本帖最後由 lilitan008 於 2011-10-3 12:57 PM 編輯 tvb now,tvbnow,bttvb; @) b5 P( u6 s: F/ J
# e+ F& p& B. g) _; T4 Stvb now,tvbnow,bttvbIf you are not a Physics person, read on and learn a fact of physics. 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 z# v2 |8 G4 f. [
AMAZING!
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Even after you see it, it is still hard to believe!
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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。. @2 _$ F: }$ N$ n% |
Magdeburg Water Bridge in Germany What a feat! Six years, 500 million euros, 918 meters long. Now this is engineering! 2 o: f9 ~; y3 n; C7 t. p# l
This is a channel-bridge over the River Elbe and joins the former East and West Germany as part of the unification project.
. h3 u) U$ `/ C* t, M; {: X; P6 h7 E+ xIt is located in the city of Magdeburg, near Berlin.
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The photo was taken on the day of inauguration.
5 C. i, ^# M' l) D$ c8 J" Y$ H' `To those who appreciate engineering projects, here's a puzzle for you armchair engineers and physicists.
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3 M" q: W0 |! B' ~/ H6 V公仔箱論壇Question:tvb now,tvbnow,bttvb; I1 n: O, ]' ^7 q4 y& r: D; t8 u, j3 O
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Did that bridge have to be designed to withstand the additional weight of ship and barge traffic,/ |% J, s$ n3 g& [
Or just the weight of the water?
+ M# P( F$ Q! e" H+ P& [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。
3 p9 y' ]2 A1 f7 w, MTVBNOW 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。Answer:
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It only needs to be designed to withstand the weight of the water! 5.39.217.764 G4 o' E! X8 Q. M: s
Why? A ship always displaces an amount of water that weighs the same as the ship, regardless of how heavily a ship may be loaded4 z( u8 X r h" e* V
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The Incredible Magdeburg Water Bridge in Germanytvb now,tvbnow,bttvb9 B3 H9 z Q$ |: Y
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。: J( _+ I0 O- O& y: c9 T+ i
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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$ A+ k; ?7 Y- O: p$ A: m7 Mtvb 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. tvb now,tvbnow,bttvb! x% Q ~; `# K
. X1 `) Q- f( v+ j. 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。tvb now,tvbnow,bttvb9 Y4 e2 K& ]6 \7 o! d& n5 }
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發表於 2011-10-2 10:09 PM
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發表於 2011-10-4 11:33 AM
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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。* c' W1 `: ^' b6 K1 p8 O
發表於 2011-10-15 09:35 PM
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