本帖最後由 lilitan008 於 2011-10-3 12:57 PM 編輯
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! o! l5 D5 N2 S! ntvb now,tvbnow,bttvbIf you are not a Physics person, read on and learn a fact of physics. + H3 f4 Q/ J* Y1 I- |2 J" A" X
AMAZING! 6 F/ @2 ?" O/ 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。/ x/ X2 o4 a( j G3 P$ `& d
Even after you see it, it is still hard to believe!
$ v' j: \: W9 }! O OTVBNOW 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。! G) H0 l/ y& n
3 F& F z; `! [0 xtvb now,tvbnow,bttvbMagdeburg 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。. S5 E9 G% j' [5 j Q
This is a channel-bridge over the River Elbe and joins the former East and West Germany as part of the unification project.
A% r% P8 N) p4 IIt is located in the city of Magdeburg, near Berlin.% m* V4 l8 _0 J0 n" Y% @/ ^' J
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The photo was taken on the day of inauguration.
" H( X7 ^; V' n9 t* W% K1 gtvb now,tvbnow,bttvbTo those who appreciate engineering projects, here's a puzzle for you armchair engineers and physicists.) @1 ^4 F @" e' X) K
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Question:. ~# {$ T: a- q6 r3 V) c2 r1 B; d
& F) p7 O0 I FTVBNOW 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,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。) e1 U# T9 S; ]+ K
Or just the weight of the water? 公仔箱論壇7 V! u8 G- D# z' d0 H
2 a! ?9 ]% [4 Q0 I; ftvb now,tvbnow,bttvbAnswer:
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6 B; M8 g+ d* [- }; H5.39.217.76It only needs to be designed to withstand the weight of the water!
$ \* f2 v- L+ f3 i5.39.217.76Why? A ship always displaces an amount of water that weighs the same as the ship, regardless of how heavily a ship may be loaded& K6 @3 c# \: U8 p
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The Incredible Magdeburg Water Bridge in Germany
. l# V1 A; r o+ _5 C9 V4 m4 w3 M. etvb 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.
4 H+ |% Z" Y! X. ]) x& VTVBNOW 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。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.
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: }; H: l* Y2 z公仔箱論壇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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& |" Q2 E+ Q0 F' }8 G- d) p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。$ | {) L: B- M, F 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。. X1 a' J# w! ^
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