本帖最後由 lilitan008 於 2011-10-3 12:57 PM 編輯 3 z/ {# [& A) W; r
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If you are not a Physics person, read on and learn a fact of physics.
$ e/ m! Z. j6 I9 P( NTVBNOW 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。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。- l7 [# d9 y M/ g% u
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Even after you see it, it is still hard to believe!9 ^6 E0 N( l3 Z3 f! ?' v
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Magdeburg Water Bridge in Germany What a feat! Six years, 500 million euros, 918 meters long. Now this is engineering! 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。9 o5 P9 H" \8 K) _: D
This is a channel-bridge over the River Elbe and joins the former East and West Germany as part of the unification project. " q7 e7 p% R! u
It is located in the city of Magdeburg, near Berlin.
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The photo was taken on the day of inauguration.tvboxnow.com* c Y+ h; ^) `' _% V0 l" p
To those who appreciate engineering projects, here's a puzzle for you armchair engineers and physicists.公仔箱論壇/ v3 i6 {( _+ u
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。/ f6 [0 e0 v0 g
Question:
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0 I% y: Z" E7 K+ n6 `tvb now,tvbnow,bttvbDid that bridge have to be designed to withstand the additional weight of ship and barge traffic,
; }5 l. E+ \8 m3 gTVBNOW 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。Or just the weight of the water?
# n- V7 E. f' QTVBNOW 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。tvboxnow.com- R; |$ [% W5 a3 ~7 d3 H
Answer:tvboxnow.com4 Q, D6 N/ U: e( O' U$ A) n
0 {9 F( X+ N+ N" K$ @8 O d8 b2 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。It only needs to be designed to withstand the weight of the water!
, k2 ?5 `* y9 P: k' f0 Q! ttvboxnow.comWhy? A ship always displaces an amount of water that weighs the same as the ship, regardless of how heavily a ship may be loadedtvboxnow.com' @3 w- A. r/ |7 q, I
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8 f8 R& d4 ?2 ]9 P3 I$ x1 H" e/ pThe Incredible Magdeburg Water Bridge in Germany7 Z# N' h6 z5 V6 ?. n
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.公仔箱論壇4 U7 ~5 |& g6 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.
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. {& A6 b3 w( fConstruction 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. 1 d, p6 e4 d+ M
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$ l* Z. }% }8 v公仔箱論壇. J0 m! `# v0 }4 l; g: [
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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' P# i6 A9 A& L4 {" a
發表於 2011-10-15 09:35 PM
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