本帖最後由 lilitan008 於 2011-10-3 12:57 PM 編輯 5.39.217.77:88985 g l/ g( h5 x# b# }! Y
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If you are not a Physics person, read on and learn a fact of physics. tvb now,tvbnow,bttvb9 f8 x, ?3 _$ x' Y) U% L1 X. p
AMAZING! 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。2 y3 y9 u7 z- R1 k3 O
+ g2 p- V' f+ ^" j- E, }$ ZEven after you see it, it is still hard to believe!tvb now,tvbnow,bttvb8 Z. _" M) W+ ]" Z" a. I5 a) G
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# Z& w7 k5 d6 m9 STVBNOW 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。Magdeburg Water Bridge in Germany What a feat! Six years, 500 million euros, 918 meters long. Now this is engineering!
- g7 R& Y+ ^) O, ktvb now,tvbnow,bttvbThis is a channel-bridge over the River Elbe and joins the former East and West Germany as part of the unification project. 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。) U; b! ^5 } X+ g5 H8 p3 }! r
It is located in the city of Magdeburg, near Berlin.
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The photo was taken on the day of inauguration.
% |( p7 ^. C- c# B7 i% j* I, g2 {5.39.217.77:8898To those who appreciate engineering projects, here's a puzzle for you armchair engineers and physicists.5.39.217.77:8898( L0 l2 W, }9 ~2 I( n C' ?
& m3 Q- ^) U2 y D6 GQuestion: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。6 b! E1 K) F/ A8 K9 ]3 {5 t7 X
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Did that bridge have to be designed to withstand the additional weight of ship and barge traffic,
, R+ i4 b2 \6 P5 m/ g$ h- ~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。Or just the weight of the water?
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& q* u+ g. l" Y8 p公仔箱論壇Answer:公仔箱論壇& ?( ^4 Q9 x' r! j- O- y2 G8 h
( v" I+ s: h! y& 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。It only needs to be designed to withstand the weight of the water!
0 Z- Q5 T! P; Q. A' m6 iWhy? 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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E; Z6 x6 K% o+ h& k7 ]5.39.217.77:8898The Incredible Magdeburg Water Bridge in Germanytvb now,tvbnow,bttvb' r0 V7 X6 r5 E7 e. w" k& G" q
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.tvb now,tvbnow,bttvb$ [+ r( f3 j6 A, _% S
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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6 I9 E- g! f4 s4 F* o3 y* u5.39.217.77:8898Construction 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.
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