本帖最後由 lilitan008 於 2011-10-3 12:57 PM 編輯
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! p! K N# e b) S nIf you are not a Physics person, read on and learn a fact of physics.
( [! G9 S5 A1 N3 \! y6 DTVBNOW 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! 公仔箱論壇& I( H8 B1 E) I" b
$ {% B% U. q n4 x; _: FTVBNOW 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。Even after you see it, it is still hard to believe!
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Magdeburg Water Bridge in Germany What a feat! Six years, 500 million euros, 918 meters long. Now this is engineering! 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 c* c6 u- [* h1 k% l9 j( H
This is a channel-bridge over the River Elbe and joins the former East and West Germany as part of the unification project.
9 Z* f" Y: O( B) ]公仔箱論壇It is located in the city of Magdeburg, near Berlin.
. |$ Q/ r0 \# f公仔箱論壇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。$ @' ~$ l' ?0 X( v3 n! @! h7 N' b
The photo was taken on the day of inauguration.
" z$ X6 J4 F) Y; O$ O7 B# a" ]公仔箱論壇To those who appreciate engineering projects, here's a puzzle for you armchair engineers and physicists.
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Question:5.39.217.76* E- g( M5 `' Y9 L
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。* j& b4 i9 |% a7 u
Did that bridge have to be designed to withstand the additional weight of ship and barge traffic,
) D. O; Z: S5 R) b' P* atvb now,tvbnow,bttvbOr just the weight of the water?
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! |' O" G8 p& m* ~& R8 zAnswer:
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: _1 A! m3 N( @' y ~: J公仔箱論壇It only needs to be designed to withstand the weight of the water! * S* Q' k& B* W/ z, D
Why? A ship always displaces an amount of water that weighs the same as the ship, regardless of how heavily a ship may be loadedtvb now,tvbnow,bttvb V9 N- ]+ N& g+ x% z
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- p$ ^0 F4 p0 H. ?6 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。The Incredible Magdeburg Water Bridge in Germany
, E# v* E; a& N: b0 I" 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。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.
5 C! }' x9 ~( g' m8 o2 E8 `' ]) Y+ stvb 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.
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; q6 W; Q0 c% w' ]. b( ^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. 5.39.217.76: b" ]- F% i' z- F1 J; ?' L" ^
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tvb now,tvbnow,bttvb" D4 X$ j: O, S& c3 h8 p
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