本帖最後由 lilitan008 於 2011-10-3 12:57 PM 編輯
4 O- n6 q. \3 T5 }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。公仔箱論壇% Z: o" b3 {$ f: N
If you are not a Physics person, read on and learn a fact of physics. 5.39.217.76- J( Z( W0 ^; d; l. W7 ~
AMAZING! - c6 Q8 N; O6 h
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Even after you see it, it is still hard to believe!5.39.217.76* }) y! i2 i+ a; |
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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。4 C9 m# e. h& k
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。; S" l; t0 T- E& \( V
This is a channel-bridge over the River Elbe and joins the former East and West Germany as part of the unification project.
2 S) A5 Z* n/ E+ BTVBNOW 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., g1 ]* @, \ _; z' m
]% u1 I' m% T5 ]; J" ~! uThe photo was taken on the day of inauguration.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。- b+ Q& _- ~, G& `
To those who appreciate engineering projects, here's a puzzle for you armchair engineers and physicists.
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6 M9 g; g# I8 _8 M公仔箱論壇Question:5.39.217.76- N$ u) K+ k8 R5 _( k# Z; J0 _
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Did that bridge have to be designed to withstand the additional weight of ship and barge traffic,! B- M: V# K% o7 O3 F- y! H
Or just the weight of the water?
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Answer:9 v/ k- R9 ^! P9 A- i
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It only needs to be designed to withstand the weight of the water! 9 O+ k. _, `- W8 y
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公仔箱論壇& P! A& B7 H5 ?6 j* p& V! Z
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! R% W p& R. p( X+ h2 N5.39.217.76The Incredible Magdeburg Water Bridge in Germany公仔箱論壇0 x+ {0 R9 `! \0 r- M$ D/ 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7 U |( `: i5 j! F) L- c+ N
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. 2 s. r2 ^0 r5 J U( w
- F0 A6 i1 b, E: @- W4 p/ `$ Z/ MConstruction 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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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。# Q4 K% [, ^7 } @8 T5 n" ?. G
tvb now,tvbnow,bttvb4 Q3 H% J* \9 t6 s3 K# @
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2 X, g$ q, U% 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。
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