本帖最後由 lilitan008 於 2011-10-3 12:57 PM 編輯
; b/ M/ y/ Q6 j, N- V' K公仔箱論壇
- ] c8 u0 R# ?公仔箱論壇If you are not a Physics person, read on and learn a fact of physics. 公仔箱論壇; D$ b2 Y9 K$ C
AMAZING! 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。( |* L: H3 e( l6 M* @. l# @
9 @. P, v h& s$ n# W" w公仔箱論壇Even after you see it, it is still hard to believe!
4 H# _( y. r C. c公仔箱論壇
0 D4 C6 a, Q$ _. [) _: `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。
+ q; m# X: d0 C1 ?. O% }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 U& M0 M: K n
This is a channel-bridge over the River Elbe and joins the former East and West Germany as part of the unification project. 6 ~+ ?9 \ |4 p6 ?; U! s
It is located in the city of Magdeburg, near Berlin.
9 I6 x. w1 }; Q
" O7 s. L" S% K3 m- w- f) G" s5.39.217.77:8898The photo was taken on the day of inauguration.
3 e, E' @3 L6 j/ Y# S6 x) |To those who appreciate engineering projects, here's a puzzle for you armchair engineers and physicists.3 |: t. m8 C9 H1 Z3 C6 B
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。- o: M% j: O# @
Question:; s" X6 L' B; Y/ J2 M- F
" S- T0 t# P. T8 M( X) x# m. DDid that bridge have to be designed to withstand the additional weight of ship and barge traffic,: r9 E, J3 n4 {; v/ d! ]
Or just the weight of the water? ' {, e7 o1 K2 i7 y. W3 W. [1 P
( e K0 d. F9 KTVBNOW 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。Answer:tvb now,tvbnow,bttvb; R/ g9 M, L& m/ X! B
0 A* T) Q5 x* Y* D0 k W7 v* r( |1 I
It only needs to be designed to withstand the weight of the water! 公仔箱論壇; ~6 r) j% m# P/ h4 I C$ @* y
Why? A ship always displaces an amount of water that weighs the same as the ship, regardless of how heavily a ship may be loadedTVBNOW 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。. S6 H( W* F: b3 l& R' o9 v
5.39.217.77:8898) C C$ b/ |" Y+ s/ _9 Z, y6 N) M
公仔箱論壇. W+ Z& P+ m; e- X+ s9 H2 ^, J
The Incredible Magdeburg Water Bridge in Germany
6 I( X" [1 J& b# c4 S% ]6 gtvb now,tvbnow,bttvbThe 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.
& o) C8 d! s, m5.39.217.77:8898The 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.
# B' N# f; f; F' P% G# W: O1 n5.39.217.77:8898tvb now,tvbnow,bttvb9 Z1 X( ?, m. v4 d; \1 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. # E0 t4 J4 {- Z% _( z5 ~
! @# ^& e+ W. N9 |( e8 Y6 `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。1 a4 w) ^# C) R0 v7 e9 F2 q+ x) d
4 b& s! ?. a) G4 e3 ~
, v' y2 A( g/ b' X, D1 Q6 {公仔箱論壇8 K9 }% q2 [7 `3 m
2 O% v% {# T) J; v
公仔箱論壇' \9 B) t* O, V# v
' ^# b' u# R' C* ]! Y; \" wTVBNOW 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。) g* Y) Z8 v* ?& V- d
|
發表於 2011-10-2 10:09 PM
| 
發表於 2011-10-4 11:33 AM
| 
+ R9 p; |# o1 u% h5 E W- \
發表於 2011-10-15 09:35 PM
|