本帖最後由 lilitan008 於 2011-10-3 12:57 PM 編輯 ( \. m1 i- s8 T: ~) [
4 G$ _% c$ r6 F z3 b公仔箱論壇If you are not a Physics person, read on and learn a fact of physics.
+ l) g+ v4 S y9 M+ {) }9 H. ]tvb now,tvbnow,bttvbAMAZING!
6 d' i9 f& d; T r: |. q# H# y X5.39.217.77:8898tvb now,tvbnow,bttvb$ `+ ~# m# C& M5 M6 }
Even after you see it, it is still hard to believe!公仔箱論壇0 h! `5 I5 k- {+ D# O
3 {( d; a+ J8 n7 U( d! E4 g% s4 |公仔箱論壇
3 D% T+ k K6 C* o: ?( 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。Magdeburg Water Bridge in Germany What a feat! Six years, 500 million euros, 918 meters long. Now this is engineering! 公仔箱論壇9 o6 G9 ?3 E& `1 p- {/ p
This is a channel-bridge over the River Elbe and joins the former East and West Germany as part of the unification project. * J* N+ l& u5 t
It is located in the city of Magdeburg, near Berlin.
6 P* p0 G, r! f公仔箱論壇
1 m; u# d+ D% L" q: B7 h公仔箱論壇The photo was taken on the day of inauguration.
5 @/ M# B. I3 o* 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。To those who appreciate engineering projects, here's a puzzle for you armchair engineers and physicists.
0 [9 s; P; ?$ p- a公仔箱論壇
2 U$ p3 l9 H. @0 @. }2 c3 i4 H! G5.39.217.77:8898Question:
7 y( U! Y" v* A8 r* {. G公仔箱論壇; {+ W3 ~0 k8 w) M
Did that bridge have to be designed to withstand the additional weight of ship and barge traffic,$ g2 u( E8 T; e' R
Or just the weight of the water?
7 G8 ^! I4 _; h- g$ {& k/ U8 q2 w ]3 T6 y2 d T
Answer:$ W& e% W8 n8 f. N. ?4 u( a( k
2 j; B) t7 w! w( D
It only needs to be designed to withstand the weight of the water!
, s( i0 z+ A( |! p3 R公仔箱論壇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
' g5 b5 e9 m0 e0 B' F5.39.217.77:8898公仔箱論壇7 `' z, }) J6 Y
% C$ p' M! m4 b l( y- i; e/ XThe Incredible Magdeburg Water Bridge in Germany
" e9 B% {0 \8 N' W! W, H' N5.39.217.77:8898The 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.
2 `0 E6 D1 u6 M6 X( TTVBNOW 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。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.
2 X2 s8 f5 V9 n7 d+ A/ qTVBNOW 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 F8 Q0 k' `/ N T* c5 U( j3 Z公仔箱論壇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.
6 \6 Z! q/ M! M! n# k9 Ttvb now,tvbnow,bttvb3 N' c$ F5 R4 W' ~' Z0 F
, Q$ B7 |3 J' O! F& o5 G5.39.217.77:8898tvb now,tvbnow,bttvb; s+ Q9 g+ z: z+ |9 _$ e5 N
5.39.217.77:8898' i, j) d H9 j; Q) ~, N2 {
- I% _9 Q: t+ _+ m8 J
; S9 p: M8 F' s/ c( d- Y5.39.217.77:8898TVBNOW 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。( V/ |) D' u! T8 D/ X
$ V" Y) M3 d) n8 Y- R* utvb now,tvbnow,bttvb
# b- B% j+ `! ?& }) f9 m公仔箱論壇 |