本帖最後由 lilitan008 於 2011-10-3 12:57 PM 編輯
, X4 |) i1 _+ g. LTVBNOW 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。
' y! _- l o) L7 h* y6 o$ i+ @公仔箱論壇If you are not a Physics person, read on and learn a fact of physics. , E- l, O7 n+ K; m0 u. P
AMAZING! 5.39.217.76- `+ i& t3 C4 P. M' q) G% X
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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! . y, l2 B6 |. r' W- Y n* q
This is a channel-bridge over the River Elbe and joins the former East and West Germany as part of the unification project. 公仔箱論壇, I+ ?/ f2 b4 m M2 \
It is located in the city of Magdeburg, near Berlin.
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5 ]- Q5 X* C: x1 M- Z2 U9 TThe photo was taken on the day of inauguration.
% c3 ^7 a) Q8 {2 _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。To those who appreciate engineering projects, here's a puzzle for you armchair engineers and physicists.
2 E7 T6 S2 |0 c7 gTVBNOW 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。
* \1 w5 g, U' WQuestion:
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Did that bridge have to be designed to withstand the additional weight of ship and barge traffic,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。; K' a3 m7 k8 P3 S H
Or just the weight of the water?
( A! U6 v) j7 z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。* S P( `! y$ F% V& N6 B$ R+ n
Answer: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。6 x1 L, k/ N3 l- e
: M0 H5 A5 H! ^3 a公仔箱論壇It only needs to be designed to withstand 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。% v% r7 i" X! T6 J5 \. U% o. Y2 Q3 f0 o
Why? 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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& R0 U- I0 l0 U8 R9 K$ ^! v7 rTVBNOW 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。
/ v e* O$ U' ` r6 v5.39.217.76The Incredible Magdeburg Water Bridge in Germany. W/ x6 }% t7 B. m( D: q0 `. U0 b$ v
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.
y) m* H& a$ q4 ?5.39.217.76The 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4 O* o$ _6 i/ s, @4 k5 q, ~; @" w7 f
! P. p( Z) Q" eConstruction 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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