本帖最後由 lilitan008 於 2011-10-3 12:57 PM 編輯
3 o# w8 r" A: S i" Y+ O0 yTVBNOW 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 U. l5 g. t Stvb now,tvbnow,bttvbIf you are not a Physics person, read on and learn a fact of physics.
7 A( B( N o. {( `tvb now,tvbnow,bttvbAMAZING!
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) S! t {+ F+ E. BEven after you see it, it is still hard to believe!: q/ |3 }5 o- D
9 ]* _( { n5 V) c/ M( m1 J* bTVBNOW 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。
0 Q8 e! H( g) k1 r% O t" E- z+ vtvb now,tvbnow,bttvbMagdeburg Water Bridge in Germany What a feat! Six years, 500 million euros, 918 meters long. Now this is engineering! % T! w$ v; j6 U. J+ h% a& D+ R& |
This is a channel-bridge over the River Elbe and joins the former East and West Germany as part of the unification project.
# A' B$ c3 u- d- M* i# Ptvb now,tvbnow,bttvbIt is located in the city of Magdeburg, near Berlin.5.39.217.76$ }0 ]# _5 _0 j( o% Y+ c
4 w1 \6 }) S% o% n |% m7 E1 OThe photo was taken on the day of inauguration.
6 u: D) |9 K4 |0 s# v. Stvb now,tvbnow,bttvbTo those who appreciate engineering projects, here's a puzzle for you armchair engineers and physicists.
$ q5 [9 B' ?% w3 n$ K公仔箱論壇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。* Q; r9 S5 ?, l6 f) ^
Question:( ~4 P% s# H; C9 @ Q' x0 X
6 O6 O9 [3 v0 Q5 b* NDid that bridge have to be designed to withstand the additional weight of ship and barge traffic,5.39.217.763 [; [( N3 a. i' r: ]# N: }
Or just the weight of the water? 5.39.217.768 Z8 W0 E; H, N: z+ ^
# D N' V2 B5 wTVBNOW 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。Answer:
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" B/ M+ v9 i* H3 o5 atvb now,tvbnow,bttvbIt 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。. T8 a3 `1 ^' x
Why? A ship always displaces an amount of water that weighs the same as the ship, regardless of how heavily a ship may be loaded5.39.217.76- n9 b/ S/ X4 f8 P4 {
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The Incredible Magdeburg Water Bridge in Germany
8 }4 D2 r# F* y' BThe 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.
$ U0 c2 g0 g% e) `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。6 D! B/ H3 S) x- K% U, B
: q* U+ C, u: ~6 ?5.39.217.76Construction 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. . ^# g& T% G O/ n
% U! k+ r4 S+ G p4 _: yTVBNOW 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。5.39.217.76/ N; ^' ]" F9 A1 F9 D. G
F7 @& a0 W) J) {公仔箱論壇5.39.217.764 C+ r( D# n. Y
tvb now,tvbnow,bttvb: K1 n! z* `2 h4 C+ X1 f) n
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公仔箱論壇' z/ L5 @" y/ k" x' c
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