本帖最後由 lilitan008 於 2011-10-3 12:57 PM 編輯 公仔箱論壇! z0 N; x0 e* n' u) H
, h- h9 I1 _& K! ^% |6 v' [; wIf you are not a Physics person, read on and learn a fact of physics.
- {" i; g3 v Ztvb now,tvbnow,bttvbAMAZING!
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. y/ d; }2 |, N& @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! : Z j1 u9 [1 @3 x9 m M
This 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。$ {2 V- S p8 ^
It is located in the city of Magdeburg, near Berlin.tvb now,tvbnow,bttvb* F+ {8 k% C5 c5 ?( l2 n
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。/ H! d* j' t& J$ _" |# \- T, L
The photo was taken on the day of inauguration.4 i) U; i: g8 Y3 B V* y+ y- T) C
To those who appreciate engineering projects, here's a puzzle for you armchair engineers and physicists.
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Question:
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3 ]- b) K. ^( Q; T2 g. sDid that bridge have to be designed to withstand the additional weight of ship and barge traffic,5.39.217.77:8898% l: [! V- L, l' N
Or just the weight of the water? % n& `! L/ L9 n0 n: b
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Answer:tvb now,tvbnow,bttvb3 x; a( v; h ~
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It only needs to be designed to withstand the weight of the water!
+ l% z% E4 q1 E& ^7 g6 vTVBNOW 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。Why? 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,bttvb8 p; S* r0 ]' u
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* q Z5 O) u* n6 W. 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。The Incredible Magdeburg Water Bridge in Germany3 x' Y2 S3 D+ G( ^1 }1 V
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.% `& z' z U% p0 z0 V/ e o
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. 4 o2 X! w2 O. x& M* H
( I" I2 r0 B) c0 Z$ c$ }tvb now,tvbnow,bttvbConstruction 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4 j3 f. w/ w" ~: G$ B
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5.39.217.77:8898' B* ~$ U" j+ E; H4 B& o- _6 o$ o
4 ]* y8 a" u4 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。tvb now,tvbnow,bttvb" i, e# S. K1 t8 }
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發表於 2011-10-15 09:35 PM
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