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.
2 [9 c4 y+ a3 c, t' f( Q: S/ O& j5.39.217.76AMAZING! / h+ G5 p: C$ _0 E
; _( ^: _ I2 o2 Y$ m" C# _tvb now,tvbnow,bttvbEven after you see it, it is still hard to believe!
0 N: ^5 ^; k$ P' N* 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。
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Magdeburg Water Bridge in Germany What a feat! Six years, 500 million euros, 918 meters long. Now this is engineering!
5 g" b% L0 R1 K ]1 H5.39.217.76This 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* g, R. ?% ?+ O1 q# q
It is located in the city of Magdeburg, near Berlin.tvb now,tvbnow,bttvb6 |- T+ |. ~! |- x- ^
2 H% y4 J7 o% j1 @8 AThe photo was taken on the day of inauguration.
+ J) w+ k/ X+ W# o1 [# Z9 k# C( P公仔箱論壇To those who appreciate engineering projects, here's a puzzle for you armchair engineers and physicists.
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0 ^9 m; k! l7 NQuestion:
- ]: L8 l* \, j) 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。公仔箱論壇2 z6 `$ _: }; Y3 b Z8 b: i
Did that bridge have to be designed to withstand the additional weight of ship and barge traffic,
! P0 L# F6 ]: j/ D+ @' [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。Or just the weight of the water? 5.39.217.769 X1 }' a$ D0 w4 R: O4 n/ J
tvb now,tvbnow,bttvb4 T- ^2 m: p# A" r3 P% i& z, w
Answer:5.39.217.760 l) x/ G+ J, B+ l6 {2 z/ J
: H. |& M- l3 _2 D3 J9 V% u7 ?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。It only needs to be designed to withstand the weight of the water!
& ]9 p+ k2 z. IWhy? A ship always displaces an amount of water that weighs the same as the ship, regardless of how heavily a ship may be loaded
$ B8 }9 U: P* W$ n! x4 i公仔箱論壇
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; \, I$ S' x% B, }7 \The Incredible Magdeburg Water Bridge in Germanytvb now,tvbnow,bttvb8 {% r( |1 M5 n8 [
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.
$ v9 x% H8 e+ X( V. p2 L. htvb now,tvbnow,bttvbThe 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. 5.39.217.76& T9 C+ ]4 x+ G( O/ B5 w/ E
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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.
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5 f) m7 Y8 ]1 U& d" b% T+ s( rtvb now,tvbnow,bttvb5.39.217.76& o. a8 E: }- |' ^) `. z
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。) b' g6 R. E3 G) k9 v" }
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& g+ D& m% T4 l: O4 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。. O- Q: y8 v6 W. W- i6 A
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