本帖最後由 lilitan008 於 2011-10-3 12:57 PM 編輯 tvb now,tvbnow,bttvb, b8 y5 K2 C7 n ^& s" [1 j
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If you are not a Physics person, read on and learn a fact of physics.
& a, y% [3 |$ B+ k) 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。AMAZING! tvb now,tvbnow,bttvb: P; R' p' m- f% S
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Even after you see it, it is still hard to believe!
5 {' `4 x7 y% \1 u' ~ c5.39.217.77公仔箱論壇: d9 |& `( k* i/ S
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。9 h4 G0 ?) C! k6 t
Magdeburg Water Bridge in Germany What a feat! Six years, 500 million euros, 918 meters long. Now this is engineering!
: D2 P) H5 e9 L: kThis is a channel-bridge over the River Elbe and joins the former East and West Germany as part of the unification project.
( Y. m; G/ U% o4 s. D( @- R5.39.217.77It is located in the city of Magdeburg, near Berlin.
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% Q3 j% n! n9 W公仔箱論壇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。1 A2 f8 O6 F6 n- S& L! h
To those who appreciate engineering projects, here's a puzzle for you armchair engineers and physicists.
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( L% l" p$ q {* \+ itvb now,tvbnow,bttvbQuestion:
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& H* B; J: B6 F P; u5.39.217.77Did that bridge have to be designed to withstand the additional weight of ship and barge traffic,
7 e j+ ^0 Z! J3 ZOr just the weight of the water? A' A! f3 l$ P5 [
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It only needs to be designed to withstand the weight of the water! 公仔箱論壇% T6 w) C1 o; R0 h% B/ A6 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 loaded
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The Incredible Magdeburg Water Bridge in Germany
& k! s8 n0 b. `/ o5.39.217.77The 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 ] ], @( ^( `9 r8 s) g" }( K [7 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. / s$ I& n0 N) W2 r
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 J& E' \1 y. U( M) C
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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1 N5 S% {6 ]7 W2 r$ D5 }! 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。
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