本帖最後由 lilitan008 於 2011-10-3 12:57 PM 編輯 ! g, N0 E8 I/ q6 h3 x0 ?
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。: S. x: _7 P% @6 i% g( ~2 d; ?4 |0 O* T' _
If you are not a Physics person, read on and learn a fact of physics.
/ r0 M. {# ?! s. fAMAZING!
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Even after you see it, it is still hard to believe!
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Magdeburg Water Bridge in Germany What a feat! Six years, 500 million euros, 918 meters long. Now this is engineering! 公仔箱論壇- [6 ]4 F j* z
This is a channel-bridge over the River Elbe and joins the former East and West Germany as part of the unification project.
9 C4 A" `+ [2 n5 B! S B* Q& btvb now,tvbnow,bttvbIt is located in the city of Magdeburg, near Berlin./ r$ I5 p" h, t$ ?
, M; f! n$ u' e公仔箱論壇The photo was taken on the day of inauguration.
8 {, y7 Y# f @) R0 p0 U5 STo those who appreciate engineering projects, here's a puzzle for you armchair engineers and physicists.
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6 Y+ K X+ ?4 i7 d+ e- _8 Otvb now,tvbnow,bttvbQuestion:
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- _3 t3 A- ^ C0 A+ F. `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。Did that bridge have to be designed to withstand the additional weight of ship and barge traffic,公仔箱論壇8 a9 V# q' V, y/ W
Or just the weight of the water?
Y/ y2 i% M7 z4 `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。
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It only needs to be designed to withstand the weight of the water!
% I: d4 j* l$ h1 {# O! A, PWhy? A ship always displaces an amount of water that weighs the same as the ship, regardless of how heavily a ship may be loaded* ~0 N. U0 a3 u7 q% Q2 H3 o
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The Incredible Magdeburg Water Bridge in Germany公仔箱論壇. X& A5 C/ \- C
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.
. H6 h1 s0 \. 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。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. 2 t: V% H M3 e" o( x6 s D' E
& U) E/ j3 c' S6 A+ ^. @& y公仔箱論壇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. 公仔箱論壇* r7 ^ O4 j. H$ s4 I
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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。& \! T! Z) V/ p) s- X3 a' O
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發表於 2011-10-2 10:09 PM
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