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. 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。 f m7 t! p; _) Z4 D1 S* I
AMAZING!
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Even after you see it, it is still hard to believe!
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Magdeburg Water Bridge in Germany What a feat! Six years, 500 million euros, 918 meters long. Now this is engineering!
( l& n l T" T! ftvb now,tvbnow,bttvbThis is a channel-bridge over the River Elbe and joins the former East and West Germany as part of the unification project.
( m' s2 v4 y, J9 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。It is located in the city of Magdeburg, near Berlin.
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The photo was taken on the day of inauguration.2 J, |3 E# Y6 j; r$ z( g) J
To those who appreciate engineering projects, here's a puzzle for you armchair engineers and physicists.公仔箱論壇8 X7 X; F- U. w6 @& C2 n
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Did that bridge have to be designed to withstand the additional weight of ship and barge traffic,5.39.217.76" G2 I5 |0 W& a
Or just the weight of the water? 6 P! E- X8 W! {) i
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Answer:
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It only needs to be designed to withstand the weight of the water!
, r6 l# T3 L {7 I) o9 q9 iTVBNOW 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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) G+ l' ^4 T5 J- P; O. q: S! c. J0 `& a5.39.217.76The Incredible Magdeburg Water Bridge in Germany
' m" X% X% K( s- Q' W8 K: J* ZTVBNOW 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 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.
. u9 G! T5 g. N2 e6 _tvb 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. tvb now,tvbnow,bttvb# h/ {: p( W; m4 u1 g
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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. tvb now,tvbnow,bttvb5 M0 f! V, Z/ k7 g
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