本帖最後由 lilitan008 於 2011-10-3 12:57 PM 編輯 公仔箱論壇- J( Q! x% S3 r V! v) j9 N
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If you are not a Physics person, read on and learn a fact of physics. 5.39.217.77:88989 r7 v5 s% j, ~2 `! z' t
AMAZING! tvb now,tvbnow,bttvb2 J: {" }' D0 a- Y- L
: ^# T% _+ `7 a/ q j; o% JEven after you see it, it is still hard to believe!公仔箱論壇+ W. M% V5 a% v2 o ^7 v. D5 v
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- ~$ k/ D* A" x: K/ ?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8 }# ^! ~6 G4 H, h& W0 E
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 q9 L& _. r0 Z) ~4 M' v& C
It is located in the city of Magdeburg, near Berlin.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。* R; K8 n4 \, D9 s0 \/ f8 E% I
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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。2 N) v& b5 @3 [
To those who appreciate engineering projects, here's a puzzle for you armchair engineers and physicists.! w& j) b: f6 `* F+ `, n, ^+ O/ ?
3 c/ _! V( A9 l' ]; ?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。Question:
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7 ^$ V4 t& v ], S1 P8 W公仔箱論壇Did that bridge have to be designed to withstand the additional weight of ship and barge traffic,
8 k; F9 D) D) a$ c, z9 z6 I1 itvb now,tvbnow,bttvbOr just the weight of the water? 公仔箱論壇1 y9 @2 K: k. L2 N: Y8 U
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Answer:
6 e3 }7 a5 T nTVBNOW 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 g; h$ g, e+ f; ~6 v( I8 W! `1 g. L; ATVBNOW 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 only needs to be designed to withstand the weight of the water! 1 G& z9 }6 S, S, Y/ ^1 S6 |
Why? A ship always displaces an amount of water that weighs the same as the ship, regardless of how heavily a ship may be loadedTVBNOW 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。/ x) t5 P% T4 v" ~$ @) z
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The Incredible Magdeburg Water Bridge in Germany
: p/ m7 c0 W! v: } S0 y" E5.39.217.77:8898The 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" A) W) ? D6 K b
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. 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 H$ i0 v% P) b; T- l' p- m
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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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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。8 u- P. r3 _# d6 t: q8 x
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