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.
- w( r. C% ^1 I) c7 T g, ^! }AMAZING! 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。$ h0 W# c0 I# n
% B) W0 O+ M2 Q; J! Ttvb now,tvbnow,bttvbEven after you see it, it is still hard to believe!
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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。. A2 r( a1 Y( d: g9 b1 z
Magdeburg Water Bridge in Germany What a feat! Six years, 500 million euros, 918 meters long. Now this is engineering! 5.39.217.77:88983 {! m, K; F2 C/ T& D% v8 `7 |
This is a channel-bridge over the River Elbe and joins the former East and West Germany as part of the unification project. 5.39.217.77:8898. X5 \* B! ?6 u# h; @
It is located in the city of Magdeburg, near Berlin.' [% l# F) n* P8 t2 o" I
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The photo was taken on the day of inauguration.; v9 w* J3 Z' v& i R9 w' o) I) h
To those who appreciate engineering projects, here's a puzzle for you armchair engineers and physicists.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 m: F, w. ]$ a
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Question:
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' b5 V' ], N& }; {公仔箱論壇Did that bridge have to be designed to withstand the additional weight of ship and barge traffic,: E& O. M9 n/ C" [2 U
Or just the weight of the water?
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Answer: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。, Y3 s0 w9 E- _7 T9 U
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It only needs to be designed to withstand the weight of the water!
% n/ h3 `8 I' I# H. C, D+ ?# tTVBNOW 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
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) R( l# U$ m! b7 F$ V2 e- y9 e公仔箱論壇The Incredible Magdeburg Water Bridge in Germany公仔箱論壇8 ]/ |$ O4 e$ C: }
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.
, E0 s, U, o7 H& dThe 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: l9 l" f% M4 e: l$ g4 S+ K
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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.
1 T1 ^. C5 u0 V0 @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。
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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。8 G; g+ w! w$ y% I8 x/ }) g
( w; i& y+ _6 k8 tTVBNOW 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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