本帖最後由 lilitan008 於 2011-10-3 12:57 PM 編輯
2 s# j2 w% M* s3 t* S' wtvb now,tvbnow,bttvbTVBNOW 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。6 L% f( L# W5 U; _* k
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。( y3 H0 Q* ]$ p6 V# n8 V
AMAZING! 公仔箱論壇4 x2 J6 L6 G0 { k, {
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。! I! p) m, U5 E9 r" x* A
Even 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! 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。& M2 O; ~. _1 y
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, A7 J7 [: n) x& ]+ h
It is located in the city of Magdeburg, near Berlin.
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The photo was taken on the day of inauguration.
) z8 s- `3 V2 @0 f/ V0 h$ m公仔箱論壇To those who appreciate engineering projects, here's a puzzle for you armchair engineers and physicists.公仔箱論壇' c+ G! h. b9 v6 Q# m
: v" c$ C& E. i. A- `" Q) ]tvb now,tvbnow,bttvbQuestion:
& t1 O8 J$ K* {" iTVBNOW 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。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。, _' h) _2 E% {. V3 t. _
Did that bridge have to be designed to withstand the additional weight of ship and barge traffic,4 T7 q8 B U+ T6 C
Or just the weight of the water?
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5 _1 D6 \4 ?9 q5.39.217.77Answer:公仔箱論壇# x9 u) w' n/ j
( L" b6 v( y% a2 r2 d, ]; z4 B Y6 s, 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。It only needs to be designed to withstand the weight of the water!
# E5 {. D/ z) ]0 v* y! WWhy? A ship always displaces an amount of water that weighs the same as the ship, regardless of how heavily a ship may be loaded. C+ A+ e. V4 q$ c
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The Incredible Magdeburg Water Bridge in Germany
* L+ {2 ]; l* _" e: M2 u0 Etvb now,tvbnow,bttvbThe 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, {- [% T8 ~% X
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. 公仔箱論壇0 A0 x1 G0 ~( I4 X
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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,bttvb5 `( Q" J6 ?$ d& [$ X2 p0 u
( _" I4 [ m2 ZTVBNOW 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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" f' Y% F4 ^3 ?# {& p- ITVBNOW 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$ N+ O8 |7 X* ]& ^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。
1 j2 M/ D# d9 T公仔箱論壇公仔箱論壇6 t+ y+ ^9 p x) q) }; x7 C
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