本帖最後由 lilitan008 於 2011-10-3 12:57 PM 編輯 ; @% Q& M" {4 k6 g9 ^5 s; z, K, l; D' |
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If you are not a Physics person, read on and learn a fact of physics.
1 {% u! a$ E$ ftvb now,tvbnow,bttvbAMAZING!
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8 K6 \! X0 c9 k0 R- ztvb now,tvbnow,bttvbEven after you see it, it is still hard to believe!
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Magdeburg Water Bridge in Germany What a feat! Six years, 500 million euros, 918 meters long. Now this is engineering! tvb now,tvbnow,bttvb; c; v1 N' w: F0 a C6 e+ U
This is a channel-bridge over the River Elbe and joins the former East and West Germany as part of the unification project. 公仔箱論壇( y/ t# I: P: C9 ~% t3 C$ i
It is located in the city of Magdeburg, near Berlin.
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+ c5 O3 Z3 J( Y: eThe photo was taken on the day of inauguration.
; f7 H0 j) z* P' S" n; r7 M1 [5.39.217.76To 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。$ P5 C9 N$ @2 h3 [: ~' \
8 {+ [5 S& a9 s8 ?0 \tvb now,tvbnow,bttvbQuestion:
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" S+ C" @1 K, Ftvb now,tvbnow,bttvbDid that bridge have to be designed to withstand the additional weight of ship and barge traffic,7 Z" u' V2 |; B6 ~: |$ |: x9 w) a
Or 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。1 N! }" s. Z$ h# H/ {
" `. l/ f6 Y( g8 n1 ]0 `' v5.39.217.76Answer:
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1 L. Y7 l: k$ B0 m/ x, L* ~6 ~6 ?; _5.39.217.76It only needs to be designed to withstand the weight of the water!
" Z' Z0 Q* E* V$ k) C3 g4 ~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。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。* m7 c+ ?! P( A4 x$ X
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。) S% p- w1 u q. |9 M1 D3 K
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The Incredible Magdeburg Water Bridge in Germany
3 [7 G( F6 x `( r. s2 T公仔箱論壇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.
' N( Z6 p' M. ?3 e( C6 Z5.39.217.76The 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. ! `0 U3 x) I' F6 X( X
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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. 公仔箱論壇4 a, m; s/ Y' G3 P C4 Y1 M/ m
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, } X- A0 \0 @5 ^9 A8 S. o9 O- v, Q9 y7 oTVBNOW 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。9 V# b! T" w+ \; [5 O$ J U
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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。% ?8 Y# I( h6 f: c- A
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