本帖最後由 lilitan008 於 2011-10-3 12:57 PM 編輯
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If you are not a Physics person, read on and learn a fact of physics. 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。3 t1 P2 ]: p6 c4 L1 t' s+ t$ R2 {! Y
AMAZING! 5 \) F# r. r$ X: r, M$ r
& D7 J3 k) f5 A+ N3 `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。Even after you see it, it is still hard to believe!5.39.217.771 n9 }* w) I2 }9 D7 ~" n) G$ Z
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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7 [7 q- l6 J. C* }
This is a channel-bridge over the River Elbe and joins the former East and West Germany as part of the unification project.
# W6 |# Y( {% E* N. Htvb now,tvbnow,bttvbIt is located in the city of Magdeburg, near Berlin., @1 m9 W) f: s$ w! V/ |4 T
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The photo was taken on the day of inauguration.
e% D: L# ~" G* k C: @3 i- E2 X公仔箱論壇To those who appreciate engineering projects, here's a puzzle for you armchair engineers and physicists.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。7 S# B* h9 P5 f) x
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Question:
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Did that bridge have to be designed to withstand the additional weight of ship and barge traffic,公仔箱論壇4 @8 ]; y. |) _/ u
Or just the weight of the water?
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, l8 ~2 }& h9 q公仔箱論壇Answer:
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! R+ q8 p6 b9 KIt only needs to be designed to withstand the weight of the water!
6 b9 T {+ Z8 A M' \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
9 w9 h n8 x) b1 g4 r公仔箱論壇
9 R* R) c8 Z, G2 d* g& B; HTVBNOW 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。5.39.217.77. H/ `( {$ z' M# U$ D' y
The Incredible Magdeburg Water Bridge in Germany9 b8 Z5 g9 _5 n8 V1 m& l
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.
" g1 |( X3 h9 C5.39.217.77The 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。+ d# B, Y. t: h* [4 |9 P
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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. tvb now,tvbnow,bttvb' w' X+ M8 D% p( X+ S
8 A) v6 k" G" V* D/ M公仔箱論壇tvb now,tvbnow,bttvb: O4 p$ |( b+ Q6 l$ r9 x
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[, w6 Y% \7 P, @3 n5.39.217.77tvb now,tvbnow,bttvb$ w& B) ~5 @3 `0 F0 p# f# \# ]
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0 Y9 N2 G$ R3 O G* V/ Z HTVBNOW 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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