本帖最後由 lilitan008 於 2011-10-3 12:57 PM 編輯
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' G3 S6 F0 I! J3 D9 XIf you are not a Physics person, read on and learn a fact of physics.
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1 D4 M) a# W6 Y& v! N: 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。
, g' r1 {8 Z3 ]* VEven after you see it, it is still hard to believe!公仔箱論壇; W" g% X0 x; r: g# v
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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。2 q' L. r1 o. v1 G
This is a channel-bridge over the River Elbe and joins the former East and West Germany as part of the unification project. 4 N- `8 v& U z$ V
It is located in the city of Magdeburg, near Berlin.tvb now,tvbnow,bttvb" Y$ Y3 |; W: c: N i0 P
& F, Q, L; I# Y! g$ E- q7 j g8 M8 cThe photo was taken on the day of inauguration.tvb now,tvbnow,bttvb: y( A9 `" T1 o' {6 h
To those who appreciate engineering projects, here's a puzzle for you armchair engineers and physicists.
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7 t {9 N: m: v% `0 E公仔箱論壇Question:公仔箱論壇 D( G) M6 c) c% U
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Did that bridge have to be designed to withstand the additional weight of ship and barge traffic,
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6 G/ ?: c" S# L" x, T+ S5 u公仔箱論壇Answer:
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2 B. d1 i. l* q5 D2 [! h( u5.39.217.76It only needs to be designed to withstand the weight of the water!
0 X* Q, c- P4 q( A, RWhy? A ship always displaces an amount of water that weighs the same as the ship, regardless of how heavily a ship may be loaded公仔箱論壇0 W8 b* J, p9 K7 {& e5 i8 b
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The Incredible Magdeburg Water Bridge in GermanyTVBNOW 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; [* O3 h7 f7 l4 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.5.39.217.76 W+ f- m$ s* A7 k
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.
9 w2 [+ D- ?8 k- |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。
& u; U o* q9 \. ^) ^! q# V5.39.217.76Construction 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. 6 e( V5 H4 _; z
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4 v- Z% q2 w9 w0 S! o FTVBNOW 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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+ a8 t1 V/ b( S+ 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。公仔箱論壇# c- P+ F2 z [8 v9 L7 v. O
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發表於 2011-10-2 10:09 PM
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