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. tvb now,tvbnow,bttvb. Y8 ~ a1 K& ?6 U& y `
AMAZING! 2 F) H) r, L$ `: n8 M8 I' c
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Even after you see it, it is still hard to believe!
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+ {7 [% v1 l' T: oMagdeburg Water Bridge in Germany What a feat! Six years, 500 million euros, 918 meters long. Now this is engineering!
' f b ?: \# l3 P" p0 D& @tvb now,tvbnow,bttvbThis is a channel-bridge over the River Elbe and joins the former East and West Germany as part of the unification project.
. N1 {: P- L# M- H4 eos.tvboxnow.comIt is located in the city of Magdeburg, near Berlin.
" p$ a" r; C$ Q' `) [1 ^# 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。
8 m" M' y R8 S# y5 Y% x6 q" 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 photo was taken on the day of inauguration.
" b, D2 P8 v+ T- {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。7 B8 K9 I4 [$ Y P5 }( C& x
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Did that bridge have to be designed to withstand the additional weight of ship and barge traffic,
5 b0 G5 B, O; u0 Z* ^公仔箱論壇Or just the weight of the water?
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7 E! K* H1 w' v6 etvb now,tvbnow,bttvbAnswer:tvb now,tvbnow,bttvb6 p7 w" I4 N3 t5 c+ D9 i# ~8 v
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It only needs to be designed to withstand the weight of the water! 公仔箱論壇& F0 M3 D* F' v; F# U: _. k4 p
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; H$ f$ ]8 c g
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The Incredible Magdeburg Water Bridge in Germany
# P% ~5 u4 c6 P! v2 btvb 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.公仔箱論壇& J0 }6 X4 `) F x* a }
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. 4 x3 R3 `* K0 j
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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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tvb now,tvbnow,bttvb4 u2 I/ f, u& b8 i$ M+ g4 Q. c
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。# }8 a2 `/ N, j: A2 n. }/ T9 P1 n# o/ c6 q8 \
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5 P0 Q5 Y: T! s% 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。公仔箱論壇6 J( K7 j+ j( s6 i/ ?
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