本帖最後由 lilitan008 於 2011-10-3 12:57 PM 編輯
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If you are not a Physics person, read on and learn a fact of physics.
# X; v- \, l1 ~! k4 I! o6 Vtvb now,tvbnow,bttvbAMAZING!
* Q7 h }; A' ]5 uTVBNOW 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。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。. h- C. L! r+ c
Even after you see it, it is still hard to believe!, f* d6 @3 V0 x* c. B1 H
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Magdeburg Water Bridge in Germany What a feat! Six years, 500 million euros, 918 meters long. Now this is engineering! ) n% g' e8 M/ G
This is a channel-bridge over the River Elbe and joins the former East and West Germany as part of the unification project. 5.39.217.77:88985 u) g, x$ R: D
It is located in the city of Magdeburg, near Berlin.公仔箱論壇* a. P4 h8 E) \5 t
; A& ^& u8 `! T. A5.39.217.77:8898The photo was taken on the day of inauguration.
+ R: {" E& |+ G) n, X" x- F$ q! A& 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。To those who appreciate engineering projects, here's a puzzle for you armchair engineers and physicists.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。0 {6 R c* P7 `0 o. B+ w
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Question:
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Did that bridge have to be designed to withstand the additional weight of ship and barge traffic,tvb now,tvbnow,bttvb7 y7 T5 o$ K0 m
Or just the weight of the water?
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Answer:tvb now,tvbnow,bttvb& ~. y9 n% ?: p, x6 N2 N$ r
, }% _4 t2 n& @4 r1 y% nIt only needs to be designed to withstand the weight of the water!
. ^: \9 B9 R# e( B6 U$ XWhy? A ship always displaces an amount of water that weighs the same as the ship, regardless of how heavily a ship may be loaded: j6 v) z: r, L& ~8 ?$ j
. {9 Q# O! l( r- D# U) F. 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。
4 ]) o) u# `$ H2 `0 a. R: u5.39.217.77:8898The Incredible Magdeburg Water Bridge in Germany
6 {$ Y6 V# w4 |8 d, \$ Dtvb 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.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。+ v0 w3 V8 i( \( X
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. # {9 C) j9 B$ W B
2 l7 M4 ]' ]7 g7 @" o4 v+ H# f$ ]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. 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% T6 p/ x* u! c h
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9 U) U* m/ R5 r$ f2 S6 s @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。0 u# h7 L8 @* K) a
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