本帖最後由 lilitan008 於 2011-10-3 12:57 PM 編輯 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。0 I8 H, G# t1 H
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。/ a, s3 Q( M9 ^7 C
If you are not a Physics person, read on and learn a fact of physics.
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Even after you see it, it is still hard to believe!
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# M2 Y- ^) o1 ]3 I( A公仔箱論壇Magdeburg Water Bridge in Germany What a feat! Six years, 500 million euros, 918 meters long. Now this is engineering! tvb now,tvbnow,bttvb7 S9 ` W# T) z/ r4 d
This is a channel-bridge over the River Elbe and joins the former East and West Germany as part of the unification project.
. W7 B: L; @! ^% `6 k' MTVBNOW 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 is located in the city of Magdeburg, near Berlin.
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The photo was taken on the day of inauguration./ Q0 ~/ O+ w/ t% E- L/ d# m
To those who appreciate engineering projects, here's a puzzle for you armchair engineers and physicists.tvb now,tvbnow,bttvb! @. _* E5 [: m& m; h
+ \# c( W' u0 Y公仔箱論壇Question:
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5 I4 V+ Y6 h, a7 o8 ?7 bDid that bridge have to be designed to withstand the additional weight of ship and barge traffic,www3.tvboxnow.com# d @) K, z7 U |% m& r1 f
Or just the weight of the water?
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" }' x9 B! W. V* \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。Answer:# t4 `& } R* {* y# z& A% l
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It only needs to be designed to withstand the weight of the water!
5 ~7 t; Y, b9 p5 Y2 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。Why? A ship always displaces an amount of water that weighs the same as the ship, regardless of how heavily a ship may be loaded3 e$ ~1 Y6 {: t$ J
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The Incredible Magdeburg Water Bridge in Germany, `' t% g# ?, z9 K2 X1 k
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- |' Q+ K7 T0 }( b$ ~tvb now,tvbnow,bttvbThe 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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* Q s9 P& F1 R otvb now,tvbnow,bttvbConstruction 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。9 C* B5 f. j$ a+ f
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) ?8 r! d- k+ mTVBNOW 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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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。0 B' O: ^$ G/ p/ Z2 G+ w
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 L4 K J C+ v: E/ C) e7 S
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