本帖最後由 lilitan008 於 2011-10-3 12:57 PM 編輯
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" ]3 p( f/ p E+ C2 \6 rwww3.tvboxnow.comIf you are not a Physics person, read on and learn a fact of physics.
. x9 ~) d; N& ITVBNOW 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。AMAZING!
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* }, Z: K, L. r. q1 q2 dwww3.tvboxnow.comEven after you see it, it is still hard to believe!
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S$ n- L6 }& [6 M: U% O A6 oTVBNOW 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。Magdeburg Water Bridge in Germany What a feat! Six years, 500 million euros, 918 meters long. Now this is engineering! 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。" S2 f: |+ X0 C$ Z' j6 n* K
This is a channel-bridge over the River Elbe and joins the former East and West Germany as part of the unification project.
' Y7 c% g4 ?2 ?8 a6 M6 w+ S6 h. [3 b) Vtvb now,tvbnow,bttvbIt is located in the city of Magdeburg, near Berlin.
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: f e8 l( y2 l% P) nThe photo was taken on the day of inauguration.' L5 H5 B( W% o* B( ^8 @: _0 `' M
To those who appreciate engineering projects, here's a puzzle for you armchair engineers and physicists.
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Question:
1 U* p6 J( @$ sTVBNOW 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& B: |$ f, a$ zDid that bridge have to be designed to withstand the additional weight of ship and barge traffic,
0 Y3 i+ l: e6 o4 Nwww3.tvboxnow.comOr just the weight of the water?
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Answer:
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) \/ u- \5 c: {' c7 ]8 s* O7 nIt only needs to be designed to withstand the weight of the water! www3.tvboxnow.com; x* j1 v9 [, B) J8 \$ ~* v5 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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* R* ~, e7 U; A3 u: H; J, eThe Incredible Magdeburg Water Bridge in Germany
F2 J4 |( U0 T: x6 U! L$ B2 h6 NTVBNOW 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。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.www3.tvboxnow.com. L* P" v: C5 G) S
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.
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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. 3 L( m1 P5 n& {% l
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+ G4 D& V- o8 ^9 Q+ FTVBNOW 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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