本帖最後由 lilitan008 於 2011-10-3 12:57 PM 編輯 www2.tvboxnow.com3 s. |+ t* S$ G$ r% R" w/ ~
. U" W) U5 h7 b8 h! V3 ~( \4 U. yTVBNOW 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。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!; v. g& T3 D* b7 c
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9 b/ x' F7 _! x9 W0 l- \9 U4 h, T+ MMagdeburg Water Bridge in Germany What a feat! Six years, 500 million euros, 918 meters long. Now this is engineering! tvb now,tvbnow,bttvb/ c- c. q- k' J* d5 Y5 c
This is a channel-bridge over the River Elbe and joins the former East and West Germany as part of the unification project. www2.tvboxnow.com7 X! @* \# t* ?( i
It is located in the city of Magdeburg, near Berlin.
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The photo was taken on the day of inauguration.www2.tvboxnow.com5 ^( b/ Z$ N+ H+ z7 g- t* `. p" v7 C
To those who appreciate engineering projects, here's a puzzle for you armchair engineers and physicists.
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( W& g/ P9 X0 [" X1 ]" vtvb now,tvbnow,bttvbQuestion:
7 T2 l) z8 l- z# o: K5 kTVBNOW 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。
% w# J4 l( Q: Z1 z- a5 K9 x; ?: Q- uDid that bridge have to be designed to withstand the additional weight of ship and barge traffic,
8 A9 `! v# G- q4 A/ 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。Or just the weight of the water? tvb now,tvbnow,bttvb6 b# U( B6 M- A! J, r
5 b- e( I) Q- `% L6 QAnswer:
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% S2 m. h3 }6 f1 }$ p3 cIt only needs to be designed to withstand the weight of the water!
4 ` D5 \0 u7 V4 @; M& X. s iwww2.tvboxnow.comWhy? 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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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。 T% B8 N( X1 {( i, q; \
The Incredible Magdeburg Water Bridge in Germanywww2.tvboxnow.com* b0 |4 S! d0 Y3 n9 o% O
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.
/ F3 p+ T+ U9 R* G' `tvb now,tvbnow,bttvbThe 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. ; e u; C+ |# Y8 X4 T2 ^8 a. P8 I
) D: w5 c. [: w3 R7 K) b9 xTVBNOW 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。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. 8 }6 ^ J% ]7 ?: Y e# W7 _- k" m
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