本帖最後由 lilitan008 於 2011-10-3 12:57 PM 編輯 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。/ z0 H k3 X) B" W9 p
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If you are not a Physics person, read on and learn a fact of physics.
( L9 S6 G, I7 GTVBNOW 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。AMAZING!
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Even after you see it, it is still hard to believe!5.39.217.76/ Y1 ~, k' V# P$ t
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Magdeburg Water Bridge in Germany What a feat! Six years, 500 million euros, 918 meters long. Now this is engineering!
\( i, f' Y. D+ RThis 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( o/ q0 B" }& u0 T
It is located in the city of Magdeburg, near Berlin.公仔箱論壇1 M5 [+ p. {% u \
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The photo was taken on the day of inauguration.
/ |$ m2 ]! Y% }: ~7 DTo those who appreciate engineering projects, here's a puzzle for you armchair engineers and physicists.5.39.217.76# t4 v& G8 ~0 G; `3 A. Y+ G B
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Question:5.39.217.768 T3 m2 x" m3 [+ W3 [$ c
6 D. X! M' s; P3 T3 u6 s9 qDid that bridge have to be designed to withstand the additional weight of ship and barge traffic,5.39.217.768 J% J, a8 c$ V* \
Or just the weight of the water?
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3 K7 P7 D7 u: r8 b: otvb now,tvbnow,bttvbAnswer:8 k2 a- V* @( g U; b0 j3 \
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It only needs to be designed to withstand the weight of the water!
' V5 X. d$ \/ S2 @* 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。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 Germanytvb now,tvbnow,bttvb7 [* R; l i7 w' g- J7 f' ?9 ^
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,bttvb3 h! s& T! v) X2 A
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 |, }( A$ T8 h4 T7 p3 hConstruction 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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