本帖最後由 lilitan008 於 2011-10-3 12:57 PM 編輯 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。- S9 X+ P. |6 l" Z2 M; I' k1 Y
0 J$ D! h5 T6 W$ d6 t. F4 s公仔箱論壇If you are not a Physics person, read on and learn a fact of physics.
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, F9 d! f& p+ v! ?6 \ uEven after you see it, it is still hard to believe!
$ L+ _+ Z7 S1 _' t, b" ?: ]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。
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Magdeburg Water Bridge in Germany What a feat! Six years, 500 million euros, 918 meters long. Now this is engineering!
" @& h4 n7 y& i: O/ y- 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。This is a channel-bridge over the River Elbe and joins the former East and West Germany as part of the unification project.
* s+ B, ]( G" N8 q3 T8 Q5.39.217.77It is located in the city of Magdeburg, near Berlin.
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The photo was taken on the day of inauguration.
Z0 n3 R" |* w8 q' M% U公仔箱論壇To those who appreciate engineering projects, here's a puzzle for you armchair engineers and physicists.9 P- P+ R7 e! ?
: _' o8 b: E" o6 eQuestion:公仔箱論壇4 q) P* z# s; C( j
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Did that bridge have to be designed to withstand the additional weight of ship and barge traffic,
6 y5 n' n* O5 P8 |. 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。Or just the weight of the water?
4 ]" I5 o0 C1 R- n9 kTVBNOW 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。! s% K/ {: \: S+ O( o5 {
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- X% L. B7 L7 e5.39.217.77It only needs to be designed to withstand the weight of the water! 9 s, V4 D( Y- W
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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' h+ [/ ?$ [6 X) q! x( z) I, ^8 z# sThe Incredible Magdeburg Water Bridge in Germany
0 ^2 w8 V' @3 Z3 s# y5 x9 F% {2 i: iThe 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.
' i, I' _1 Z9 a L: a公仔箱論壇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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( S9 S. P7 s; k4 K6 B* I+ ]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. 公仔箱論壇3 }4 l. P# z7 R* ?+ Y
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& ~. A( z/ G9 q1 C- 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。
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