本帖最後由 lilitan008 於 2011-10-3 12:57 PM 編輯
- X( H% z# `+ E8 W公仔箱論壇
$ g% J9 a* _& j8 r, k/ TIf you are not a Physics person, read on and learn a fact of physics.
+ X, Q8 n( \& e: a/ b8 o0 mAMAZING!
6 r/ S v( s0 v( 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。
4 Q4 E' G% ~" r2 g7 I: JTVBNOW 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!
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7 s4 B/ _# @* }' Q- h W: K公仔箱論壇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。) [; ]3 u* H7 O2 v) z: ^. ~4 f
Magdeburg Water Bridge in Germany What a feat! Six years, 500 million euros, 918 meters long. Now this is engineering!
7 t5 w+ a1 z! U; C5 q9 Q( I6 c" Ytvb now,tvbnow,bttvbThis is a channel-bridge over the River Elbe and joins the former East and West Germany as part of the unification project.
; Z l4 v$ v8 _It is located in the city of Magdeburg, near Berlin.
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The photo was taken on the day of inauguration.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。) L3 ~! `# W) g1 F- f
To those who appreciate engineering projects, here's a puzzle for you armchair engineers and physicists.
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Question:
5 l& x5 e; y$ w% r! v2 c3 G7 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。5.39.217.76# f4 b2 V; g' E: I- X D" G
Did that bridge have to be designed to withstand the additional weight of ship and barge traffic,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 G u* E( M& b- ?. B+ U. f
Or just the weight of the water?
8 ^! Z: v( g7 R& 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。tvb now,tvbnow,bttvb- p" b- j1 ~% a4 o
Answer:
9 @! Q" O3 r8 Jtvb now,tvbnow,bttvb公仔箱論壇0 F6 i" n: |! \! S3 n
It only needs to be designed to withstand the weight of the water! tvb now,tvbnow,bttvb E7 C- f, K3 f. h9 ~
Why? A ship always displaces an amount of water that weighs the same as the ship, regardless of how heavily a ship may be loaded8 v. X& l( Q# Q3 @& L
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The Incredible Magdeburg Water Bridge in Germany公仔箱論壇" t& B N/ Y. w+ y
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.tvb now,tvbnow,bttvb5 Q0 k: Z, }. c+ W. E0 R
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. 5.39.217.76! K* X9 m) X) c0 n- r
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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. 5.39.217.765 e8 O. g9 Z1 R
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7 p6 {% L( a$ m7 P: 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。tvb now,tvbnow,bttvb3 a" K& ^7 a* k4 p2 c6 s
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; H; h: {* \6 [- W3 u6 j( eTVBNOW 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。7 B7 A% i" H9 M1 j! N4 I4 |& c/ D+ Z1 T
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