本帖最後由 lilitan008 於 2011-10-3 12:57 PM 編輯
2 S0 K" t2 R7 C: k$ P; [" \2 o公仔箱論壇! X1 [3 a, j4 y/ ^
If you are not a Physics person, read on and learn a fact of physics.
+ u. \- u0 E' }4 Q3 q, f# |. u公仔箱論壇AMAZING! 4 C2 T" Z5 t) p
3 |7 J$ a9 x" F1 U2 S! x& \+ j% B( i% C9 s
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 f- `' B- Z; S
5.39.217.76/ q# `; x0 F+ s/ I3 u( T* A
) t* ]/ L6 ~/ G) }Magdeburg Water Bridge in Germany What a feat! Six years, 500 million euros, 918 meters long. Now this is engineering!
) b9 W& m9 p( ?+ S1 Z+ k& ?# x) fThis is a channel-bridge over the River Elbe and joins the former East and West Germany as part of the unification project. ( H7 v" L; d. v8 t& z R6 t
It is located in the city of Magdeburg, near Berlin.公仔箱論壇9 A# {, Y: W, u* C# ^: v2 k
s+ u, K/ d8 B& N% q _& ^
The photo was taken on the day of inauguration.5.39.217.76, M! h" ?. l! q' Q
To those who appreciate engineering projects, here's a puzzle for you armchair engineers and physicists.
# [! f% q1 n/ p, n# BTVBNOW 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。5 M$ N% N! U6 y( }! A( O' H
Question:
$ f, Z* }( Z C/ c) H [2 @: S$ R9 Ktvb now,tvbnow,bttvb
2 `5 ~' W# i6 l( w& j5.39.217.76Did that bridge have to be designed to withstand the additional weight of ship and barge traffic,
( L0 J2 F+ E( x: N% L5.39.217.76Or just the weight of the water?
( }) L7 Z# q) `2 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。
( U( @0 W- T! e, S) N1 Y公仔箱論壇Answer:
) v3 n0 q4 o; k% {' 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。, E7 ^2 H: @: S
It only needs to be designed to withstand the weight of the water! 0 l& n u* b' _* o4 C- T
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
+ x0 p5 O) M$ J; Q8 B8 k- }+ D+ ltvb now,tvbnow,bttvb9 h. g3 s0 |2 p2 B( W
tvb now,tvbnow,bttvb. e/ e, X7 S0 `8 i
The Incredible Magdeburg Water Bridge in Germany
7 `. C1 t( a) G$ d4 n9 kThe 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.
: P! O( Z/ e$ L& Y1 H5.39.217.76The 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. tvb now,tvbnow,bttvb' z+ y- L; Q X3 t
5.39.217.76& O0 N5 h, [ o
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. 公仔箱論壇0 a! Q) a. O$ U. Y2 w9 {/ o2 g
tvb now,tvbnow,bttvb, o2 W9 N! G" A' h
7 L( y9 Y# e$ q$ J5.39.217.76
4 i: r% O! z7 w$ w: u; ~: @5.39.217.76
7 O8 A" Q- @: }* N5 p8 \% w0 ~0 W0 ?( A
2 r3 L" }# x' l9 c2 ?4 V" J& H7 B公仔箱論壇tvb now,tvbnow,bttvb: S& u0 X& g5 W
) I8 O2 E+ F6 ~6 p1 O) ttvb now,tvbnow,bttvb* A, o# j, o" G- q
|
發表於 2011-10-2 10:09 PM
| 
發表於 2011-10-4 11:33 AM
| 
發表於 2011-10-15 09:35 PM
|