本帖最後由 lilitan008 於 2011-10-3 12:57 PM 編輯 tvb now,tvbnow,bttvb7 _4 W8 Q2 M" m0 a' ` D
公仔箱論壇* q) x& B8 ?" C$ |& i" F0 H+ R- s
If you are not a Physics person, read on and learn a fact of physics.
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Even after you see it, it is still hard to believe!' D3 q9 K9 X" O; Z: j) D, W
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5 p& N2 v5 M) R2 d3 R5.39.217.76Magdeburg Water Bridge in Germany What a feat! Six years, 500 million euros, 918 meters long. Now this is engineering!
1 O3 @1 U/ t, f# g6 [% xThis is a channel-bridge over the River Elbe and joins the former East and West Germany as part of the unification project. tvb now,tvbnow,bttvb# \; [6 W: I! y' C
It is located in the city of Magdeburg, near Berlin.
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" o" U7 g4 N" D( m; XThe photo was taken on the day of inauguration.8 j) M" ]# a0 a) Q% S" L) q8 x
To those who appreciate engineering projects, here's a puzzle for you armchair engineers and physicists.
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Question:5.39.217.767 p1 P1 F) _1 z+ i8 j* g
: V+ S+ T$ W4 k) R3 f/ P, X& t公仔箱論壇Did that bridge have to be designed to withstand the additional weight of ship and barge traffic,tvb now,tvbnow,bttvb( T/ T. I' S1 D0 ]2 R5 E
Or just the weight of the water?
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Answer:
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; d8 e" Q1 q- o8 ?2 Gtvb now,tvbnow,bttvbIt only needs to be designed to withstand the weight of the water!
8 r+ @) C6 V7 F0 L& e8 R5.39.217.76Why? A ship always displaces an amount of water that weighs the same as the ship, regardless of how heavily a ship may be loaded5.39.217.761 ]4 b) w1 F; C! V* c
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" U! b, F- B- h* QThe Incredible Magdeburg Water Bridge in Germany5.39.217.76* V9 B6 R, T! ^: \: ?9 z4 [
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.
( }. l U6 i2 i0 l9 V( k' `, xTVBNOW 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 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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9 n' k0 }' @- O% M+ kTVBNOW 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。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. ( H4 W* ]" s' e( `
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8 ^( J: {) v" V; Z公仔箱論壇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 f/ m4 B9 y1 O6 r% {' J) y2 f" u
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