本帖最後由 lilitan008 於 2011-10-3 12:57 PM 編輯 公仔箱論壇( A* H D7 \0 s. {) f: ^
, R1 Z5 P$ E" _) T, _6 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。If you are not a Physics person, read on and learn a fact of physics. $ p& N Y0 ?! c6 V' E0 V
AMAZING!
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7 i! r- T- [. V! T4 U$ E) J( vtvb now,tvbnow,bttvbEven after you see it, it is still hard to believe!公仔箱論壇, X' u& h5 Q' ?3 M1 H9 Q% x& {' [2 S
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Magdeburg Water Bridge in Germany What a feat! Six years, 500 million euros, 918 meters long. Now this is engineering!
. B9 e) x" a! g. f LThis is a channel-bridge over the River Elbe and joins the former East and West Germany as part of the unification project.
/ A. |! b& A/ y公仔箱論壇It is located in the city of Magdeburg, near Berlin.公仔箱論壇; V3 C: _" M8 u. T( y
) z/ P" I: t) p$ V/ P' 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。The photo was taken on the day of inauguration.0 n1 x8 M' n3 v- H& N
To those who appreciate engineering projects, here's a puzzle for you armchair engineers and physicists.
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. i; M* S) U, m; K$ t# w: ^/ X2 D公仔箱論壇Question:
1 o% i% c! W4 ?4 t/ r" 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。
! v0 s( J$ w& G* E) M- _) JDid that bridge have to be designed to withstand the additional weight of ship and barge traffic,5.39.217.763 j+ I3 h# {. m6 z }3 ?1 x
Or just the weight of the water?
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Answer:
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8 J7 Y" x3 Z4 ~& dtvb now,tvbnow,bttvbIt only needs to be designed to withstand 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。* m( Z( X1 K: ^+ }, a" D5 h
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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The Incredible Magdeburg Water Bridge in Germany3 n4 s$ h3 ~) G
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.
) a0 Z, @/ u; RThe 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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; b0 D, h: [: dConstruction 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。9 I5 K1 ^% y& m0 O( Z5 ]- A
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* u( N7 o4 S ]( i7 [; {$ b$ f! A% pTVBNOW 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。; }% N: H+ Q6 @6 ^( c4 Z
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