本帖最後由 lilitan008 於 2011-10-3 12:57 PM 編輯
0 j& J6 x* e1 u* \9 NTVBNOW 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。
" S& R7 H9 M6 b' E9 }0 _, bIf you are not a Physics person, read on and learn a fact of physics. tvb now,tvbnow,bttvb1 ~$ V& D/ e" z: c" X) f' W& I
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。6 e. K1 d4 t* @2 Q: @0 p
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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!
4 z6 T% U* m* G, z/ KThis is a channel-bridge over the River Elbe and joins the former East and West Germany as part of the unification project.
+ c6 M% Q0 C8 e! C+ 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。It is located in the city of Magdeburg, near Berlin.
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: K5 ^ L* ~4 _tvb now,tvbnow,bttvbThe photo was taken on the day of inauguration.
, Z" p( p; B/ _' W: ytvb now,tvbnow,bttvbTo those who appreciate engineering projects, here's a puzzle for you armchair engineers and physicists.+ n% k2 U/ B' |; n: c) Q, a
1 m2 C/ ~7 B, ]* |# L( G7 @ O0 x5.39.217.76Question:
3 ^* M1 c Y" e2 T/ E, K2 W5.39.217.76TVBNOW 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。. ^, L: ]9 `7 [7 e, Z
Did that bridge have to be designed to withstand the additional weight of ship and barge traffic,
/ U6 L' k( h0 U! B( M3 Z. ]1 B5 VOr just the weight of the water?
( K4 o: y# G, t. g bTVBNOW 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。$ b* M9 W2 B2 g# o
Answer:2 G) _& m: A G M$ c0 V
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It only needs to be designed to withstand the weight of the water! 5.39.217.760 X4 K4 |: z! j" j) }
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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The Incredible Magdeburg Water Bridge in GermanyTVBNOW 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 {& f) \8 F( V) D1 D* C
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.
4 W( t' @% V6 R* F$ d" o4 V9 |7 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.
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; U7 q7 ~0 |' X2 a. s1 l5.39.217.76Construction 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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6 Z; T6 r/ P8 d8 R2 NTVBNOW 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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5 n4 j0 Z+ K9 H9 t: 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。 Z# C% }4 k* T( P4 }% L J
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