本帖最後由 lilitan008 於 2011-10-3 12:57 PM 編輯 5.39.217.760 f1 ^ C, M; G7 n$ y2 Y6 Q5 s
% {* H% F% l% aTVBNOW 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。If you are not a Physics person, read on and learn a fact of physics.
w# C9 Y- e% O& STVBNOW 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。AMAZING! : G9 y2 {. e5 i" }5 t7 ~: d
5.39.217.76% o2 K- \' ?# y8 T+ m
Even after you see it, it is still hard to believe!公仔箱論壇# L( S' ?/ ~# B- n
+ y& s$ A) ?6 E" v$ R$ i s
: D& d$ b) h1 _Magdeburg Water Bridge in Germany What a feat! Six years, 500 million euros, 918 meters long. Now this is engineering! tvb now,tvbnow,bttvb, C9 e1 f z% }* B) w; i
This is a channel-bridge over the River Elbe and joins the former East and West Germany as part of the unification project.
& [+ p. g9 q- O; k5 c7 t& kIt is located in the city of Magdeburg, near Berlin.
7 f) s& H' r [2 Z! \3 [1 @1 _. FTVBNOW 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。
# K, n* ]% h# b2 XThe photo was taken on the day of inauguration.
/ T$ D: `! o1 oTVBNOW 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.
. g& a8 W5 ]' Z+ C0 r
% @" O9 }5 a+ X, }Question:
! p5 P4 E4 V5 t- |8 l) D5.39.217.76TVBNOW 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。$ Z& h/ n2 @0 ?4 \" {
Did that bridge have to be designed to withstand the additional weight of ship and barge traffic,5.39.217.76% `% N8 w* b; i' E' Q. w7 {
Or just the weight of the water? 公仔箱論壇( n6 E: H Y H
5.39.217.76% k9 c' W' I; K' h& P
Answer:
5 l/ `! u" G' k7 f0 V* s) U6 K5 stvb now,tvbnow,bttvb% U; ~9 p5 a2 U7 ?
It only needs to be designed to withstand the weight of the water!
6 x* t5 \! U9 n1 @( z: KWhy? 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。* A2 x) v% f, W/ z. [( N
, C1 o [* g3 X" A' S" g9 N
6 H) N8 y$ I6 \* C公仔箱論壇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。5 r* L9 \5 J5 p
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.
# \% w/ h/ N- E2 e+ {+ {% f2 q; O5.39.217.76The 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. 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。* t% Y. J+ r' a
- n8 c b9 z* ]0 y' g9 K% w8 w8 v( 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.
7 K, r# a4 y E0 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。) {" T9 G- ^ o7 V0 z' e" k' z8 C. o6 V
+ L+ `7 G6 `1 p
3 r! P, n! D1 Q' `9 f% x: |: m7 w4 \! l4 R
+ D' v# U V% W' u: E! }& U& \$ c& b# q0 M! g n$ ~ ]
公仔箱論壇, R# k b: J/ [" T3 Y" }: m2 _ r
5.39.217.761 x# B! p7 M! X) \# w7 ?4 e
tvb now,tvbnow,bttvb, U# I% y/ ]8 u' X
|
發表於 2011-10-2 10:09 PM
| 
發表於 2011-10-4 11:33 AM
| 
tvb now,tvbnow,bttvb2 L. e0 A( ]; F& X6 W' z5 c
發表於 2011-10-15 09:35 PM
|