本帖最後由 lilitan008 於 2011-10-3 12:57 PM 編輯 5.39.217.76: z/ V' a! `9 x2 b! w4 a
; f* x; h, ^+ gtvb now,tvbnow,bttvbIf you are not a Physics person, read on and learn a fact of physics. 5.39.217.76$ `6 J' [3 _ H- W1 \& F
AMAZING!
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& q @% p+ |* {" k% {% W4 E* i7 cEven after you see it, it is still hard to believe!5.39.217.765 }# H3 J1 Z T" w. P# r
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& R a( W- |- ^: nMagdeburg Water Bridge in Germany What a feat! Six years, 500 million euros, 918 meters long. Now this is engineering! 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。6 u8 n* k5 D( e" s6 F/ f# G( t& p& b
This is a channel-bridge over the River Elbe and joins the former East and West Germany as part of the unification project.
" [2 M; ]$ e+ _+ v$ T. N8 c5.39.217.76It is located in the city of Magdeburg, near Berlin.
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The photo was taken on the day of inauguration.tvb now,tvbnow,bttvb% Y% u1 A1 C* k6 \/ `' k: b
To those who appreciate engineering projects, here's a puzzle for you armchair engineers and physicists.tvb now,tvbnow,bttvb; Q; o4 N' ]( P6 ~# i
% q; n# u2 Y. C; }3 r" e) b公仔箱論壇Question:3 q% i$ a' D: u* w3 n, Q
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Did that bridge have to be designed to withstand the additional weight of ship and barge traffic,3 t5 l5 [( M' Z) U6 Z9 S4 Q
Or just the weight of the water? tvb now,tvbnow,bttvb# B# E) p! w7 j
# E) O- ?8 Z: x) K1 s5.39.217.76Answer:公仔箱論壇$ u$ S: z: ^; W
) Z* \/ C) R9 `, ]) j" c5 y4 x+ jTVBNOW 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。It only needs to be designed to withstand the weight of the water! 5.39.217.76+ N2 S" E$ k, z" E
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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0 `% i: L; q0 ^% W( K" Y# X! V' m公仔箱論壇The Incredible Magdeburg Water Bridge in Germany7 u$ U6 Q: K+ D# X5 O( ]+ p' A
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.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。, S+ `. ]) l! L
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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8 z P. b" o+ i( O8 d$ Jtvb 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.
7 ]/ A$ ?7 @; a1 K/ Z0 X1 DTVBNOW 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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$ c$ F2 ~' g) ~1 x7 F5 ?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。$ f( s2 X: Q6 B
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