本帖最後由 lilitan008 於 2011-10-3 12:57 PM 編輯
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/ M& H2 {: `: U+ vIf you are not a Physics person, read on and learn a fact of physics.
1 L; {8 |- t# F6 h4 n) ?公仔箱論壇AMAZING!
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Even after you see it, it is still hard to believe!tvb now,tvbnow,bttvb8 G$ ~/ e D! ?4 V0 J6 D
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。( H4 v! D+ X( l3 t; N$ ?0 ?9 ^
2 o3 r2 ~# Z8 RTVBNOW 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。Magdeburg Water Bridge in Germany What a feat! Six years, 500 million euros, 918 meters long. Now this is engineering! - R" i8 }0 d. _7 i+ T( r+ L6 ]
This is a channel-bridge over the River Elbe and joins the former East and West Germany as part of the unification project.
& m$ d0 `8 C6 k' Rtvb now,tvbnow,bttvbIt is located in the city of Magdeburg, near Berlin.5.39.217.77:88987 b, W/ Y% | N! M1 R' _# D. {
+ C2 @( G2 v7 Q( g* G4 {& gtvb now,tvbnow,bttvbThe photo was taken on the day of inauguration.
& ?, s' R" C4 v+ q0 F' w: s% Z8 |; z公仔箱論壇To those who appreciate engineering projects, here's a puzzle for you armchair engineers and physicists.0 Y+ V+ t1 v4 L& P6 w) ]# \
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。1 g5 Q5 P. p7 O. Q/ w6 [* e2 U
Question:5.39.217.77:88989 A g- Q# T6 u
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Did that bridge have to be designed to withstand the additional weight of ship and barge traffic,! m1 ?6 b- e! u" B
Or just the weight of the water?
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Answer:/ O; M4 q6 \8 F$ w
6 W. F* b/ U) }3 u* tIt only needs to be designed to withstand the weight of the water!
% [7 D. h3 o% L# }. \) L; rtvb now,tvbnow,bttvbWhy? A ship always displaces an amount of water that weighs the same as the ship, regardless of how heavily a ship may be loaded3 N/ m! s7 [3 P" z
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& M. c' A: r" l' Y: f4 {8 {6 m公仔箱論壇The Incredible Magdeburg Water Bridge in Germany
+ e6 d6 p" J: M. wtvb now,tvbnow,bttvbThe 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.公仔箱論壇9 J# r& N( Z: K4 p0 d, Y# m: U
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. 公仔箱論壇 B0 q& M7 W9 N$ Q9 H& _. y8 C
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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.
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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。. ?/ ^$ e0 P" a+ T' q' q, b
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/ ~7 t+ H7 f
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tvb now,tvbnow,bttvb0 m& z6 b z. X( _- K
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7 Z' e) } x0 c8 P+ l) Z4 D公仔箱論壇5.39.217.77:8898$ L' C+ j0 ?/ e4 l& X* F' S
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