本帖最後由 lilitan008 於 2011-10-3 12:57 PM 編輯 2 a; ?; B% p8 T0 `
9 r r: `5 Y5 V% N5 M公仔箱論壇If you are not a Physics person, read on and learn a fact of physics.
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Even after you see it, it is still hard to believe!tvb now,tvbnow,bttvb8 e% D+ m$ N: w! t; D
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Magdeburg Water Bridge in Germany What a feat! Six years, 500 million euros, 918 meters long. Now this is engineering!
; ~1 k8 v' v9 v+ W# ^This is a channel-bridge over the River Elbe and joins the former East and West Germany as part of the unification project. 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 x: o0 s0 h& \% m) [7 z
It is located in the city of Magdeburg, near Berlin.
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* H0 F- L* N' a& Ltvb now,tvbnow,bttvbThe photo was taken on the day of inauguration./ H$ }' \8 b% i$ p+ O: L
To those who appreciate engineering projects, here's a puzzle for you armchair engineers and physicists.公仔箱論壇4 A. x$ P& i, }3 p4 b# _
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 t. ~1 L v- u
Question:
0 a' \; i" n3 m9 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。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。) f8 S- {; c! g. {+ T+ n
Did that bridge have to be designed to withstand the additional weight of ship and barge traffic,5.39.217.76" F1 E1 N6 }) a- X' R" \
Or just the weight of the water?
$ W/ O9 Z1 [& P$ 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。
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It only needs to be designed to withstand the weight of the water!
# i) }6 j" _( x9 ~Why? A ship always displaces an amount of water that weighs the same as the ship, regardless of how heavily a ship may be loadedTVBNOW 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。3 z Y; F& T, p5 D: O# j9 x' G
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! P/ G, B/ N+ z( h6 [5.39.217.76The Incredible Magdeburg Water Bridge in Germany
: I; W' s; \7 y4 ntvb 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.
' p# b2 B 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。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. tvb now,tvbnow,bttvb9 {( G& n$ d- p: U% j
& J4 c$ ^5 t5 jConstruction 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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" E% ?1 |1 {/ C0 N6 q3 sTVBNOW 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。tvb now,tvbnow,bttvb- A4 I1 q! ?* M& l6 i# z0 e
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4 e5 V+ J( ]- G q% w7 i* wTVBNOW 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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發表於 2011-10-2 10:09 PM
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發表於 2011-10-4 11:33 AM
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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。* i; S2 a- m5 ~. [& Q! Q
發表於 2011-10-15 09:35 PM
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