本帖最後由 lilitan008 於 2011-10-3 12:57 PM 編輯 tvb now,tvbnow,bttvb0 s- P7 C" n! f4 R( I5 F
5 P4 f% T/ u; L; F& `0 D* q1 n* x( L! i. [. A
If you are not a Physics person, read on and learn a fact of physics.
5 P3 T8 g9 D7 p; W i/ F5 n$ x公仔箱論壇AMAZING! 6 `2 D Y2 d8 A6 ?7 T
/ ~4 X8 }6 o+ {3 E
Even after you see it, it is still hard to believe!1 H/ M( J- h" y4 I
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。9 ^6 P/ ]1 [+ X/ J) X
5.39.217.76# ` N! c( P# D$ k' O
Magdeburg Water Bridge in Germany What a feat! Six years, 500 million euros, 918 meters long. Now this is engineering! tvb now,tvbnow,bttvb! T, [% l& {# }+ k8 z0 P D) S- l. o
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# E, i i' K1 X' L4 n( K
It is located in the city of Magdeburg, near Berlin.
! D0 `2 Z4 N& C 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。6 L" F( A% P! a
The photo was taken on the day of inauguration.公仔箱論壇 }9 k# A6 e4 v: t, k
To those who appreciate engineering projects, here's a puzzle for you armchair engineers and physicists.
/ s1 U4 A. l7 L公仔箱論壇公仔箱論壇; G, \+ ?0 V9 ^8 B
Question:公仔箱論壇5 ~, ?4 |* k; u l5 ^- X( ?* w
) j) v9 |# b8 `( k; T( W
Did that bridge have to be designed to withstand the additional weight of ship and barge traffic,5.39.217.76* U6 ^* z% _% d0 h8 A
Or just the weight of the water?
4 b+ I9 n; ^6 y/ O9 q& Q
, h! R1 p2 y9 N3 O3 F) ^: P5.39.217.76Answer:9 h1 _: l3 O7 Y/ w( I* _
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。3 v. \; P5 ?4 V+ [5 H; [/ g$ b
It only needs to be designed to withstand the weight of the water!
' t5 F) q; [& U, e! xTVBNOW 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。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
! a8 b, m5 Z+ N! u2 H: l
' |* y) n% j: J6 Z0 X9 o* G L+ [$ O# m
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。8 y1 ?1 F/ `9 ~ i) z$ L; J. C( L5 j
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.6 M3 q- W N) J. G# K5 a; r( Q
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.
9 ^0 E' M# R4 X4 a- _) K2 {( a公仔箱論壇5 w# j! e, K F: K: Y3 h
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. 5.39.217.762 X3 L3 L. x( Z
公仔箱論壇: l$ n0 q) Q! a; ?, E
公仔箱論壇. x5 i$ E/ n* Y; F9 R
* [/ i+ X' D+ o: o' [/ e% g. {: D3 ]
0 z" S' e' T% X$ Y: j" b p3 p
- \2 k o0 T7 Z; Z1 U1 z/ [+ o公仔箱論壇公仔箱論壇: J& q7 a5 V" f& S: Y
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。9 d8 }- S( f i2 }1 X
/ l. N, ?2 `7 ]4 N
|