本帖最後由 lilitan008 於 2011-10-3 12:57 PM 編輯 $ }5 W" l5 k* S3 S5 `0 g
2 S% H- m, I* A: e' b- |5.39.217.76If you are not a Physics person, read on and learn a fact of physics. 5.39.217.76$ p% N; X: c, X4 g0 @5 q
AMAZING!
1 w2 t. e5 Z+ g. |1 ]7 _1 l6 c5.39.217.76TVBNOW 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。/ e+ {1 l1 Y' p: m
Even after you see it, it is still hard to believe!tvb now,tvbnow,bttvb. K# }! a. o, I; j
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8 E9 s2 B* e5 N4 t5.39.217.76Magdeburg Water Bridge in Germany What a feat! Six years, 500 million euros, 918 meters long. Now this is engineering! 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。, _, q/ w* }" f
This is a channel-bridge over the River Elbe and joins the former East and West Germany as part of the unification project. tvb now,tvbnow,bttvb7 B6 r. g/ D) A% v; @
It is located in the city of Magdeburg, near Berlin.
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The photo was taken on the day of inauguration.
! Q3 M: Q/ ]& B7 e& {To those who appreciate engineering projects, here's a puzzle for you armchair engineers and physicists.
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" u: s" ~& ^ G* R5 @tvb now,tvbnow,bttvbQuestion:
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; N: X9 B3 `3 E* e6 _' N9 B& pTVBNOW 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。Did that bridge have to be designed to withstand the additional weight of ship and barge traffic,
; v& Q k$ r; |$ f, M& ]2 SOr just the weight of the water? 5.39.217.76; I+ |, ~3 z6 l/ O% _' w- ]$ R4 T
: T5 \) G$ i+ `8 |- }3 s公仔箱論壇Answer:
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. }/ r4 d5 c) |! R$ g0 GTVBNOW 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! 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。+ \" l6 e n3 }; X; I+ Z. T: t
Why? A ship always displaces an amount of water that weighs the same as the ship, regardless of how heavily a ship may be loadedTVBNOW 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。, e; H3 S9 `* a
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# }4 I% X% K5 f6 Dtvb now,tvbnow,bttvbThe Incredible Magdeburg Water Bridge in Germanytvb now,tvbnow,bttvb" e' F4 E3 [ L1 J6 L# v$ O* a
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.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。* h3 _0 ?- E- B
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. 公仔箱論壇2 Z/ n0 S' P/ y' Z' N4 |# i. E
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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.
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+ x3 k& y9 E1 d# B9 ?- m. e公仔箱論壇
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