本帖最後由 lilitan008 於 2011-10-3 12:57 PM 編輯 tvb now,tvbnow,bttvb5 O& v7 q. h1 `3 q `$ i3 }
5 r. f+ f% a" Z. M+ Q( |If you are not a Physics person, read on and learn a fact of physics. 公仔箱論壇( ]' F: f' Y; S( j g8 Z& x! [
AMAZING!
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Even after you see it, it is still hard to believe!: Q6 U7 n5 i8 Z3 l* [- Q0 |
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Magdeburg Water Bridge in Germany What a feat! Six years, 500 million euros, 918 meters long. Now this is engineering! h# C' f. c! P# w! n% h
This is a channel-bridge over the River Elbe and joins the former East and West Germany as part of the unification project. tvb now,tvbnow,bttvb7 I6 X& x. N! ^) P+ O( K9 F* R
It is located in the city of Magdeburg, near Berlin. D; H& q/ B" N6 H2 X
5 C+ w1 G+ k/ S6 z' d. ~7 b' Q! rThe photo was taken on the day of inauguration.) W& C. S, z# m& B0 }
To those who appreciate engineering projects, here's a puzzle for you armchair engineers and physicists.公仔箱論壇8 d9 ?1 ^4 W7 E, N3 K3 A. A
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Question:
8 k6 N9 S: p$ @+ J# nTVBNOW 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。5.39.217.76) x7 V( \0 l: W5 H# b/ q" [
Did that bridge have to be designed to withstand the additional weight of ship and barge traffic,
( u$ L' k& \0 ltvb now,tvbnow,bttvbOr just the weight of the water? - C* A! l; V3 K$ F
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Answer:tvb now,tvbnow,bttvb; E( e5 n9 q( b% a- P& m
2 A% b+ U( u9 C( ]公仔箱論壇It only needs to be designed to withstand the weight of the water! 5.39.217.765 @# G4 f' P$ B' i2 |0 }$ k
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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The Incredible Magdeburg Water Bridge in Germany
9 ]: v0 A7 N# m. s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.
7 @$ c6 M9 K3 M0 H$ y: Y& M7 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。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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$ I6 G# O U2 T5 C% qConstruction 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. tvb now,tvbnow,bttvb U0 V7 b) G- }1 M4 W8 G$ L/ 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。0 c! `& k: i+ k- O- V/ t
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5 t( w; D6 q) _1 x2 q6 m/ D+ k, 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。tvb now,tvbnow,bttvb1 ]/ C$ S0 M& d) `# z3 ~8 C
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