本帖最後由 lilitan008 於 2011-10-3 12:57 PM 編輯
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* W) N; [! d! l0 n, f! VIf you are not a Physics person, read on and learn a fact of physics. 2 X6 I2 X$ i5 Q+ F
AMAZING!
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9 f$ A3 x8 S- ?7 t3 K7 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。Even after you see it, it is still hard to believe!5.39.217.76/ V/ U8 Y3 W$ g- M
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Magdeburg Water Bridge in Germany What a feat! Six years, 500 million euros, 918 meters long. Now this is engineering!
7 W& g" J' f9 Z- Q* O! i, ptvb 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.
. N, s2 i: M$ E1 [公仔箱論壇It is located in the city of Magdeburg, near Berlin.
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The photo was taken on the day of inauguration.
+ r/ o' b4 X+ \3 G# q- W9 R公仔箱論壇To those who appreciate engineering projects, here's a puzzle for you armchair engineers and physicists.tvb now,tvbnow,bttvb4 O8 x) y7 E; L5 G3 ~2 L
3 N) b p% k. |1 d" U1 @Question:, h% i p8 v. V# X- i8 z
4 _) t+ @4 Z4 A: P! M5.39.217.76Did 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。8 d/ K# F2 f8 P, s, i
Or just the weight of the water? tvb now,tvbnow,bttvb* G6 }. w( w$ N+ A
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) ]2 l4 R5 N+ k9 \7 |
Answer:
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It only needs to be designed to withstand the weight of the water!
& [8 }! s, A! z/ UWhy? A ship always displaces an amount of water that weighs the same as the ship, regardless of how heavily a ship may be loaded% b% V7 m6 ^2 u
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( ^# B% t9 W6 F' h: v% ?; g/ J公仔箱論壇The Incredible Magdeburg Water Bridge in Germany
9 R& T+ ~2 R* j; P( T% u, w& n) w公仔箱論壇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.
* Q/ e' W! n Q+ X4 g# \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. 5.39.217.768 p, x8 c6 j7 z5 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.
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4 ^* a# h2 @8 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。
- n" S3 p; \7 M3 kTVBNOW 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。
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