本帖最後由 lilitan008 於 2011-10-3 12:57 PM 編輯
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8 m/ u9 S$ Q4 W* e5.39.217.76If you are not a Physics person, read on and learn a fact of physics.
1 T. i+ O4 G) Q# j: z* R0 `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。AMAZING! 公仔箱論壇# U) {1 h# j# X( z2 g/ n6 c. [0 \
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/ Y7 d7 ]: `* N" K
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。; a9 T8 \! C1 l1 R, m3 f! w% ] n
Magdeburg Water Bridge in Germany What a feat! Six years, 500 million euros, 918 meters long. Now this is engineering!
. J$ ~$ ?1 D! H* ?This is a channel-bridge over the River Elbe and joins the former East and West Germany as part of the unification project.
, \+ L+ L, q! g3 v& [" m; CIt is located in the city of Magdeburg, near Berlin.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。8 B; a! R( I* w+ I' e
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The photo was taken on the day of inauguration.
9 T% ]) R8 o+ k8 j& V% N7 o B: ^/ 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。To those who appreciate engineering projects, here's a puzzle for you armchair engineers and physicists.5.39.217.76/ z* S8 |6 @% s/ c, H
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Question:5.39.217.76$ ]8 [) Y- j/ e5 [
% B, I% `: } O- v8 ptvb now,tvbnow,bttvbDid that bridge have to be designed to withstand the additional weight of ship and barge traffic,
% L& Y+ i) \' p5.39.217.76Or just the weight of the water?
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6 c( [$ k |) {% _7 T公仔箱論壇Answer:
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* e+ a7 M3 \6 n9 f/ Q6 G9 q5.39.217.76It only needs to be designed to withstand the weight of the water!
# M$ V x; U7 A( b; hWhy? 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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* a2 Z" V$ z) H- ]4 UThe 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。/ b: O/ q1 _/ S7 q2 [: q
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.
+ a$ M% S" ^! R+ ]0 n5 O% I& |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。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. . ?7 _1 b0 P4 S2 [6 ^8 W
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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. 5.39.217.76! o6 u1 v% q6 ^6 b4 D. N8 e8 U2 T
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7 t# t. b0 ~+ F: O! ~ }+ O" V5.39.217.76TVBNOW 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。 U' S! z. h" p/ X% z: b) z7 k: I$ [
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- r0 j4 b2 X1 ~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。. |# y9 B. A4 q8 c4 B& E# d
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