本帖最後由 lilitan008 於 2011-10-3 12:57 PM 編輯
/ s. Y4 f* L7 m# e) n# RTVBNOW 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。
, {$ P* b4 i- d! FIf you are not a Physics person, read on and learn a fact of physics.
6 z0 A* Y* S6 ZTVBNOW 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。AMAZING! tvb now,tvbnow,bttvb( D" v1 v5 f5 O y% W
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Even after you see it, it is still hard to believe!
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$ y# i& {; \6 o' S6 e0 pTVBNOW 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。
t2 R& p! X1 H2 YTVBNOW 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!
, u; r" D; P) J. E1 a0 O fThis is a channel-bridge over the River Elbe and joins the former East and West Germany as part of the unification project.
8 U/ `! L2 @5 E$ GIt is located in the city of Magdeburg, near Berlin.公仔箱論壇& }1 B6 _( Y4 d
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The photo was taken on the day of inauguration.
; m; R* n2 b+ h4 s8 |( K0 y3 STo those who appreciate engineering projects, here's a puzzle for you armchair engineers and physicists.
; k5 P" Z. H# a4 rTVBNOW 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。! y0 D) `. C4 B, {. [
Question:
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Did that bridge have to be designed to withstand the additional weight of ship and barge traffic,
& }: |: k& q% b% G8 nOr just the weight of the water?
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Answer:5.39.217.76- h+ K/ g4 p7 m V9 w/ }" `
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It only needs to be designed to withstand the weight of the water!
& h0 P- Q+ { {* U1 n公仔箱論壇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
]1 f0 @- a8 |* v公仔箱論壇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。: ]) B8 @; Q( o, h+ J! [
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The Incredible Magdeburg Water Bridge in Germanytvb now,tvbnow,bttvb" ^" {$ s" V; Y) i% B4 z. L) W2 G
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.
! P: c% @" c/ n$ w- T9 y; c& @tvb now,tvbnow,bttvbThe 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. 5.39.217.76) m$ p) i$ P! R( {1 r
( w I3 X; V- f$ h& n4 \" LConstruction 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. 1 T6 u* L" ]5 U& s& d; n
o" E4 @& R/ |- J+ _* Gtvb now,tvbnow,bttvb公仔箱論壇1 w& }0 O/ j. E C6 `
! H: ~. {! Z3 p5 @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。
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