本帖最後由 lilitan008 於 2011-10-3 12:57 PM 編輯 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! k% P9 C
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。% D% p* N! i; J2 g( A! A( b
If you are not a Physics person, read on and learn a fact of physics.
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Even after you see it, it is still hard to believe!
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Magdeburg Water Bridge in Germany What a feat! Six years, 500 million euros, 918 meters long. Now this is engineering! . m: I4 A6 o2 h3 O4 Q
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0 d. n2 }) I/ y, ?( h
It is located in the city of Magdeburg, near Berlin.5.39.217.76- M- w8 r! ^; n8 B
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The photo was taken on the day of inauguration.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。* l0 Z0 L3 l) o- N" P" ]
To those who appreciate engineering projects, here's a puzzle for you armchair engineers and physicists.9 H+ P2 L: {* w+ `. D' a
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Question:5.39.217.76- [. W6 g7 ?4 L% x+ y
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Did that bridge have to be designed to withstand the additional weight of ship and barge traffic,
2 f1 K" P2 O+ e+ \$ f8 j+ `4 cTVBNOW 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。Or just the weight of the water? tvb now,tvbnow,bttvb' Y W6 F, D [1 I% V% N
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Answer:
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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。5 p1 s3 F5 K, b
Why? A ship always displaces an amount of water that weighs the same as the ship, regardless of how heavily a ship may be loaded0 k! Q0 g9 W: j
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 |- Z! o4 d+ E& z
% \* f+ V& P9 C E$ N# U; d公仔箱論壇The Incredible Magdeburg Water Bridge in Germany
. E' e' J+ j: a, t+ |) c- s- Z- Y, Z公仔箱論壇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.
4 l1 Z; ?2 s# j* h$ a( qTVBNOW 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.
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- Y! I8 s3 F) a5 E! K3 @: p6 W( i# i公仔箱論壇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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! a" V, |) ], tTVBNOW 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 n. m1 B& k5 Q6 u) jTVBNOW 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,bttvb7 J' X# G- r& E! ^
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