本帖最後由 lilitan008 於 2011-10-3 12:57 PM 編輯
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`; H- r1 Q; n+ W# D7 xIf you are not a Physics person, read on and learn a fact of physics. tvb now,tvbnow,bttvb# l" E% V+ Y% Z* S
AMAZING!
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& ]/ C! e5 U# pEven after you see it, it is still hard to believe!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 ^6 g: P
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Magdeburg Water Bridge in Germany What a feat! Six years, 500 million euros, 918 meters long. Now this is engineering!
- F2 j2 s3 N0 V) Y% a. iTVBNOW 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。This is a channel-bridge over the River Elbe and joins the former East and West Germany as part of the unification project.
' v. e) w0 h+ }3 H5.39.217.76It is located in the city of Magdeburg, near Berlin.
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5 |- V) d6 s6 m# g( H公仔箱論壇The 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。" C' e3 k/ f3 u
To those who appreciate engineering projects, here's a puzzle for you armchair engineers and physicists.
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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。1 A- t5 Q. J# I+ K
Did that bridge have to be designed to withstand the additional weight of ship and barge traffic,tvb now,tvbnow,bttvb- V1 ]- F) |& v! e1 k
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。9 t) Q1 U( z! b @
5 F7 h. x5 {) ~( |+ X3 [0 kAnswer:公仔箱論壇! g7 p( {1 _3 \2 w! Q, r. {' d
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 N* [" F4 y/ {+ A' N" `1 K( ]- }
It only needs to be designed to withstand the weight of the water! * V! q: H8 L+ R8 ]+ j/ p! l( e
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8 {9 n a$ k9 x" T" A" k2 }
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2 k- u2 d% X) K) V# j5.39.217.76The Incredible Magdeburg Water Bridge in Germany
% c3 v6 f1 ~, S0 q7 u9 T4 gThe 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.tvb now,tvbnow,bttvb' m% o, }$ _+ `, \- g
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. X* x5 z3 w/ j% W# |
; f- j0 @3 d" W1 \! T' [0 c6 ^5.39.217.76Construction 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. tvb now,tvbnow,bttvb1 c1 K1 `$ g% `2 G
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