本帖最後由 lilitan008 於 2011-10-3 12:57 PM 編輯 5.39.217.765 U/ l1 M. V8 E1 l3 k$ k H4 m8 q: Q
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If you are not a Physics person, read on and learn a fact of physics. 公仔箱論壇3 B. [, b$ F! n( \: a1 M
AMAZING! 公仔箱論壇& [# k/ B# ?+ d% N8 h
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Even after you see it, it is still hard to believe!! w- r0 U L# h* B3 C
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Magdeburg Water Bridge in Germany What a feat! Six years, 500 million euros, 918 meters long. Now this is engineering!
% r6 q; U; k% L3 @0 y4 }tvb now,tvbnow,bttvbThis 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。! N/ J2 Q, m# z+ ^, x4 E
It is located in the city of Magdeburg, near Berlin.公仔箱論壇: W9 y6 L+ b" O# ?1 N9 v4 ]1 r' P
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The photo was taken on the day of inauguration.( ?0 K& s( J# R# i8 q
To those who appreciate engineering projects, here's a puzzle for you armchair engineers and physicists. Q4 O/ o5 U+ V4 V* _8 @: I
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Question:
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Did that bridge have to be designed to withstand the additional weight of ship and barge traffic,
, Q, a5 V5 Y/ o2 c; |4 B公仔箱論壇Or just the weight of the water?
6 S( h: p- T* M7 ~2 X. x; d3 c: G2 i5.39.217.76TVBNOW 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。4 I; O, n: g; h1 s4 s5 P0 |+ ]/ z7 R
Answer:
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H: h! q9 T# `% l2 T) V公仔箱論壇It only needs to be designed to withstand the weight of the water! & u/ y* W7 h' H- `4 r/ s, u! r* i
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公仔箱論壇$ E/ @' U) m* x; g( q6 s+ U
8 x" w3 @: K/ M) V; Z* d9 }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。公仔箱論壇8 ^! H* S6 g2 c6 Z# n [
The Incredible Magdeburg Water Bridge in Germany7 w7 W! Z9 G+ J5 |5 Q
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.公仔箱論壇3 |5 \ i* `* w9 ^
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. / E7 @9 l' g5 J/ G1 \9 P
9 T( [7 ? @( B2 eTVBNOW 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。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. , }; p% Q9 r0 E( C' j8 Z) A
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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 `8 O5 c# V7 ~2 d6 k
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0 N6 C9 A+ [3 X/ `0 ?2 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。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。: c. J$ s; _) ?8 l- k
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