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. 4 F4 G" s: h. F n$ |( E+ m( R. ?
AMAZING!
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, v# d! m) w$ L3 V0 U. D$ K3 c9 T% [Even after you see it, it is still hard to believe!tvb now,tvbnow,bttvb1 {9 x' D* s) I4 f" |' S& Z- V0 ~
6 O6 x8 B% X$ e ]( b公仔箱論壇- a- ]+ O" e9 E! z
Magdeburg Water Bridge in Germany What a feat! Six years, 500 million euros, 918 meters long. Now this is engineering! tvb now,tvbnow,bttvb7 Z% V. b* h( B/ k% {) ^: S
This is a channel-bridge over the River Elbe and joins the former East and West Germany as part of the unification project. 公仔箱論壇* f$ q; y4 W. D, u, ~' |/ L! ], v& M
It is located in the city of Magdeburg, near Berlin.
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6 R: v! R$ m5 ]( T, t( }9 PThe photo was taken on the day of inauguration.
8 ]; y" {2 x- OTVBNOW 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。To those who appreciate engineering projects, here's a puzzle for you armchair engineers and physicists.
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& U: S, `& O6 v4 o: T) u8 `* S) A公仔箱論壇Question:
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9 X% V6 c O+ G7 _6 z' h7 nDid that bridge have to be designed to withstand the additional weight of ship and barge traffic,* z' i% i+ A% G: ~# G0 L+ L
Or just the weight of the water? tvb now,tvbnow,bttvb* X9 a' x3 C4 u; a; C) s$ c
6 m3 F" q$ ~0 _! U8 W" j7 J0 ~Answer:
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It only needs to be designed to withstand the weight of the water! , b! @: g# O* z m/ v9 H! K" I
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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) `' k$ |' }% o r D) l公仔箱論壇The Incredible Magdeburg Water Bridge in Germany- t7 {+ y3 S& a9 @+ B. D9 R* Z
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.
+ ^. t, S: U) ^ x7 |7 o5.39.217.76The 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。1 r1 B( H9 L. K+ n( X/ `1 e6 P
2 Y+ F( K9 w, {) x% VConstruction 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. 7 n2 x# X4 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。+ D9 p; r) m3 B* |0 O% n
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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。$ G% u( T& e$ \
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