本帖最後由 lilitan008 於 2011-10-3 12:57 PM 編輯 公仔箱論壇( |2 H- ?& U3 n3 U9 o. u* S ~
( Z4 J( ~% z8 V; r' uTVBNOW 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. 2 M1 V4 m; c7 W0 x0 N, x: R& ~
AMAZING!
! j. ?* X# F- M& `5 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。
% f2 A0 v( X$ L0 PTVBNOW 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。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。, ]; F3 C6 F, }- t1 ]) t
6 e6 o! K' O2 k8 ?. a( E公仔箱論壇
% f1 ?' o& @& \- qMagdeburg Water Bridge in Germany What a feat! Six years, 500 million euros, 918 meters long. Now this is engineering! 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。/ Z: t3 h7 I: B# v& @
This is a channel-bridge over the River Elbe and joins the former East and West Germany as part of the unification project. tvb now,tvbnow,bttvb, s$ s7 P. }( _- A( P5 h8 ?8 z
It is located in the city of Magdeburg, near Berlin.
+ C2 p% a$ h, y7 V9 g1 S5.39.217.77:8898
* p7 l7 K! J$ U, ?/ dTVBNOW 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 photo was taken on the day of inauguration.
3 f' @) [ {8 L3 e/ L$ gTVBNOW 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.
2 i# ]3 u3 N/ ?" e3 o6 _tvb now,tvbnow,bttvb( T' b3 Z' p/ m/ B
Question:
w o/ i1 K) m8 g1 r8 w9 I% K! I4 O G
Did that bridge have to be designed to withstand the additional weight of ship and barge traffic,
5 R0 u0 ?" p" L, ^( [$ BOr just the weight of the water? ; Q* e( |$ \6 h3 @; ?4 y
3 S2 ?/ E/ h: {" C, o2 XAnswer:
" T: U; V) L9 F3 wtvb now,tvbnow,bttvb5.39.217.77:8898. e+ X/ Q- x* `
It only needs to be designed to withstand the weight of the water! tvb now,tvbnow,bttvb( I& y- v/ ^4 m9 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 loaded5.39.217.77:88984 u, A# T/ B& P4 M8 E7 r9 ` U
8 k; I2 j; K7 K8 g/ {& k5.39.217.77:8898) V' Y% ]( V; y6 o6 P1 {: D) h
The Incredible Magdeburg Water Bridge in Germany/ `2 u4 F5 M! L5 X% |
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.公仔箱論壇% @8 d" E% ^: `) y" |! `
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.
/ C3 }; N$ Z" A' 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。
4 O1 o! L3 W- ~tvb now,tvbnow,bttvbConstruction 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.
9 P0 ]! r, g: M- N$ y2 u- _公仔箱論壇- D, O3 j/ K5 [ C( ?/ U5 i- C1 B* u: p
) ~: ]7 P. _: c, W/ b0 i1 ]/ K9 U
! v8 O0 G& o$ i
6 ?& ?9 F6 X: F6 T7 O# t公仔箱論壇8 n* `+ [6 o, W# Z- @6 @1 N
" Z4 m/ O, \& @0 ~7 K# n+ ^+ 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。+ B$ {1 O7 U$ F7 p( S8 }4 z- s! q
/ R' y" K" V8 N% d
) }! R6 t$ J! O- ~" j5.39.217.77:8898 |
發表於 2011-10-2 10:09 PM
| 
發表於 2011-10-4 11:33 AM
| 
; j2 c: h: ?: Z7 L1 }+ x) v
發表於 2011-10-15 09:35 PM
|