本帖最後由 lilitan008 於 2011-10-3 12:57 PM 編輯 : |% {( Y' Z. r& Y
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If you are not a Physics person, read on and learn a fact of physics.
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0 k, J: {* l7 n! 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。5.39.217.76' I# [9 A& H6 h, {5 J# a+ k
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! tvb now,tvbnow,bttvb: ]7 O0 D5 Y ^5 b) K
This is a channel-bridge over the River Elbe and joins the former East and West Germany as part of the unification project. 5.39.217.76, b/ l# w8 x; p! A
It is located in the city of Magdeburg, near Berlin.
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The photo was taken on the day of inauguration.tvb now,tvbnow,bttvb* r0 s9 s% f g0 E( P
To those who appreciate engineering projects, here's a puzzle for you armchair engineers and physicists.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 K. _3 p g ]' C, s$ \
6 e7 c I* K/ R* zQuestion:
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Did that bridge have to be designed to withstand the additional weight of ship and barge traffic,
! \ I, R: d1 n0 ctvb now,tvbnow,bttvbOr just the weight of the water? + s9 G" V3 O! W2 D1 \& m! U% z
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Answer:
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It only needs to be designed to withstand the weight of the water!
& }- H& G# d! mWhy? A ship always displaces an amount of water that weighs the same as the ship, regardless of how heavily a ship may be loadedtvb now,tvbnow,bttvb' ]# O& O5 H, W1 r- ]* F0 [1 z* B
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, q+ V* h I E4 }: m7 K- f公仔箱論壇The Incredible Magdeburg Water Bridge in Germany
# y1 d3 q& M2 D# i/ E4 N- mtvb now,tvbnow,bttvbThe 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.. C8 n! K x8 `; T7 o: o/ q
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. / C) e0 v1 r$ Z! ^# W
# ^! s! {1 ]% g- i8 \9 ETVBNOW 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。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.
- `! Y5 J3 ]4 G" 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。' [+ M/ n( R8 l& ~3 w$ U
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