本帖最後由 lilitan008 於 2011-10-3 12:57 PM 編輯 2 B( e4 ?' l1 S# R2 v2 {
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If you are not a Physics person, read on and learn a fact of physics. 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。' D* O1 H, u" I i8 h& S! j2 B
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Even after you see it, it is still hard to believe!公仔箱論壇, h/ w; K. D5 m% b& O6 x
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6 b, s+ `/ E6 |+ L, VMagdeburg Water Bridge in Germany What a feat! Six years, 500 million euros, 918 meters long. Now this is engineering!
1 e1 E) G! I8 w" l6 ~: s8 m8 xtvb 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.
5 i+ h# ?- W6 x G公仔箱論壇It is located in the city of Magdeburg, near Berlin.
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( E! u* C6 k# U- k, Iwww.tvboxnow.comThe photo was taken on the day of inauguration.
" U: n5 a1 B3 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。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。# _/ s2 g+ [# N3 F
) Q; n) `/ F* b3 V6 f0 R; y- d公仔箱論壇Question:
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Did that bridge have to be designed to withstand the additional weight of ship and barge traffic,
4 O+ U; N" ?/ m3 g. r6 zOr just the weight of the water? 公仔箱論壇# B! Y7 C- K2 Z" R7 {: ?+ @
7 R- j3 X/ W5 I: k3 T6 }, P" ?& sAnswer:www.tvboxnow.com' \! |( k+ ]: p$ Z2 d) z& A- t
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It only needs to be designed to withstand the weight of the water! 公仔箱論壇: ], N6 K! \2 e* {$ i) m
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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* H/ c. t3 R1 Gtvb now,tvbnow,bttvbThe Incredible Magdeburg Water Bridge in Germany
0 \( Z# U+ G4 p. j5 ?2 f8 qtvb now,tvbnow,bttvbThe 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。5 |+ `& N! ~/ q! I+ T. Y
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. www.tvboxnow.com1 h( T+ P0 Z& R$ _6 E( C$ C) M
! u* F; C* H2 L9 p2 j7 u9 utvb 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. , Y, E" U# L2 z) i. `8 p
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