本帖最後由 lilitan008 於 2011-10-3 12:57 PM 編輯 tvb now,tvbnow,bttvb5 k7 P1 y- s4 X$ P
* f( ^. u, I. ?* f公仔箱論壇If you are not a Physics person, read on and learn a fact of physics. 3 N$ \0 {% y& X: O7 N
AMAZING! tvb now,tvbnow,bttvb' u% C1 h' u% W- C O
. l5 ~/ V+ W( [% H+ m1 xtvb now,tvbnow,bttvbEven after you see it, it is still hard to believe!5.39.217.766 |0 H& c5 L. t/ l4 V1 V
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7 g8 d) x) @: O2 |4 A* ^Magdeburg Water Bridge in Germany What a feat! Six years, 500 million euros, 918 meters long. Now this is engineering!
" y' u, I" J8 i+ g5.39.217.76This 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,bttvb' [. {" ?/ O- D* K) c1 ?% _% _0 P
It is located in the city of Magdeburg, near Berlin.: x1 q, x& ~1 x/ w3 h4 F5 V
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The photo was taken on the day of inauguration.tvb now,tvbnow,bttvb, Y/ {8 `( }- A4 I1 V: _
To those who appreciate engineering projects, here's a puzzle for you armchair engineers and physicists., d. E6 J/ Z. U5 [
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Question:! Z/ V! d, R% Y: B9 P$ {
& O- L5 O* A3 `+ O stvb now,tvbnow,bttvbDid that bridge have to be designed to withstand the additional weight of ship and barge traffic,
/ b! P* `/ Y" c/ A; P+ k/ P公仔箱論壇Or just the weight of the water? 5 p$ p6 E' A- |- A8 i8 X
9 G9 k' p$ E% g% r& `! uAnswer:
' N( p5 R9 ~! ~: S* s2 ]1 B/ W4 QTVBNOW 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$ {* A! m n; R" a* s5 C
It only needs to be designed to withstand the weight of the water! 5.39.217.76$ b% n5 ~2 d5 P- ~0 j
Why? A ship always displaces an amount of water that weighs the same as the ship, regardless of how heavily a ship may be loaded5 T' \9 v5 o! M7 ]0 p+ ^, K
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, {" P c! q+ W9 ?5 V0 j5.39.217.76The Incredible Magdeburg Water Bridge in Germany
0 K! ]( ~- ]- z) U; w0 MTVBNOW 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.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。0 v: ?" m1 G9 J4 s" s" T$ Z1 h2 X; ^
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. 9 S; |' C% B2 {& ^3 {
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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。; n9 G' v* \' a: L6 ^
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