本帖最後由 lilitan008 於 2011-10-3 12:57 PM 編輯 tvb now,tvbnow,bttvb- [, ^( v& m/ k/ g0 T
1 d( p& A. E) @1 VIf you are not a Physics person, read on and learn a fact of physics. 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。5 G& ~+ v0 k* Z* I
AMAZING! 2 [- w1 G3 d( Q# z8 R& v7 w
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Even 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!
) q1 G$ ^) \- ]! T {This is a channel-bridge over the River Elbe and joins the former East and West Germany as part of the unification project.
" Y4 \: C0 e4 `1 y { r: XIt is located in the city of Magdeburg, near Berlin.
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1 f7 L& W( s: Q5.39.217.76The photo was taken on the day of inauguration.
# W! X9 _4 g5 h" ?- e5.39.217.76To those who appreciate engineering projects, here's a puzzle for you armchair engineers and physicists.
1 T( a$ W9 a0 ^1 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。
p' t) t2 R! c3 Mtvb now,tvbnow,bttvbQuestion:
3 E3 `" w$ _; Y' ~5.39.217.76TVBNOW 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。7 o1 J. s* n: `4 O0 ]
Did that bridge have to be designed to withstand the additional weight of ship and barge traffic,
3 c. n/ `. L, F6 w {公仔箱論壇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。( U/ @; o0 ^) @0 E% k8 m1 O
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Answer:6 T5 t/ L* H7 i
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It only needs to be designed to withstand the weight of the water! tvb now,tvbnow,bttvb, u) V- Z5 _: t: ]7 }
Why? A ship always displaces an amount of water that weighs the same as the ship, regardless of how heavily a ship may be loadedtvb now,tvbnow,bttvb' ]4 q- n- ~; v
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3 x V) ~2 y8 W6 VThe Incredible Magdeburg Water Bridge in Germany. |, h0 ^3 G$ I1 g7 L- M
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.$ B+ v6 X) P3 }
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. ( u" E& a3 c+ q' v7 Q
( Z+ @. m" P; I5 JConstruction 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1 m; I4 L0 T; O5 c* r3 i
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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。6 @ H, H& q3 t4 ?; l6 I/ F
5 a- w. I/ O0 f' Q N7 ~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。
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