本帖最後由 lilitan008 於 2011-10-3 12:57 PM 編輯
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% Z1 J4 s* _' WTVBNOW 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. tvb now,tvbnow,bttvb( Y$ b u& O$ F4 C( m
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. n; w6 p4 O) G0 BTVBNOW 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。Even 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。: D! o- J+ Q& i( c" A0 S6 Z8 }/ }; y1 ~
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。1 N9 x- c) b) ?5 p& c' ]2 V
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Magdeburg Water Bridge in Germany What a feat! Six years, 500 million euros, 918 meters long. Now this is engineering!
' m! U3 M, R9 C* U+ ^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。This is a channel-bridge over the River Elbe and joins the former East and West Germany as part of the unification project. tvb now,tvbnow,bttvb0 P$ I# W3 j2 l! ]" K. [7 Q4 y
It is located in the city of Magdeburg, near Berlin.- |2 ^% J: @/ F. Y8 f; ]
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The photo was taken on the day of inauguration.
4 b) d" ~- y$ O+ A" u1 g" ~/ }www3.tvboxnow.comTo those who appreciate engineering projects, here's a puzzle for you armchair engineers and physicists.tvb now,tvbnow,bttvb, K. U' J# E' |% |
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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,www3.tvboxnow.com5 [; O+ D b# A& Q. r1 t @
Or just the weight of the water? 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。% k7 [4 j# V+ O+ @( b! W( w5 X9 K
6 z1 _ a, U9 I5 K( kAnswer: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。! a! I9 R0 Z8 X/ d
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It only needs to be designed to withstand the weight of the water! www3.tvboxnow.com* s4 L! `, ?6 z% I( q
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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/ b. D$ _9 o1 C n+ h. jThe Incredible Magdeburg Water Bridge in Germany
* t( k; m! ]) F* Ftvb now,tvbnow,bttvbThe 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.
7 i$ v5 ^) \7 C- c. 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. tvb now,tvbnow,bttvb5 J+ x; X/ J3 g0 W* P$ H$ N! x: q5 z' 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. 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。! a3 t/ V3 R3 c6 ], C) {# Z
2 G( F; |2 T4 N; l' _ ~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。www3.tvboxnow.com* P6 \! E3 }, U
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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。5 c: k3 M: k; k- C- I( `
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