本帖最後由 lilitan008 於 2011-10-3 12:57 PM 編輯
3 ]1 i$ [; A4 r c6 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。tvb now,tvbnow,bttvb! Y: w3 c% h+ `2 p9 k" z' }* j
If you are not a Physics person, read on and learn a fact of physics.
6 l& m U+ m3 C8 k$ E1 lAMAZING! 公仔箱論壇( h' _$ I1 ^( u A5 L
' W5 V( D9 U, F4 L" i" l/ S+ `) G公仔箱論壇Even after you see it, it is still hard to believe!
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Magdeburg Water Bridge in Germany What a feat! Six years, 500 million euros, 918 meters long. Now this is engineering!
; Y- j5 N, h; Z$ w; {1 YThis is a channel-bridge over the River Elbe and joins the former East and West Germany as part of the unification project. 5.39.217.763 l! i: P o9 t( F: ?" H0 W
It is located in the city of Magdeburg, near Berlin.; K( W7 h9 J1 ^' A5 [" H
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To those who appreciate engineering projects, here's a puzzle for you armchair engineers and physicists.5.39.217.76. ^: g/ q$ ~7 O
公仔箱論壇' m/ ?. ^, Z R; W' i4 U+ } M9 G
Question:
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. L X# K; N+ q2 m公仔箱論壇Did that bridge have to be designed to withstand the additional weight of ship and barge traffic,
( Y9 P9 N# }+ x6 [$ O公仔箱論壇Or just the weight of the water? 8 u+ h5 b9 K& ?- t1 V8 w+ r
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Answer:
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/ G& [: _: X" @$ w+ f: b, o公仔箱論壇It only needs to be designed to withstand the weight of the water!
; j# j' V' G4 C+ @tvb 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 loadedtvb now,tvbnow,bttvb" i* t0 ^ b$ U$ f- w
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6 T& }5 n# j: N9 Z5.39.217.76The Incredible Magdeburg Water Bridge in Germany5.39.217.76) [# ]3 M! J; ]# o0 W( k7 W8 K- 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.
+ l+ v8 U9 K, U( Z7 Q* f公仔箱論壇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.
3 b( \; p# Y5 J/ I; B5 N7 XTVBNOW 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。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。) u7 h& p) A. M
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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$ ^' l- ?7 f1 Y0 ETVBNOW 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。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。# K4 o0 W# ^4 f6 K6 z) F5 g ]6 s
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