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。3 U" _+ s3 q& y S& H# ]
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If you are not a Physics person, read on and learn a fact of physics.
, W! w) B! ~% ~7 O; Z: XAMAZING!
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1 E" l. r1 l2 {& P2 S: ?% qEven after you see it, it is still hard to believe!
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; d0 `. w5 ], b" u7 e, o公仔箱論壇
# D- d$ w1 B9 e) J' F3 b8 iTVBNOW 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。Magdeburg Water Bridge in Germany What a feat! Six years, 500 million euros, 918 meters long. Now this is engineering!
) B- a- y. V* a8 Y' `8 J) |, O" F5.39.217.76This is a channel-bridge over the River Elbe and joins the former East and West Germany as part of the unification project. 5.39.217.763 q3 v7 y# d3 z# m% c4 j* s' E
It is located in the city of Magdeburg, near Berlin.7 X2 I, ?' X7 S5 f
. K. I0 s9 D! H- e) |公仔箱論壇The photo was taken on the day of inauguration.5.39.217.762 }2 `. b0 r" y' s% Q# y3 T5 Q
To those who appreciate engineering projects, here's a puzzle for you armchair engineers and physicists.tvb now,tvbnow,bttvb: h- M1 e# C/ s* |4 a+ o7 K
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Question:5.39.217.76/ ^ ?6 o8 O3 A+ W
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Did that bridge have to be designed to withstand the additional weight of ship and barge traffic,
5 ~6 {1 j8 a" w/ Z& }% @公仔箱論壇Or just the weight of the water?
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4 u0 ]; H4 H+ b% @" u$ eAnswer:
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It only needs to be designed to withstand the weight of the water! 5.39.217.76* t, a+ K# g2 |) E. U
Why? A ship always displaces an amount of water that weighs the same as the ship, regardless of how heavily a ship may be loaded9 _+ P' _( g8 h4 q+ Y
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The Incredible Magdeburg Water Bridge in Germany
" s$ I9 @" h; I# h( S9 ttvb now,tvbnow,bttvbThe 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.0 J3 _% X4 @! e5 k2 e3 g+ @
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. ; i) g6 U0 k! M8 T, t% ^
; ^: C3 e5 V9 t7 o' b2 |; i; \5.39.217.76Construction 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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: E# Y9 {7 Y9 {9 _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& `/ \$ K. z: Z; s% s* b
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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。+ |. n* W; Z9 _) I5 _
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