本帖最後由 lilitan008 於 2011-10-3 12:57 PM 編輯 tvb now,tvbnow,bttvb: l0 F" t# N( W& T: S/ ~3 q+ Z0 Y
4 x8 ~# x; q' I公仔箱論壇If you are not a Physics person, read on and learn a fact of physics. ) B% o( t! b5 t# ?) K
AMAZING!
/ }" ]* d* v- a. v5.39.217.76TVBNOW 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! n: U1 t }8 o q; i2 V& g' |
Even after you see it, it is still hard to believe!
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6 U* y ?$ o8 p% l# _! Y! Z2 g5.39.217.76Magdeburg Water Bridge in Germany What a feat! Six years, 500 million euros, 918 meters long. Now this is engineering! 公仔箱論壇/ h( S" d, o! C g9 _' F
This is a channel-bridge over the River Elbe and joins the former East and West Germany as part of the unification project.
" V8 t# a/ J7 ~7 m( c8 T5.39.217.76It is located in the city of Magdeburg, near Berlin.
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The photo was taken on the day of inauguration.
0 G- `) a5 z( C, b3 e. l1 d5.39.217.76To those who appreciate engineering projects, here's a puzzle for you armchair engineers and physicists.
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/ C& d Z+ Y; V- H# E8 e& fTVBNOW 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。Question:5.39.217.763 d. g) }9 N* \6 j4 z4 v& w! Y
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Did that bridge have to be designed to withstand the additional weight of ship and barge traffic,
0 N: e' a- g5 E9 L- VTVBNOW 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? 公仔箱論壇4 G9 ~3 e j" c) @, r7 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。/ k: p" K! ^/ {( J4 m6 J! B
Answer:
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It only needs to be designed to withstand the weight of the water!
7 U5 g. k3 J& G1 \公仔箱論壇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
' m1 f' U, X- \9 PTVBNOW 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。5.39.217.76+ @* y" {* u7 L. W5 ~# Y3 m
' U! V. M A; |2 X& e# JTVBNOW 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 Incredible Magdeburg Water Bridge in Germany
! v% U5 A& _# U$ E t& B& Ztvb 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.
) l* p K! H9 p6 M; Y公仔箱論壇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. " ~$ z+ G, Y) C" ]( Q
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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. 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。! x6 D; X1 c. U4 J5 E4 \ 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。! D7 `) I* W6 F$ K _, C/ M
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