本帖最後由 lilitan008 於 2011-10-3 12:57 PM 編輯
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If you are not a Physics person, read on and learn a fact of physics.
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% p0 N4 k* B) u3 `2 I9 l, ]tvb now,tvbnow,bttvbTVBNOW 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 r; t1 q& _3 x7 x* ^; ]/ N- F
Even after you see it, it is still hard to believe!公仔箱論壇% q* p$ S0 h, f' u* Z+ ^7 b: l
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6 V2 a% o# B8 e9 u8 ?os.tvboxnow.comMagdeburg Water Bridge in Germany What a feat! Six years, 500 million euros, 918 meters long. Now this is engineering! tvb now,tvbnow,bttvb5 J8 g; k; Y9 r6 m. ?
This is a channel-bridge over the River Elbe and joins the former East and West Germany as part of the unification project. os.tvboxnow.com$ l0 L8 c6 ?- o
It is located in the city of Magdeburg, near Berlin.
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) p# Q0 D" U9 B, v7 x+ P" Qos.tvboxnow.comThe photo was taken on the day of inauguration.
( f* K0 ?5 Q9 F" [# j* d. t公仔箱論壇To those who appreciate engineering projects, here's a puzzle for you armchair engineers and physicists.
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Question: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。" k7 ^. P. [2 `: s: ]6 o
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。4 @# P" M" Q8 W' l# C* r% C
Did that bridge have to be designed to withstand the additional weight of ship and barge traffic,1 c" e N5 ?. v0 b. ]# _
Or just the weight of the water?
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' d6 i6 q! ^+ V- H: fAnswer:
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It only needs to be designed to withstand the weight of the water!
- T/ g3 E/ e! ]3 d' O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
7 `* F7 f% M2 B; E: A' I/ aTVBNOW 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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The Incredible Magdeburg Water Bridge in Germany
5 O" @& Q. G: H2 C6 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。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.os.tvboxnow.com0 z! k# s% N9 }4 N- @3 `
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. 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 u- C5 |% J2 ]& F" z3 K: \* `
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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. 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。9 ~! d. a8 v, R1 b! }
& `+ J0 Q9 k4 i0 q3 x公仔箱論壇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。0 E; [( p7 o6 K% C" k
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