本帖最後由 lilitan008 於 2011-10-3 12:57 PM 編輯
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& u9 s9 @# q( s0 ?$ V! @& {If you are not a Physics person, read on and learn a fact of physics. 公仔箱論壇7 I C+ ?" x f# K; b0 X {5 F
AMAZING! tvb now,tvbnow,bttvb6 v: v0 J3 T- e7 Y' s
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Even after you see it, it is still hard to believe!公仔箱論壇: d: K! o+ m. n
9 A+ r! K* H3 {, e/ w) c hTVBNOW 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。
; e9 G; ?6 M6 p% 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。Magdeburg 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。* I6 M- N7 E: S; A. F
This is a channel-bridge over the River Elbe and joins the former East and West Germany as part of the unification project.
7 Y, i. Y) @7 @ A$ m/ s4 ~公仔箱論壇It is located in the city of Magdeburg, near Berlin.
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4 N7 ?& w# |, }公仔箱論壇The photo was taken on the day of inauguration.
# q$ N7 [$ ]: q% v' U* BTo those who appreciate engineering projects, here's a puzzle for you armchair engineers and physicists.tvb now,tvbnow,bttvb2 d, ] N! h% W! L, r/ ]9 D, C& A
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Did that bridge have to be designed to withstand the additional weight of ship and barge traffic,
: b9 C8 N7 a4 T O/ J公仔箱論壇Or just the weight of the water?
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; n1 P, @1 J4 |! ^' d* ~% }Answer:公仔箱論壇) l$ c( v, ?7 W! O+ i- G5 ?
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It only needs to be designed to withstand the weight of the water!
|1 b7 k; ? a9 v% M$ H% S9 otvb now,tvbnow,bttvbWhy? 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 I2 N2 R L, f, |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。; N' B5 J; @5 F# y
The Incredible Magdeburg Water Bridge in Germany公仔箱論壇& T) c5 @7 T! M& S& h
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.
# |: E3 U: k4 o4 h; [& OThe 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. tvb now,tvbnow,bttvb: s& e- u5 U) }, @
% ] F B! \! U; FConstruction 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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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 W+ T- _0 x8 P& e6 J: z
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