本帖最後由 lilitan008 於 2011-10-3 12:57 PM 編輯
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1 ^, L' ]! L# Y2 p3 n4 J! R: yIf you are not a Physics person, read on and learn a fact of physics. 公仔箱論壇2 n: b) ?9 W9 j" @, }
AMAZING! tvb now,tvbnow,bttvb2 s. M6 W2 g! G$ s8 v: Z: P
) `+ P- ?5 K0 K* F1 e2 M' [0 @) J5.39.217.76Even after you see it, it is still hard to believe!
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0 D6 y) A2 t8 v' R' x/ Y( r% ztvb now,tvbnow,bttvbMagdeburg Water Bridge in Germany What a feat! Six years, 500 million euros, 918 meters long. Now this is engineering! tvb now,tvbnow,bttvb8 L5 ~2 h. y: C! [- F' d
This is a channel-bridge over the River Elbe and joins the former East and West Germany as part of the unification project.
. G% ]' A& [+ {7 w7 \公仔箱論壇It is located in the city of Magdeburg, near Berlin.3 V, I1 `9 |6 M
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The photo was taken on the day of inauguration.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。+ [& R; K+ W: \# D; n
To those who appreciate engineering projects, here's a puzzle for you armchair engineers and physicists.1 M5 i8 s4 b% z( K
7 h% E8 y/ u$ CTVBNOW 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。Question:tvb now,tvbnow,bttvb `; J* u( S: \( \5 k7 {* r1 _+ D
& l" `) z) S$ F, w- Q/ B8 PTVBNOW 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。Did that bridge have to be designed to withstand the additional weight of ship and barge traffic,
6 V+ _$ s8 }( H% ?+ O) ]公仔箱論壇Or just the weight of the water? ' I4 w1 E: o& m: J' s! m
4 G! D. b# l* W8 v% A0 Z" w! g/ @, l2 Ctvb now,tvbnow,bttvbAnswer:
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, W y2 y2 _ W& Q* T m* ^1 C3 \tvb now,tvbnow,bttvbIt only needs to be designed to withstand the weight of the water!
2 O" [& C2 {) W2 e" L; b- _$ Otvb 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 loaded
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9 p0 e2 Q* K. e8 d% E- sTVBNOW 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。
$ U, z9 G& W. E' OThe Incredible Magdeburg Water Bridge in Germany/ v$ g7 Z% }- c2 N* }# [, u8 i( a
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.
* V; v/ @; m: G; p3 A' r5.39.217.76The 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. ( R- r4 ^: m$ u6 v F( W
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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.
2 G1 a+ S7 |' P2 o- j) O: 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。
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