本帖最後由 lilitan008 於 2011-10-3 12:57 PM 編輯 公仔箱論壇7 c$ ?6 s& Z* }5 S& m( }) q8 g
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If you are not a Physics person, read on and learn a fact of physics.
$ }+ E5 G( [+ l( G5.39.217.77AMAZING!
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6 c1 ^: [' Q* _) b$ T8 [: G公仔箱論壇Even after you see it, it is still hard to believe!
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7 G T! ?7 f% X0 `- dTVBNOW 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。
- D0 w7 Z% j: c$ m/ ]% U0 |! G4 o公仔箱論壇Magdeburg Water Bridge in Germany What a feat! Six years, 500 million euros, 918 meters long. Now this is engineering!
- ^; ^& R; @: b8 n# k' a2 O6 c5.39.217.77This is a channel-bridge over the River Elbe and joins the former East and West Germany as part of the unification project. 5.39.217.77' Z; d. w' u7 I8 ?. b0 g
It is located in the city of Magdeburg, near Berlin.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。6 \( B/ }& S t% G4 n$ P( u
6 I# Z N( s4 w1 \+ W5 _: y+ T2 C5.39.217.77The photo was taken on the day of inauguration.公仔箱論壇: V, W3 T- l2 k+ g1 s! \/ i5 M" f
To those who appreciate engineering projects, here's a puzzle for you armchair engineers and physicists.5.39.217.771 o/ c9 A7 w1 e% O: w% M3 B
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Question:公仔箱論壇% J z1 b i0 G! g) e
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Did that bridge have to be designed to withstand the additional weight of ship and barge traffic,. ?0 g, D3 y4 a/ v
Or just the weight of the water? tvb now,tvbnow,bttvb/ Y$ h: w) ^" P6 H+ [- Q5 h" s
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Answer:
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2 ], W: U5 \ Q$ K+ \公仔箱論壇It only needs to be designed to withstand the weight of the water! 公仔箱論壇$ v+ j7 V/ V" w- T. L/ O2 T
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公仔箱論壇6 l- O- |1 A8 q& ?) \% G8 z& v' ^
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.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。: z: K" T$ e! t) {, T; s d
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. " j0 I# q& k/ N, X8 t
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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. ! H0 c" ]8 I' J0 y, f
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1 |! u; @/ p X5.39.217.77TVBNOW 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。4 H5 O6 w8 u& [
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6 W. N# v z6 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。
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