本帖最後由 lilitan008 於 2011-10-3 12:57 PM 編輯
. [. G5 _9 F: Q$ @3 ktvb now,tvbnow,bttvbTVBNOW 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。0 U6 I1 H8 J! r& E1 G! q( k0 ^
If you are not a Physics person, read on and learn a fact of physics. ) R9 e' y# V8 _" d l
AMAZING! tvb now,tvbnow,bttvb( w4 T5 j: x; ?7 d' b! j
. n3 O& U* o$ ]& P$ REven after you see it, it is still hard to believe!
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' F. N8 O: `4 ?4 c0 \5 ftvb now,tvbnow,bttvbMagdeburg Water Bridge in Germany What a feat! Six years, 500 million euros, 918 meters long. Now this is engineering!
: n" Q! d: n" m& S1 D* C) XTVBNOW 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。This is a channel-bridge over the River Elbe and joins the former East and West Germany as part of the unification project. 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( `5 P& A0 g
It is located in the city of Magdeburg, near Berlin.
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+ p3 U7 h% }/ 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。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。+ J2 I! C$ @. c' W5 _+ X. M
To those who appreciate engineering projects, here's a puzzle for you armchair engineers and physicists.
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Question:5.39.217.768 F0 O" l, l2 i+ Q" ?
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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。/ \$ \; X# G8 P
Or just the weight of the water? 公仔箱論壇+ ~; f, F }4 a5 q! N) y
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Answer:公仔箱論壇, z; j! O1 j0 N
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It only needs to be designed to withstand the weight of the water!
$ u( n1 V# W4 [7 ]公仔箱論壇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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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。) @! J& m3 g1 v7 `/ V* [
The Incredible Magdeburg Water Bridge in Germany
$ K! [1 @! E! w! M+ _$ m) |/ bThe 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.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。0 l& T' z+ _, O5 X8 w- B3 Z8 c, n
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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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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