本帖最後由 lilitan008 於 2011-10-3 12:57 PM 編輯 , O! {1 j$ ?. Q5 J# @. ~
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If you are not a Physics person, read on and learn a fact of physics.
2 s( [1 f" V6 l/ LAMAZING! 公仔箱論壇! \7 ]! z" @$ X) H
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Even after you see it, it is still hard to believe!: q; T P+ A) }
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. _, m$ Z5 L- \Magdeburg Water Bridge in Germany What a feat! Six years, 500 million euros, 918 meters long. Now this is engineering! ' m% |8 {4 n! t8 O! _" E, ^4 k
This is a channel-bridge over the River Elbe and joins the former East and West Germany as part of the unification project.
3 }2 ~5 R( S! f. x5.39.217.76It is located in the city of Magdeburg, near Berlin.: Q( V" w2 [* |
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The photo was taken on the day of inauguration.tvb now,tvbnow,bttvb3 ~; J2 c" E, ^+ B4 s$ q- W2 v, j
To those who appreciate engineering projects, here's a puzzle for you armchair engineers and physicists.
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Question:
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& h; ~: ~/ U/ o( [* U% ~: @, d6 |5.39.217.76Did that bridge have to be designed to withstand the additional weight of ship and barge traffic,
! e( I% Z7 i0 K7 w7 D公仔箱論壇Or just the weight of the water? 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。$ C; ^" P% b/ B6 u" Q3 T5 I& g+ \
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Answer:
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9 ~% K: m* `; u7 fIt only needs to be designed to withstand the weight of the water!
( }4 N9 F2 i9 _2 kWhy? A ship always displaces an amount of water that weighs the same as the ship, regardless of how heavily a ship may be loaded6 e6 I: ]5 \# h5 K3 D
" n3 H' l( r. j0 l7 S8 \) |! `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。5.39.217.768 O# T$ i* f' J. B/ G; V) V9 ~
The 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。6 M! u4 W, i. s2 J% w3 [; i
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.
5 H+ {2 b5 G) K3 E; W* OThe 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. tvb now,tvbnow,bttvb$ R- r: y& d/ B9 ~
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。1 M m, {8 z1 m; B& c
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.
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* e9 `7 h# S# t# z: J7 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。. {# y9 \* e: |9 B/ `! G. l
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