本帖最後由 lilitan008 於 2011-10-3 12:57 PM 編輯 5.39.217.76+ q Y* p. F+ o" J
# {" Y; Z& v& `+ ~7 x5.39.217.76If you are not a Physics person, read on and learn a fact of physics. 5.39.217.76" B' ^' V/ T# G- K |: e
AMAZING! 5.39.217.76# F L) A9 p, f6 ^; H0 q8 H5 L
- D& d. }7 C; S公仔箱論壇Even after you see it, it is still hard to believe!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。4 q8 v% I. U1 k! e3 [ A+ t
tvb now,tvbnow,bttvb" z6 @4 k0 d, R* ^- h
& T& Z1 z4 O: b S1 p7 @# D$ l3 }5 Ttvb now,tvbnow,bttvbMagdeburg Water Bridge in Germany What a feat! Six years, 500 million euros, 918 meters long. Now this is engineering!
; T" B" I; T1 U5.39.217.76This is a channel-bridge over the River Elbe and joins the former East and West Germany as part of the unification project.
" o! w$ u1 T* m3 s, t1 K. Gtvb now,tvbnow,bttvbIt is located in the city of Magdeburg, near Berlin.5.39.217.76" X v3 J- |7 z3 N! P f
: _. B$ Q n5 P0 m. h& L/ I
The photo was taken on the day of inauguration.1 E; F; P% j( {7 T- K
To those who appreciate engineering projects, here's a puzzle for you armchair engineers and physicists.
- a( }+ \- U* S1 ~$ F8 @4 a* s! `5.39.217.76
& I* Q5 H5 C" @; ?0 K, y0 rtvb now,tvbnow,bttvbQuestion:
6 G# }2 t- P1 F. N公仔箱論壇
9 d; P* @! A$ `& aDid that bridge have to be designed to withstand the additional weight of ship and barge traffic,公仔箱論壇- d2 o; u' Z# t; `
Or just the weight of the water?
+ G! l+ S$ {2 V. p' J# f
, ?6 a& W1 P6 p3 P: q( [tvb now,tvbnow,bttvbAnswer: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。 x1 x+ g! m+ D& r% [
. ?. B' n3 B0 v6 B0 _6 N$ r1 M8 Rtvb now,tvbnow,bttvbIt only needs to be designed to withstand the weight of the water! - g. h% O9 C% g1 f, \7 O. F7 ]! I7 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 loadedtvb now,tvbnow,bttvb( b2 {: ?( n& t
J* p& V* |' n3 O" t# @. b
4 {" ?8 o! v) L8 B0 L6 \The Incredible Magdeburg Water Bridge in GermanyTVBNOW 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。& e6 L4 _; {6 L- B3 e \
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.
+ ^7 G( Z1 M6 L; K% P/ ]* \tvb now,tvbnow,bttvbThe 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.
6 Z% A. T2 Q3 I% X ~: j+ |公仔箱論壇公仔箱論壇8 H8 z) k7 @& o& q2 q
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.
, |9 `5 X) m+ ]* f9 V- rtvb now,tvbnow,bttvb
5 G' }% [! z8 ?* \1 k" }tvb now,tvbnow,bttvb1 S. O0 V) o( Z: {
; `$ x$ S) B0 D: T) D- f0 @* w9 F7 ? P
公仔箱論壇. I; m5 [! \. V
$ s. i, _0 s6 U5 ]* Y0 Utvb now,tvbnow,bttvb, C5 C, ~6 X$ W5 B
5.39.217.768 n W2 V& L. ^5 y
" R7 h: ?4 C: v8 T% Stvb now,tvbnow,bttvb |