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. 公仔箱論壇/ G, g0 S' b+ f8 d# o5 `0 i
AMAZING! 5.39.217.77:88983 l" c( G. s# t, ]7 b& D$ B: P- J8 G
- w1 o( O; m7 T4 t8 Q. Z" xEven after you see it, it is still hard to believe!
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7 ]9 {6 @; ]4 v. L5.39.217.77:8898Magdeburg Water Bridge in Germany What a feat! Six years, 500 million euros, 918 meters long. Now this is engineering!
. f+ C' ~) u9 `1 t0 W7 f* vThis is a channel-bridge over the River Elbe and joins the former East and West Germany as part of the unification project.
6 e! i' w2 @& nIt is located in the city of Magdeburg, near Berlin.
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- L+ ?% D2 Z7 X4 A- n, PThe photo was taken on the day of inauguration.tvb now,tvbnow,bttvb u" m% Z `3 O; s% A; ?. }
To those who appreciate engineering projects, here's a puzzle for you armchair engineers and physicists.4 i8 T: L9 o8 i- X. U
8 }- ]5 `( R) _! d* F4 \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。Question:
! P- O) n1 e2 P4 K9 Y3 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。公仔箱論壇/ r, Z$ p" I6 v% `, g% U- U1 ^4 ~5 l8 m
Did that bridge have to be designed to withstand the additional weight of ship and barge traffic,5.39.217.77:8898) l. Y1 [2 _" r% R
Or just the weight of the water?
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/ m# ~3 I; l+ K6 ~: y' n) O公仔箱論壇Answer:5.39.217.77:88988 `" [; I j5 C$ i$ x) G
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It only needs to be designed to withstand the weight of the water! 5.39.217.77:88981 I3 a$ S' m2 c" Q+ o
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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The Incredible Magdeburg Water Bridge in Germany
9 G0 T0 W; |2 y% Ttvb 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.
' t5 G' u5 k" y8 g& o. G* o. m. ?5.39.217.77:8898The 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,bttvb5 M" U5 z% T! b. j
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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. " \7 I" K2 R" W2 S% c
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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。3 I8 i3 B4 {" V8 p
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