本帖最後由 lilitan008 於 2011-10-3 12:57 PM 編輯 tvb now,tvbnow,bttvb) N* y4 O* n: s5 J5 {: B0 J
# N3 s. o }, r# M& O' |. s5.39.217.77:8898If you are not a Physics person, read on and learn a fact of physics.
6 t& `0 r/ i8 W公仔箱論壇AMAZING! 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。; R* C: z6 l, M o
7 y1 s* e: y8 ]7 h: Y; {tvb now,tvbnow,bttvbEven after you see it, it is still hard to believe!tvb now,tvbnow,bttvb( b" _; H" _0 x( |' N3 Z7 j
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Magdeburg Water Bridge in Germany What a feat! Six years, 500 million euros, 918 meters long. Now this is engineering!
0 S# N( ~% y, A公仔箱論壇This is a channel-bridge over the River Elbe and joins the former East and West Germany as part of the unification project. 5.39.217.77:88985 \( f% q8 H5 ^) C8 k
It is located in the city of Magdeburg, near Berlin.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。, q5 t) Q& [( w# S3 e- }7 l
% j2 L( ~7 d9 }3 M1 Y! XThe photo was taken on the day of inauguration.5.39.217.77:8898" c; l$ ]+ ~' z5 x% S: w
To those who appreciate engineering projects, here's a puzzle for you armchair engineers and physicists.
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Question: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。+ f7 M% P( x* B5 j8 e6 V# n0 r
& O$ j( n; E% x6 Z1 ^3 ]7 QDid that bridge have to be designed to withstand the additional weight of ship and barge traffic,6 x* c% s% Z l' o/ W
Or just the weight of the water? & V* l5 Y: h6 ^1 d
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Answer:5.39.217.77:88981 J& Z2 v8 @; d9 V( M b) y* j
) S, E7 h$ X; V' G( v2 C$ L% ptvb now,tvbnow,bttvbIt only needs to be designed to withstand the weight of the water! / W: s& H/ d8 @+ J! h: E8 ^; X
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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, _4 b3 E! |, i4 }5.39.217.77:8898The Incredible Magdeburg Water Bridge in Germany5.39.217.77:8898 N* D b, [6 {5 }2 I: d% D- Q$ f
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.
) V% R, a5 L9 Y1 ^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.
5 y$ V% @: n 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。" M& T9 Z- K: P$ R+ B2 |, W
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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. R- S5 D7 h+ n+ ?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5 D; R5 U9 N1 x- F% Y
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