本帖最後由 lilitan008 於 2011-10-3 12:57 PM 編輯 # ?+ q# X/ _" f5 ^5 Z% Y
3 C) t% \& p' i2 MTVBNOW 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。If you are not a Physics person, read on and learn a fact of physics. tvb now,tvbnow,bttvb! \, G6 c1 K* N% p9 J3 ^
AMAZING! & N; t2 v2 X- _. \
2 w" O: Q$ E. A. E) btvb now,tvbnow,bttvbEven after you see it, it is still hard to believe!
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Magdeburg Water Bridge in Germany What a feat! Six years, 500 million euros, 918 meters long. Now this is engineering! 5.39.217.77:88985 V) G9 h* \$ }
This is a channel-bridge over the River Elbe and joins the former East and West Germany as part of the unification project. tvb now,tvbnow,bttvb+ K" ?' x8 [" R, M7 D; T! T
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。3 ^/ A/ H0 G- s$ ^
( C6 ?" l4 E& vThe photo was taken on the day of inauguration.
7 d+ N# n" o7 o+ S O5.39.217.77:8898To those who appreciate engineering projects, here's a puzzle for you armchair engineers and physicists.
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; x' J5 A! e! T4 R2 |- r! B1 A; I5.39.217.77:8898Question:
/ H- y8 p$ E5 L; B$ I: TTVBNOW 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。
~* ^# h9 L0 b3 N* E, U公仔箱論壇Did that bridge have to be designed to withstand the additional weight of ship and barge traffic,
0 \4 L! Y6 i5 T- lOr just the weight of the water?
6 S5 L' s: L, P5 }# x q公仔箱論壇5.39.217.77:88987 l/ q! N; R7 W3 k- \! P# W
Answer:tvb now,tvbnow,bttvb |- F5 T& [; R0 o$ j. p; i
# T0 t x9 e1 lIt only needs to be designed to withstand the weight of the water! ; Q8 y5 r2 D l+ g: i1 B R
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2 f% x: y9 U/ l; G+ g
5.39.217.77:88984 U6 d* H* z9 A; s
8 {$ ^: w9 r& p1 XThe Incredible Magdeburg Water Bridge in Germany
+ G3 n6 f. x$ X. x7 I3 v. D/ t4 IThe 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0 j; k/ ^- h5 C" V! z
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.
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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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$ h! K) |9 G1 N) |; m' VTVBNOW 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。! G8 L5 `" t$ K$ c/ U4 N2 b
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7 q7 Z8 t8 i/ R: P3 |1 QTVBNOW 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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