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. 5.39.217.76; P8 V. n: |+ S) h. C4 f/ c6 F# X$ G
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。. N# |$ R- n0 Z( d; n
* m# d) f3 U& h0 v/ _5 HEven after you see it, it is still hard to believe!
- ]+ N8 a' E2 z% JTVBNOW 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。tvb now,tvbnow,bttvb, ]8 \7 |- ?5 J* W. s. t+ @( i5 W
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Magdeburg Water Bridge in Germany What a feat! Six years, 500 million euros, 918 meters long. Now this is engineering!
* ^( L( C( h& ^! `2 b3 J5.39.217.76This is a channel-bridge over the River Elbe and joins the former East and West Germany as part of the unification project.
h9 U: s# n. S7 p7 X# B% dIt is located in the city of Magdeburg, near Berlin.tvb now,tvbnow,bttvb% x4 _0 ^. o0 |3 P/ ?. K4 l% y3 n
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The photo was taken on the day of inauguration.
) L2 ]0 w$ |% c3 i1 qtvb now,tvbnow,bttvbTo those who appreciate engineering projects, here's a puzzle for you armchair engineers and physicists.
) t0 a; N- r% _- ?6 LTVBNOW 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。 T1 w. C5 l0 y, I% }8 w* p
Question:
3 }1 e! v$ V2 ~tvb 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。. q- G5 S4 E5 y9 ]
Did that bridge have to be designed to withstand the additional weight of ship and barge traffic,
/ ]/ B; m( S; _% k4 ]- l! j5.39.217.76Or just the weight of the water? 公仔箱論壇/ s- a: l0 o7 A4 R& r7 o$ J6 G
& f5 l8 ?& P0 w5.39.217.76Answer:
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, z, c% _; M$ D8 r. t$ l; }It only needs to be designed to withstand the weight of the water! tvb now,tvbnow,bttvb2 T, i0 S, k9 @6 b `& P9 u8 X6 B8 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
( S* R+ P5 p" sTVBNOW 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。2 ^; K3 ?: P3 q6 M
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。. R P/ z$ t) {7 ^* S( a
The Incredible Magdeburg Water Bridge in Germany公仔箱論壇/ H: l) g" r! O2 z0 c
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.
3 X6 C8 F0 h1 e1 XThe 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( Y4 Z- o% a9 Z
- c+ S( J: ]9 K/ E; }( Xtvb now,tvbnow,bttvbConstruction 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. 公仔箱論壇1 s) u/ Y1 Y" p& _2 J
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+ _9 P6 w7 v3 [7 H- R0 U5.39.217.76公仔箱論壇0 Q* @- p8 j4 U* @9 U! ?& P) F
0 o+ l3 E2 N2 `: c) f1 x V k6 gTVBNOW 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 w+ X7 T8 U, _
* T5 v, v: Q" Y. I5.39.217.765.39.217.76/ l3 s$ p* O# t/ t
A! l6 o, I( ~( n& W% h( ?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。
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