本帖最後由 lilitan008 於 2011-10-3 12:57 PM 編輯
- j w( F2 F) t; H% ?0 `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。2 n/ Y4 V4 I: f" L; _. j
If you are not a Physics person, read on and learn a fact of physics. 5.39.217.77:88988 Q& s* X' @5 V; ~0 W9 s+ R
AMAZING! ! H3 w( J8 K/ ~' B0 u8 F
, E+ b: D+ F }) n7 |8 [: NEven after you see it, it is still hard to believe!
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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。7 D, I- |/ Q! h4 V: R$ c
Magdeburg Water Bridge in Germany What a feat! Six years, 500 million euros, 918 meters long. Now this is engineering! 5.39.217.77:88985 F( k& O1 M% G5 q b) V* v) F
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。% q& [( h; i" H% W
It is located in the city of Magdeburg, near Berlin.: {8 I! w1 J- I3 ^$ i
6 n) v) H; } J- v公仔箱論壇The photo was taken on the day of inauguration.
/ t& v# d* E) P- q8 z9 `2 tTo those who appreciate engineering projects, here's a puzzle for you armchair engineers and physicists.+ ?" w2 f; g) T w8 k3 d) [' H" t
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Question:
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Did that bridge have to be designed to withstand the additional weight of ship and barge traffic,公仔箱論壇! ` m2 R, m) |' N. n* O
Or just the weight of the water?
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8 v% ?. V( `4 @! w: otvb now,tvbnow,bttvbAnswer:
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It only needs to be designed to withstand the weight of the water! 公仔箱論壇- s* l; }4 }; ]% A5 L; w* e2 x$ C9 A
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 A; A% S6 L: k( d# Otvb now,tvbnow,bttvbThe Incredible Magdeburg Water Bridge in Germany
8 b: f, c! O6 ?9 Q# Atvb 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.
1 E/ v" c4 P2 k8 J% v9 L, g# sThe 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,bttvb& ?- a1 m5 W0 ~* E5 ~+ 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 X: ~' c1 J+ [' V! I: N
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. 5.39.217.77:8898 k& C3 ~3 l, [; I, F1 X1 c
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