本帖最後由 lilitan008 於 2011-10-3 12:57 PM 編輯 公仔箱論壇! p7 ], V7 f' E0 K: y
; Q! b4 I4 G7 \. 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。If you are not a Physics person, read on and learn a fact of physics. 5 D6 x/ ^: Z# t, h6 M; Z
AMAZING!
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Even after you see it, it is still hard to believe!
; F. M7 a9 i5 w: S6 O3 r1 O( w. ?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。" |) p) h( a0 H; Z: Z
( d2 E" q8 K, 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。Magdeburg Water Bridge in Germany What a feat! Six years, 500 million euros, 918 meters long. Now this is engineering! 4 P2 l3 f. `5 @! \2 i+ B8 f
This is a channel-bridge over the River Elbe and joins the former East and West Germany as part of the unification project.
, b( f/ G; i* ?5 ^4 zIt is located in the city of Magdeburg, near Berlin.
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8 o4 K" V9 F; x3 b5.39.217.76The photo was taken on the day of inauguration.
) k/ g; @1 X& ?; i1 { 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。To those who appreciate engineering projects, here's a puzzle for you armchair engineers and physicists.5.39.217.76/ b! h0 i) r, f# {. x
. I" P5 q+ n8 o# J9 _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。Question:
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# r! o, u* [ y: ~- i; y5.39.217.76Did that bridge have to be designed to withstand the additional weight of ship and barge traffic,
; H& S) K, ?5 D, L7 ^9 B! J5.39.217.76Or just 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。2 s" [ M1 ^ t3 B# }
0 X( i9 D' ^3 \/ [3 s" Y+ |+ mAnswer:
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It only needs to be designed to withstand the weight of the water!
+ B* O4 a- n& Z# V. mTVBNOW 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。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
" u1 x) G J7 k: ~7 C# n0 `+ ~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。+ G) J7 s% `: B# E. g E- \0 ]
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The Incredible Magdeburg Water Bridge in Germany公仔箱論壇6 O6 f- Y: b t2 z
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.
& Q4 G# {5 | D7 O" c& m& hThe 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 S' C6 t5 e% [' ~' {
4 I4 ]/ e3 ^1 JTVBNOW 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.
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8 H, }9 `6 a6 l4 T2 b1 B( nTVBNOW 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。
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