本帖最後由 lilitan008 於 2011-10-3 12:57 PM 編輯 5.39.217.77:88986 Q# a, A- E7 v
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If you are not a Physics person, read on and learn a fact of physics.
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Even after you see it, it is still hard to believe!0 C) I( }: @) r) \1 O: j4 H- B
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Magdeburg Water Bridge in Germany What a feat! Six years, 500 million euros, 918 meters long. Now this is engineering!
2 P7 {/ a7 L9 V7 `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。This is a channel-bridge over the River Elbe and joins the former East and West Germany as part of the unification project. ; Y/ \- {) f- t, l
It is located in the city of Magdeburg, near Berlin.
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The photo was taken on the day of inauguration.
: H8 |; y- a2 |; q$ ftvb now,tvbnow,bttvbTo those who appreciate engineering projects, here's a puzzle for you armchair engineers and physicists.
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Question:- Z' E; ]4 } c
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Did that bridge have to be designed to withstand the additional weight of ship and barge traffic,' i; I/ L6 P9 R
Or just the weight of the water?
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) G" X! a8 ^0 r# l7 K( SIt only needs to be designed to withstand the weight of the water!
4 r$ b' L5 p7 b9 E! ]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。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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The Incredible Magdeburg Water Bridge in Germany
! p4 ^# C9 l) |7 R( G0 K A9 |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.公仔箱論壇7 A- e* U6 w* {. p/ U8 t% W
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.
$ v& m7 ]1 j7 W7 P( zTVBNOW 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。
: w8 U4 k: H( a" R6 i5.39.217.77:8898Construction 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. 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。& J% G5 f$ {1 h3 {0 v9 i" f
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8 I# ?/ w: g, S) d; w2 Z# o# ]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。' I* j$ M. ]/ Z/ ?7 d- U8 D
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