本帖最後由 lilitan008 於 2011-10-3 12:57 PM 編輯
. `/ N$ F! K% |5 E/ r/ \& FTVBNOW 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。5.39.217.768 k& A; G0 A( ^9 a4 A' Q
If you are not a Physics person, read on and learn a fact of physics.
: E- L3 c% Q, O. y+ u, x8 J3 `5.39.217.76AMAZING! 5.39.217.760 Z- O# _* v( G+ ~1 k" U1 h3 y4 j
- a8 ]1 H3 ]! Z5 m3 K3 j$ ~tvb now,tvbnow,bttvbEven after you see it, it is still hard to believe!
+ y' H' v) ~1 `6 z. iTVBNOW 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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+ m! c: |! g' ^" n# I. btvb now,tvbnow,bttvbMagdeburg Water Bridge in Germany What a feat! Six years, 500 million euros, 918 meters long. Now this is engineering! ' ^7 I9 G5 r, M
This is a channel-bridge over the River Elbe and joins the former East and West Germany as part of the unification project. + J6 t( I* F T
It is located in the city of Magdeburg, near Berlin.
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The photo was taken on the day of inauguration.
0 b) ?# v4 y( S8 J# v6 T$ e/ ATo those who appreciate engineering projects, here's a puzzle for you armchair engineers and physicists.
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Question:9 i) E. Q5 V' Q' a p: P/ W
, s! g1 Z/ M0 O: ^: H' \; s7 `Did that bridge have to be designed to withstand the additional weight of ship and barge traffic,' }2 |/ t% P! |, t" P
Or just the weight of the water?
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5 }! u+ O+ X4 F" |- G公仔箱論壇Answer:公仔箱論壇# o/ Z N+ X% c6 P* Q: A
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It only needs to be designed to withstand the weight of the water!
; k' |9 s' Q7 N公仔箱論壇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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) a4 N, y! r7 `5.39.217.76The Incredible Magdeburg Water Bridge in Germanytvb now,tvbnow,bttvb( M, B! u9 ^' F! e+ u X% [' x$ l
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.5.39.217.76/ W' j4 g& e4 U% l
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. / f% \2 D3 }% u- x; Y7 P \
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