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。5 v6 z4 E: M5 k V3 U
! S/ Y/ _% X' u& ~If you are not a Physics person, read on and learn a fact of physics.
5 W( B# }- Y) F9 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。AMAZING!
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Even after you see it, it is still hard to believe!
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4 c {7 L2 V" R3 B# A$ R: P. f: u4 uTVBNOW 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! 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 }6 t6 P3 ^2 p2 Z- u
This 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,bttvb4 j% m6 c1 H1 I) C% b1 e
It is located in the city of Magdeburg, near Berlin.- y; ?* `# T+ H! f8 T
) ` N% d0 {$ q& ^# `公仔箱論壇The photo was taken on the day of inauguration.5.39.217.77:88988 b* P( |, N# ^! I$ O; k; v' ^
To those who appreciate engineering projects, here's a puzzle for you armchair engineers and physicists.
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Question:
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& C7 q7 b; ]* u ^, j8 A& Mtvb now,tvbnow,bttvbDid that bridge have to be designed to withstand the additional weight of ship and barge traffic,
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: p( ]9 [' F! \- B! m- b公仔箱論壇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。) D8 X: B4 o/ B$ F+ f- H
Answer:
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It only needs to be designed to withstand the weight of the water! 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' A8 Y+ h0 X8 m& [
Why? A ship always displaces an amount of water that weighs the same as the ship, regardless of how heavily a ship may be loadedTVBNOW 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。, q3 I) q" `) G J2 X6 o) f8 `( A3 b
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The Incredible Magdeburg Water Bridge in Germany; \% s( W6 u" l4 B
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.
6 o% r. R5 \" V9 d% jThe 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. * Z/ M d% K. F3 E) H! }2 o; }2 p
5 ?* b" c) `. a* Z: O" }8 ftvb now,tvbnow,bttvbConstruction 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. - F' k" [% U# Q, S; Z
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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。# J7 u3 G* R O2 C! @2 M. a5 W
tvb now,tvbnow,bttvb4 D6 q. L6 l! @% K( A( h0 I. @; ~% a
5 M8 t2 M6 B) Ktvb now,tvbnow,bttvb公仔箱論壇% r4 Z9 O8 T7 f# ?2 `4 ]' ]! _6 ^8 Y
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