本帖最後由 lilitan008 於 2011-10-3 12:57 PM 編輯 , N5 c7 F2 D: i' P: ~3 S- @
) l/ S K4 U3 P: QTVBNOW 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。If you are not a Physics person, read on and learn a fact of physics. 公仔箱論壇% ]6 S7 c8 A' h! k% X
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Even after you see it, it is still hard to believe!公仔箱論壇1 N' Z1 J9 ~6 A$ n! A
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。, O+ x3 R3 j" Y8 b. b
8 ]6 P/ @$ D+ }; F* {9 vTVBNOW 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!
+ W% ], ^# v1 c1 w* i5 h% TThis is a channel-bridge over the River Elbe and joins the former East and West Germany as part of the unification project. ! f k" h1 x# w& _7 Y
It is located in the city of Magdeburg, near Berlin.tvb now,tvbnow,bttvb' l6 x! T% |7 {: |( W* M
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。5 U6 z; L& k% Q; Y2 {1 h1 E: J% `
The photo was taken on the day of inauguration.
5 E' k- i1 V- H6 b5.39.217.76To those who appreciate engineering projects, here's a puzzle for you armchair engineers and physicists.tvb now,tvbnow,bttvb8 g+ z% x" e, i: u! q
, u: K$ E' S& O- K- \7 Jtvb now,tvbnow,bttvbQuestion:
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Did that bridge have to be designed to withstand the additional weight of ship and barge traffic,
6 d |; _, \" n. C v' e1 |; d5 ~tvb now,tvbnow,bttvbOr 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!
/ x N1 U l$ i+ P0 z% o! _. KTVBNOW 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。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
9 j, H- w& N3 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。
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0 w7 n7 b9 } K. h- }' w公仔箱論壇The Incredible Magdeburg Water Bridge in Germany
" u# |: b. {' A4 E* ^2 Z9 CTVBNOW 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。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.公仔箱論壇& z- O1 s& y5 X1 V
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- d m9 Q$ ]& a+ x g
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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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2 v* x m3 E( u& x1 W" ~; VTVBNOW 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。, v6 I9 l- c$ ~; H" N2 N$ N
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