本帖最後由 lilitan008 於 2011-10-3 12:57 PM 編輯 tvb now,tvbnow,bttvb3 k" G& t8 s+ ?4 l' k7 I2 V
公仔箱論壇* t3 r7 z5 f7 P' b% \. U5 e
If you are not a Physics person, read on and learn a fact of physics. ' s7 x, x! G2 t1 t
AMAZING!
3 M6 [0 D% m, R1 Q6 q: l5 btvb now,tvbnow,bttvb公仔箱論壇+ \/ ~( j9 C; ]4 ~
Even after you see it, it is still hard to believe!
+ \$ t( X* c z1 Y6 `0 y5.39.217.778 a. V n( v, o9 D* ]* _
8 O1 m. h3 w8 s2 @4 k5.39.217.77Magdeburg Water Bridge in Germany What a feat! Six years, 500 million euros, 918 meters long. Now this is engineering! tvb now,tvbnow,bttvb7 x3 Z2 z4 e7 A3 C4 ?
This is a channel-bridge over the River Elbe and joins the former East and West Germany as part of the unification project. 公仔箱論壇# s# T) d8 O: r9 w& H G
It is located in the city of Magdeburg, near Berlin.5.39.217.77* W0 @ m* \4 x: u- L( b! N1 F
" _! a6 t2 A& k1 N, [, W. A' r& yThe photo was taken on the day of inauguration.
2 O9 x& i* Z* f/ i4 aTVBNOW 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。To those who appreciate engineering projects, here's a puzzle for you armchair engineers and physicists.
0 m( J7 N I2 q# H Y- I! Z, B- j* [. [8 ~
Question:9 s' Q/ Z) v, }1 m+ y3 o; G# ~5 Z
6 ^2 ~7 R3 @3 S* Z3 D. U+ {Did that bridge have to be designed to withstand the additional weight of ship and barge traffic,
( X, z$ n# P/ H& J/ p3 E: MOr just the weight of the water? 6 |" I% C/ s6 P. y
公仔箱論壇0 a A, n% C! H( T
Answer:
3 I) A {; x" [' L, p G公仔箱論壇tvb now,tvbnow,bttvb; B6 n. s6 n d, v
It only needs to be designed to withstand the weight of the water! 1 v/ a/ c4 P) v8 K( \
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
1 Z! C; e/ \2 }; y( _) g3 N5 B- K5.39.217.77: Y- w5 X# E( B
: G" \3 s: A& W" A0 m3 K+ A5.39.217.77The Incredible Magdeburg Water Bridge in Germany
3 o3 N4 u4 |- e. W1 F# A/ YThe 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.
8 b. r) t1 c5 V公仔箱論壇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.
* O1 N# w# U a6 F3 z1 x4 g: oTVBNOW 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。' K2 w1 O# f% J" G6 V
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.
( H0 I- r- r [7 X) \" n公仔箱論壇
& B f/ i* L7 x& 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。7 f9 z: v. H8 r# |
+ @/ \' u+ C8 V6 s6 G5 s
. A0 O3 _0 ^2 I0 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。公仔箱論壇/ y; ~; C" p# k# a! E
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。: [/ w, w! z& {& {- g) w
. R: V' [1 N a/ I. \3 R. _5 ]$ s0 R6 |4 @7 E
% z/ x8 a1 @% J! ?
|
發表於 2011-10-2 10:09 PM
| 
發表於 2011-10-4 11:33 AM
| 
5.39.217.77- z9 i! }3 ~9 D& u) F7 N$ o
發表於 2011-10-15 09:35 PM
|