本帖最後由 lilitan008 於 2011-10-3 12:57 PM 編輯
2 c8 `8 P$ p2 a$ r6 Y7 C# a0 W公仔箱論壇" T$ D; A3 r7 i8 v. }$ E
If you are not a Physics person, read on and learn a fact of physics.
' f$ U7 _- M) i9 i公仔箱論壇AMAZING!
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- K; B* s# x. }$ O5.39.217.76Even after you see it, it is still hard to believe!
6 |% E) m% W( Z( RTVBNOW 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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- `4 ~. O6 x( N0 X9 `5 sTVBNOW 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。Magdeburg Water Bridge in Germany What a feat! Six years, 500 million euros, 918 meters long. Now this is engineering!
2 v7 Z4 `/ x2 }. Q$ [0 q- H6 [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。This is a channel-bridge over the River Elbe and joins the former East and West Germany as part of the unification project. 公仔箱論壇/ ]* R- Z+ w) j% j
It is located in the city of Magdeburg, near Berlin.
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" D* [, I7 X2 J/ X公仔箱論壇The photo was taken on the day of inauguration. i4 Q8 F5 @8 j% S7 D9 {
To those who appreciate engineering projects, here's a puzzle for you armchair engineers and physicists.! ?. }( N4 F& }) r9 \/ l
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Question:/ v8 M, ?+ f) 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。5 z$ ^. I9 u. P% T, k0 s
Did that bridge have to be designed to withstand the additional weight of ship and barge traffic,
3 N. J3 ^& Z: x, D4 c( {tvb now,tvbnow,bttvbOr just the weight of the water?
) l# |9 |$ q" f9 r1 T: b! rTVBNOW 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。
8 ~/ w2 V" y$ e) ~& z公仔箱論壇Answer:
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: ? [& W2 j4 q! Z公仔箱論壇It only needs to be designed to withstand the weight of the water! tvb now,tvbnow,bttvb4 f* o( V' u7 K( w. h% n$ w+ C
Why? A ship always displaces an amount of water that weighs the same as the ship, regardless of how heavily a ship may be loaded2 s( n+ T# P. A0 \. H" y; s
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) B! M5 P9 e: @0 d! G; q4 E6 a0 wThe Incredible Magdeburg Water Bridge in Germany
/ [5 _' P) v5 H$ y9 j2 n, ZThe 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.
4 S' I) [% p2 w$ B0 X* a8 x6 i3 ]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. 0 Z2 U$ i2 U/ r: q9 S L+ D
; X! {1 v0 [' ^& h- Dtvb 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. 5 T _: c @' l3 \! f' n. g6 b
" `9 m- C- {1 yTVBNOW 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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