本帖最後由 lilitan008 於 2011-10-3 12:57 PM 編輯 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。 F/ w6 s- \8 p1 S( `. m
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If you are not a Physics person, read on and learn a fact of physics. & W" ^+ W9 a! U$ x2 b5 }
AMAZING! www3.tvboxnow.com/ K: M$ j1 X; W
( s( q3 c' }9 J- p4 M9 e5 e, |& l0 nEven after you see it, it is still hard to believe!5 g7 i* N, v1 S- i N+ }# 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! , Y7 e- y# ?9 d- p& _6 V
This is a channel-bridge over the River Elbe and joins the former East and West Germany as part of the unification project.
+ ?$ c# D! @6 N9 l公仔箱論壇It is located in the city of Magdeburg, near Berlin.
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$ W1 t9 I7 F' J3 \9 l& JThe photo was taken on the day of inauguration.
& ~- g# Z; |* yTo those who appreciate engineering projects, here's a puzzle for you armchair engineers and physicists.www3.tvboxnow.com$ V6 K; P7 w Z7 u/ O
- a) p6 E/ q: H: b& dQuestion:& \( F! a# i, ~" j i
' k) U% k z* `tvb now,tvbnow,bttvbDid that bridge have to be designed to withstand the additional weight of ship and barge traffic,
* l6 M6 r. F2 F& m( QOr just the weight of the water? tvb now,tvbnow,bttvb$ C# H6 m$ v Q6 X" P& d% s
/ i, i) h1 }+ a! GAnswer:. _# T. [ m4 d/ v
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It only needs to be designed to withstand the weight of the water!
) M% a/ Q$ ?+ D" ` |0 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。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 Germany
8 w6 v0 S# v5 f j: N. uThe 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,bttvb! c8 r* r5 a ~. l% f
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2 ]+ }0 \' @7 k& R5 I4 ^
: l8 H4 M; X* C8 L- x4 o0 Nwww3.tvboxnow.comConstruction 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. 0 l+ H+ n- o; ], k% m' t
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+ ^; G3 x3 V* u( b; ]0 ZTVBNOW 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,bttvb9 x/ e; U8 x' Q
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