本帖最後由 lilitan008 於 2011-10-3 12:57 PM 編輯 公仔箱論壇; B$ `" [; S' e% B, _( K4 }
6 s- m* q/ R2 n3 _& yTVBNOW 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。If you are not a Physics person, read on and learn a fact of physics.
, [1 j: g! v0 P# H8 v0 b公仔箱論壇AMAZING!
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Even after you see it, it is still hard to believe!
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5 h0 \2 N3 A, \! }Magdeburg Water Bridge in Germany What a feat! Six years, 500 million euros, 918 meters long. Now this is engineering! / L' e+ t% a/ r+ j9 G; i3 \
This is a channel-bridge over the River Elbe and joins the former East and West Germany as part of the unification project. $ B" V- F& @9 W; D- H/ B
It is located in the city of Magdeburg, near Berlin.tvb now,tvbnow,bttvb8 o9 H8 v( f7 |8 e# U, L3 r
4 l+ H$ D+ ^& W+ }3 e5 I' ]5.39.217.76The photo was taken on the day of inauguration.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。5 K8 ^0 T }, X+ Q: y4 v" k
To those who appreciate engineering projects, here's a puzzle for you armchair engineers and physicists.
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( T: m" Z9 H0 m. X! @6 i! _. M5 hTVBNOW 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。Question:
7 _: t8 S! h* u8 n9 }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。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。7 F" U2 @% B( L9 S7 Z* t
Did that bridge have to be designed to withstand the additional weight of ship and barge traffic,4 Z. t4 p6 ^7 _; `) m9 u0 d
Or just the weight of the water? 5.39.217.76# R7 ~6 ~. y) u1 y5 D
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。' d$ S$ j# U# }) I* ]
Answer:
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: s5 Y8 U- m8 X公仔箱論壇It only needs to be designed to withstand the weight of the water!
# d7 u( s/ s ?4 N, ?- qWhy? 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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The Incredible Magdeburg Water Bridge in Germany
* Y+ v- S6 @% h5.39.217.76The 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.
" C3 B0 V% k! }. p/ P公仔箱論壇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. tvb now,tvbnow,bttvb" k: w, y! I G5 `
# ~1 g) S. r o) }% ^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. 1 x. |& V1 f3 Y; q' p3 E1 L# r
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