本帖最後由 lilitan008 於 2011-10-3 12:57 PM 編輯 5.39.217.76, m2 l% z. p# d1 n+ h$ Z
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If you are not a Physics person, read on and learn a fact of physics.
7 B: `, i1 H% ?" Z公仔箱論壇AMAZING!
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Even after you see it, it is still hard to believe!- w5 D+ I( Z7 |% V' j6 Y+ H; d
7 l1 n. z. K0 G% J7 F/ y/ d( tTVBNOW 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+ t7 \& b2 g
Magdeburg Water Bridge in Germany What a feat! Six years, 500 million euros, 918 meters long. Now this is engineering!
7 n9 b9 J, s# O& R2 q+ l5.39.217.76This is a channel-bridge over the River Elbe and joins the former East and West Germany as part of the unification project. $ s. |% |! L2 F( g5 @$ w. m: r+ P
It is located in the city of Magdeburg, near Berlin.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! c- [ p; \( c+ _3 j
8 q. P& T4 e `, {tvb now,tvbnow,bttvbThe photo was taken on the day of inauguration.3 t; F# f- ?$ S" \
To those who appreciate engineering projects, here's a puzzle for you armchair engineers and physicists.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。2 P- k/ r5 }# X: M* C5 `
& v9 j+ N+ s3 ~3 m& K+ n5.39.217.76Question:
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3 C- e8 D. ?& U' V: f) k, m公仔箱論壇Did that bridge have to be designed to withstand the additional weight of ship and barge traffic,+ _8 s& Q9 q$ U7 t. V
Or just the weight of the water?
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" W- ]5 H& u0 I! {: a; FAnswer:# k0 d1 S, I2 I0 O, f& M
3 t2 n2 K) y% ]tvb now,tvbnow,bttvbIt only needs to be designed to withstand the weight of the water!
( o. _6 [# T: qWhy? 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 Germanytvb now,tvbnow,bttvb, U0 S! r: N# z
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.
5 T; {- z: p. 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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/ T" ~3 s4 O9 F: r6 Htvb now,tvbnow,bttvbConstruction 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. 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。% C1 |4 p- g2 d; Y
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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。& h+ q' \! n4 J
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