本帖最後由 lilitan008 於 2011-10-3 12:57 PM 編輯 1 S( q% L; x* Y5 S
9 c' ]: M. B# | Otvb now,tvbnow,bttvbIf you are not a Physics person, read on and learn a fact of physics. 公仔箱論壇" p" ]8 @1 U( `8 u2 K* H
AMAZING! 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。* j/ l1 `1 G% O( ~8 U
' R' v" l, z5 }. h O2 ~3 w% A公仔箱論壇Even after you see it, it is still hard to believe!
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, [/ r9 u# w8 ?4 Q) B公仔箱論壇Magdeburg Water Bridge in Germany What a feat! Six years, 500 million euros, 918 meters long. Now this is engineering!
) n- w) N9 U, z$ O3 JThis is a channel-bridge over the River Elbe and joins the former East and West Germany as part of the unification project.
0 j. R7 g2 I5 D8 A5 t公仔箱論壇It is located in the city of Magdeburg, near Berlin.
1 z/ b6 e: q! Y1 t3 K5.39.217.77:8898TVBNOW 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。; g' k/ o$ U) y! Y) B9 w
The photo was taken on the day of inauguration.tvb now,tvbnow,bttvb# v5 ]. b9 ?( a- d
To those who appreciate engineering projects, here's a puzzle for you armchair engineers and physicists.
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Question: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 @/ M+ G1 p( p1 A
. A# ]/ P* j4 H0 ~; `# k; v0 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。Did that bridge have to be designed to withstand the additional weight of ship and barge traffic,公仔箱論壇: [& D4 [( G0 O$ @ M
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。; ^, B, k7 U' @ G9 j# n
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Answer:公仔箱論壇# }: O2 H' R' r( Z+ d
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It 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。. w' m5 \' M' N9 u- O
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
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The Incredible Magdeburg Water Bridge in Germany
- n8 K& N: ` S5.39.217.77:8898The 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.
& p, S- u4 R1 A8 ^" e$ fThe 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.
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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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+ a& i0 H2 P. w. uTVBNOW 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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