本帖最後由 lilitan008 於 2011-10-3 12:57 PM 編輯 tvb now,tvbnow,bttvb+ w Y/ H4 P, [5 O' J# z# t7 \
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If you are not a Physics person, read on and learn a fact of physics. 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。0 H! I. |7 x! h3 r/ B" ~
AMAZING! * n/ ~) |" N# @+ I& F% l! U) T
& e7 G) N4 n7 |: K% g5 b: O8 K5.39.217.77Even after you see it, it is still hard to believe!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。% n# j, P& l4 I0 R
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! ^: V, n; L5 y+ j% o: H. oMagdeburg Water Bridge in Germany What a feat! Six years, 500 million euros, 918 meters long. Now this is engineering! x" B) j$ v2 O. u
This is a channel-bridge over the River Elbe and joins the former East and West Germany as part of the unification project. 8 A3 l L9 o5 r4 ]! A" A4 i3 @
It is located in the city of Magdeburg, near Berlin.
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9 H. g! c! b5 L& C$ a公仔箱論壇The photo was taken on the day of inauguration.
% Q. P* M$ m& M* ^! GTVBNOW 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。To those who appreciate engineering projects, here's a puzzle for you armchair engineers and physicists.
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Question:
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Did that bridge have to be designed to withstand the additional weight of ship and barge traffic,tvb now,tvbnow,bttvb' ~' P4 c. N' D# E3 D$ C& n: D8 x
Or just the weight of the water? tvb now,tvbnow,bttvb9 D% D5 r- Z' K. T* F0 i- B3 D2 t3 ]
, V) F8 Y6 h' \ D5.39.217.77Answer: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。0 ?0 [5 ~, P- |+ r
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It only needs to be designed to withstand the weight of the water!
: R2 S' W3 t. I4 P公仔箱論壇Why? A ship always displaces an amount of water that weighs the same as the ship, regardless of how heavily a ship may be loaded5.39.217.77$ O2 L+ v; k$ v. s t/ T
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) n" ]6 L( Y: W% h7 Y. B5.39.217.77The Incredible Magdeburg Water Bridge in Germany
4 P3 A2 {& o/ B/ R# KThe 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) ^- X" c( O5 t8 f- n0 h; D
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. 1 r9 z$ A" e' Z; c/ |
/ |+ H/ ?, z: e' r5.39.217.77Construction 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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