本帖最後由 lilitan008 於 2011-10-3 12:57 PM 編輯 tvb now,tvbnow,bttvb z1 _ O, |& m- g K, Z; R. j4 l
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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!
9 [4 P' E' Q: d% [ z* F kTVBNOW 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 q$ r7 B- V4 a6 M3 q5 j( x* ^0 B
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Magdeburg Water Bridge in Germany What a feat! Six years, 500 million euros, 918 meters long. Now this is engineering! 公仔箱論壇7 T- _( }8 z# Y8 X! b5 h
This is a channel-bridge over the River Elbe and joins the former East and West Germany as part of the unification project. # j! o+ Z7 U! y* l g; e% Z
It is located in the city of Magdeburg, near Berlin.5.39.217.767 d5 x) \/ l7 O6 q, i
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The photo was taken on the day of inauguration.- Z& q( D. y) s: o& F
To those who appreciate engineering projects, here's a puzzle for you armchair engineers and physicists.8 ?/ U+ s# R @; l& W. @
8 p: q9 }. ]; q/ i/ w公仔箱論壇Question:
, A2 _( v4 A. 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。! h$ j5 f: Q! V) Q2 D+ K
Did that bridge have to be designed to withstand the additional weight of ship and barge traffic,/ @' P0 l; ^' y) Y
Or just the weight of the water? tvb now,tvbnow,bttvb8 i8 t+ B! u, t4 K& O9 l2 ?- S3 q
3 m K o9 I4 e+ eAnswer: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" T# n+ O4 r3 o/ W
( I( @/ Q; X. {5 e* @1 pIt only needs to be designed to withstand 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。6 p; h9 `2 s/ }. G% g: l
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' K# x2 M2 g) U5 @
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: h9 h7 o3 _+ G9 j" V# W' dTVBNOW 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
6 Z1 k% E7 ?! s/ m! 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。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& L" X: P+ o0 }# y8 v5.39.217.76The 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. 5.39.217.76$ D2 q% G( `. j4 W
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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.
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9 z" X) |% f+ \6 Z, }7 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。 |
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