本帖最後由 lilitan008 於 2011-10-3 12:57 PM 編輯
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If you are not a Physics person, read on and learn a fact of physics.
8 T% x8 C6 `' X3 ]: K& U公仔箱論壇AMAZING! , N3 j: Z \/ @
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; B J7 G/ i8 f* b
Even after you see it, it is still hard to believe!公仔箱論壇: L. x4 O" n! Y
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Magdeburg Water Bridge in Germany What a feat! Six years, 500 million euros, 918 meters long. Now this is engineering! * V$ S+ k# P$ s7 L0 p6 A
This is a channel-bridge over the River Elbe and joins the former East and West Germany as part of the unification project.
6 q; J8 I6 s5 X, h6 @( Z# m( z: dwww.tvboxnow.comIt is located in the city of Magdeburg, near Berlin.
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The photo was taken on the day of inauguration.
7 O+ z. F, M4 o, iwww.tvboxnow.comTo those who appreciate engineering projects, here's a puzzle for you armchair engineers and physicists.
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Question:, \1 Q* Q& d8 G! ~4 f6 W
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Did that bridge have to be designed to withstand the additional weight of ship and barge traffic,
0 Q1 g8 V) [' DOr just the weight of the water? ' L% Y2 o; C7 T: b9 @; ]4 n% E
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Answer:
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It only needs to be designed to withstand the weight of the water! ! P& l4 K3 e& E) p. m$ k" k
Why? A ship always displaces an amount of water that weighs the same as the ship, regardless of how heavily a ship may be loadedTVBNOW 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。% N4 G. \. i, U8 H. r
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0 _: G' ^9 s- ?; `公仔箱論壇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。; Q- [6 {' X8 q
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* ]! c6 ?0 E: f* z. R. z% v. X/ |
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. tvb now,tvbnow,bttvb! P8 B- A2 g) M" Q" a" e$ U8 ~
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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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: e1 L! \6 _5 z% @; x9 d4 k2 HTVBNOW 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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: T$ ^( f# q6 z, c. U3 T1 Z4 uTVBNOW 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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發表於 2011-10-2 10:09 PM
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