本帖最後由 lilitan008 於 2011-10-3 12:57 PM 編輯 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。8 v$ a, q3 d* k( c
; h9 a; U( \/ |$ Z6 }3 P" xIf you are not a Physics person, read on and learn a fact of physics.
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Even after you see it, it is still hard to believe!5.39.217.76* q0 Z, u, m& L0 G; X5 s& ^# M
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7 y# _! n9 n! T; a2 Q1 h FMagdeburg Water Bridge in Germany What a feat! Six years, 500 million euros, 918 meters long. Now this is engineering!
- b- J) Y; M5 P: ?5.39.217.76This is a channel-bridge over the River Elbe and joins the former East and West Germany as part of the unification project.
2 R0 y r% I: z8 G+ b+ M0 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。It is located in the city of Magdeburg, near Berlin.公仔箱論壇8 [7 b8 k0 P3 i0 b4 j( E
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The photo was taken on the day of inauguration.5.39.217.76* g9 E1 {6 o. W# R! c7 F# A, y
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。6 J& z; g* Q* O9 L* K5 J: F
6 k3 c2 R: n& B0 a# N0 T公仔箱論壇Question:公仔箱論壇, z: P0 A3 l# F# N. x' T1 O
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。7 G3 U8 v" K: k& D' D6 _* G6 {
Did that bridge have to be designed to withstand the additional weight of ship and barge traffic,
! ~4 f1 }9 U' |8 C: v# Q/ j8 r3 MTVBNOW 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。Or just the weight of the water?
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Answer:
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It only needs to be designed to withstand the weight of the water! tvb now,tvbnow,bttvb; `! j4 m' O- e7 u" [1 K' d
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$ M$ v' Y, I- G4 G9 z9 F4 ?
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。4 e- R9 B; K8 N& }3 `
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. 公仔箱論壇6 R% Y9 g& @: S/ J! c
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Construction 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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5 G6 _( k2 v4 s; v/ wTVBNOW 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,bttvb5 d/ n: Q) f* o6 s3 F" @
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9 ~: m6 p: D6 j; 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。- e1 P V. H+ w+ |" S1 u
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