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。8 A! j$ I& }' f2 N6 F
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If you are not a Physics person, read on and learn a fact of physics. 5.39.217.76# M8 d* l2 p6 q6 t6 S
AMAZING! ; |% i! a% f3 d8 R
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Even after you see it, it is still hard to believe!
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- k: o% m k6 y% atvb now,tvbnow,bttvbMagdeburg Water Bridge in Germany What a feat! Six years, 500 million euros, 918 meters long. Now this is engineering! ( r2 s. I; s7 s6 {0 u
This is a channel-bridge over the River Elbe and joins the former East and West Germany as part of the unification project.
) Q4 e; h& i- g7 w7 W公仔箱論壇It is located in the city of Magdeburg, near Berlin.5.39.217.76! d) C! z) D0 r: J+ I
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The photo was taken on the day of inauguration.
1 J" q& E8 m; d" L) dtvb now,tvbnow,bttvbTo those who appreciate engineering projects, here's a puzzle for you armchair engineers and physicists.3 C# D6 B% u2 `" Y T, S+ ^1 T
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Question:9 e1 O6 q: ~: o" u" Q
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Did that bridge have to be designed to withstand the additional weight of ship and barge traffic,tvb now,tvbnow,bttvb9 I, b7 F3 {& H2 q7 h
Or just the weight of the water?
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6 ^) m9 w3 C6 j: ^tvb now,tvbnow,bttvbAnswer:公仔箱論壇9 `1 V( s6 R! [9 K
# z$ ^6 d6 l- r m* `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。It only needs to be designed to withstand the weight of the water! , g/ o& R, w* l$ P$ H8 F
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$ I/ W$ x8 Z q. ^# c- G2 Q# E! F
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2 s5 Y' m5 o) `" }( wThe Incredible Magdeburg Water Bridge in Germanytvb now,tvbnow,bttvb/ [, c0 I3 ~7 W
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.3 O% d/ O' P8 L# g2 H- B
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. 6 v3 V6 k- Q! K7 l z" K
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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. 公仔箱論壇2 A1 y0 K* X- M% R
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' T- d+ n: A. t9 ~/ x% ^! BTVBNOW 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。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。& \' s+ K7 L7 t; N! x; a4 W
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