand the weight of the water! tvb now,tvbnow,bttvb; _3 V; T: Z5 E! |9 V: T' _
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公仔箱論壇1 L- X1 G+ E; i! m* d! |& f
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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。 a1 r; [1 b6 ~6 j, l. D! \# }
The Incredible Magdeburg Water Bridge in Germany
: m! n4 N9 s' U9 I! V( q3 TThe 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.tvb now,tvbnow,bttvb. V4 |9 N- ?5 Z1 B
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. 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。) \* W! b" c# B/ [7 G9 T
4 R8 ^) E/ P5 l3 T9 yConstruction 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.
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3 Z0 w8 F- o. ?$ R) 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。
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