本帖最後由 lilitan008 於 2011-10-3 12:57 PM 編輯 公仔箱論壇1 C: P4 Y7 E( B
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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。: b: I" k% T$ R4 Q
AMAZING!
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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。* _' ]' K# f( j) g5 q4 A5 X a' R
9 f* y# M# _7 n# b2 W' S y# W& |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 X' n; ~. {, k! I: N# n$ j公仔箱論壇Magdeburg Water Bridge in Germany What a feat! Six years, 500 million euros, 918 meters long. Now this is engineering!
, I1 _& }) p D7 S4 P2 [ |9 kThis 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 L) {6 z' z( d& Y- Z _
It is located in the city of Magdeburg, near Berlin.
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' H1 C& e& y: s0 R# O公仔箱論壇The photo was taken on the day of inauguration.
6 Y) {* @9 j1 O5 atvb now,tvbnow,bttvbTo those who appreciate engineering projects, here's a puzzle for you armchair engineers and physicists.5.39.217.76% p3 S5 a- e# V- D, H
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Question:tvb now,tvbnow,bttvb7 G. D8 o4 I+ r& I* e2 {* _
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Did that bridge have to be designed to withstand the additional weight of ship and barge traffic,
$ b/ U5 M) C+ M8 S公仔箱論壇Or just the weight of the water?
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It only needs to be designed to withstand the weight of the water! 4 y+ E% a1 R/ V
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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8 m9 g0 g b; F1 a$ [2 s公仔箱論壇The Incredible Magdeburg Water Bridge in Germany
- t- m4 p7 |% S: v. N" _+ ]9 cThe 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.( t6 k* r. N; n' b! q0 v: G
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. 公仔箱論壇$ @: u9 o& d9 [, `& I' r5 {
# Q4 W8 |1 g9 m3 B* z0 c; RTVBNOW 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。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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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。% _* w4 P$ n2 C; z
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