本帖最後由 lilitan008 於 2011-10-3 12:57 PM 編輯
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If you are not a Physics person, read on and learn a fact of physics. 5.39.217.766 }2 }% A5 \* f, M C1 ?
AMAZING! tvb now,tvbnow,bttvb8 Y- S" h' s- `% Z$ Y, N8 e2 [' K
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Even after you see it, it is still hard to believe!0 a1 m5 t# ?6 c3 Z+ x* `
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Magdeburg Water Bridge in Germany What a feat! Six years, 500 million euros, 918 meters long. Now this is engineering! tvb now,tvbnow,bttvb7 x- n; c, {5 ]
This is a channel-bridge over the River Elbe and joins the former East and West Germany as part of the unification project.
6 Y q9 N( L& U( z+ U" ^" h3 gIt is located in the city of Magdeburg, near Berlin.
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3 A. y* _+ J- wThe photo was taken on the day of inauguration.tvb now,tvbnow,bttvb1 A0 {- ?, }) `: i8 a# G; d
To those who appreciate engineering projects, here's a puzzle for you armchair engineers and physicists.0 M" m4 N: W+ t2 z% {
( c6 a! i! ]2 ?5.39.217.76Question:
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Did that bridge have to be designed to withstand the additional weight of ship and barge traffic,
0 {4 U% X$ z( Otvb now,tvbnow,bttvbOr just the weight of the water? 公仔箱論壇6 ^! B4 B: Q7 F" P8 h( l: H
1 {4 s/ \7 E% V' n8 O# [( R& @5.39.217.76Answer:tvb now,tvbnow,bttvb$ E, B2 k8 `, Z' d
0 b1 @' ~3 r9 H: V8 hTVBNOW 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。It only needs to be designed to withstand 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。9 H, k9 `/ M6 r" e+ e; D
Why? A ship always displaces an amount of water that weighs the same as the ship, regardless of how heavily a ship may be loaded5.39.217.76: b( s# p$ e# b1 |
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The Incredible Magdeburg Water Bridge in Germany
, `# N0 b* D# o- a# |tvb now,tvbnow,bttvbThe 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.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。( l% I0 c# ^+ G6 l
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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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. 1 V0 C8 _5 {& E% W0 z6 c9 S8 i
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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。' E! b9 W7 O/ U" G3 s
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。* E. B* F4 o1 s) H# q/ f3 _
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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。, P1 w- k% H \5 A2 a- `+ s) _
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