本帖最後由 lilitan008 於 2011-10-3 12:57 PM 編輯
9 y) f6 m4 \9 g* 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。7 k& J7 l& f. z# ~* j
If you are not a Physics person, read on and learn a fact of physics.
0 [% A4 y0 ]$ Z' d! D% Etvb now,tvbnow,bttvbAMAZING!
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Even after you see it, it is still hard to believe!9 ]3 D+ }- \' i! u8 g& p6 U# t& u
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/ I7 {0 e' [4 k, V! h5.39.217.76Magdeburg Water Bridge in Germany What a feat! Six years, 500 million euros, 918 meters long. Now this is engineering!
2 D9 W: b3 O1 G0 t5.39.217.76This is a channel-bridge over the River Elbe and joins the former East and West Germany as part of the unification project.
/ S1 i* E. L1 ]) p! c; k, e G公仔箱論壇It is located in the city of Magdeburg, near Berlin.5.39.217.76$ @/ i9 O) |2 I: M
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The photo was taken on the day of inauguration.
* R8 g2 W& X1 _# Q) o$ VTVBNOW 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.6 u' H5 t o& k/ P% A
+ J. M5 N: S9 d- J9 wtvb now,tvbnow,bttvbQuestion:
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9 ]* P9 `/ j0 ~( @0 X0 ?tvb now,tvbnow,bttvbDid that bridge have to be designed to withstand the additional weight of ship and barge traffic,
4 J0 `& }9 a" s# O, ]! Qtvb now,tvbnow,bttvbOr just 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。7 B9 ^4 `) q d+ H
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。/ z2 E! p8 U2 G
Answer:
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# f# \3 ]3 ]% S5 r2 J6 ]! @公仔箱論壇It only needs to be designed to withstand the weight of the water!
+ X2 S5 i" f- \- y8 RWhy? A ship always displaces an amount of water that weighs the same as the ship, regardless of how heavily a ship may be loaded公仔箱論壇$ `/ H+ `& {2 k
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The Incredible Magdeburg Water Bridge in Germany公仔箱論壇# T8 P1 \+ L5 {& G. i
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.
7 B2 m- c. o. LThe 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. 公仔箱論壇- r" [& \5 y' z, R! K7 c0 ~
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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.
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; n# x4 f' a" K+ Q公仔箱論壇5.39.217.767 r3 u5 q. W* z# U* ~& M Q" Z
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