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 J( Y: N9 Q7 U# u& P. q
AMAZING! : r9 C4 ^* u4 N3 r8 b
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Even after you see it, it is still hard to believe!; u( }( O& @3 _# [5 e& w
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Magdeburg Water Bridge in Germany What a feat! Six years, 500 million euros, 918 meters long. Now this is engineering!
' X; V5 N$ z2 L. \# k% dThis is a channel-bridge over the River Elbe and joins the former East and West Germany as part of the unification project. 6 K. u3 K; [9 H& e; S4 X
It is located in the city of Magdeburg, near Berlin.
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4 z2 _' |/ X/ q N8 y- tTVBNOW 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。The photo was taken on the day of inauguration.www2.tvboxnow.com2 t b9 }/ E* _6 ?
To those who appreciate engineering projects, here's a puzzle for you armchair engineers and physicists.
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( ?* X$ a* C! B" k" J+ \. n公仔箱論壇Question:
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Did that bridge have to be designed to withstand the additional weight of ship and barge traffic,tvb now,tvbnow,bttvb4 b" u6 E+ c& n& f9 B4 w. |$ X
Or just the weight of the water? www2.tvboxnow.com: D; N# X6 V, ?3 b( D% a. n
" _. w2 D' c0 y! M) Xwww2.tvboxnow.comAnswer:
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5 v8 Y* t8 h+ y0 H0 {7 i' V0 `" 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。It only needs to be designed to withstand the weight of the water!
9 C# N: y) _2 K( `/ f4 JWhy? 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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; r* `2 k6 z# s: S% hThe Incredible Magdeburg Water Bridge in Germany* S T1 s; w( D9 R& G0 m( U
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.tvb now,tvbnow,bttvb# \. h/ b4 i3 \1 i2 _2 p% K5 v
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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4 o. _% x2 W3 C5 W- O6 j6 p: `9 O公仔箱論壇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. www2.tvboxnow.com# r, u. z7 V) v4 G3 `6 q- Q
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