本帖最後由 lilitan008 於 2011-10-3 12:57 PM 編輯 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。/ z0 H k3 X) B" W9 p
+ ]/ `; s" b, Q" Z" i0 I' A6 g$ S! y. d
If you are not a Physics person, read on and learn a fact of physics.
( L9 S6 G, I7 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。AMAZING!
1 M- n% I) h4 p6 D( I公仔箱論壇7 J: _7 K* y2 Q6 G3 E) ~
Even after you see it, it is still hard to believe!5.39.217.76/ Y1 ~, k' V# P$ t
: u/ z7 o B. b$ x
5.39.217.76$ N# H, }4 E3 d1 L
Magdeburg Water Bridge in Germany What a feat! Six years, 500 million euros, 918 meters long. Now this is engineering!
\( i, f' Y. D+ RThis 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( o/ q0 B" }& u0 T
It is located in the city of Magdeburg, near Berlin.公仔箱論壇1 M5 [+ p. {% u \
tvb now,tvbnow,bttvb+ G/ O* y1 g& \& `' |+ H( e5 H4 x
The photo was taken on the day of inauguration.
/ |$ m2 ]! Y% }: ~7 DTo those who appreciate engineering projects, here's a puzzle for you armchair engineers and physicists.5.39.217.76# t4 v& G8 ~0 G; `3 A. Y+ G B
* G K; t. e# T& a4 Q
Question:5.39.217.768 T3 m2 x" m3 [+ W3 [$ c
6 D. X! M' s; P3 T3 u6 s9 qDid that bridge have to be designed to withstand the additional weight of ship and barge traffic,5.39.217.768 J% J, a8 c$ V* \
Or just the weight of the water?
2 P8 x4 A# |7 @5 I% s5.39.217.76
3 K7 P7 D7 u: r8 b: otvb now,tvbnow,bttvbAnswer:8 k2 a- V* @( g U; b0 j3 \
6 b/ ]* j3 p& M+ f
It only needs to be designed to withstand the weight of the water!
' V5 X. d$ \/ S2 @* 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。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
8 h: E' V. n5 ]7 ~# y; [* J公仔箱論壇5.39.217.76. }" T' g6 t0 C- S, ?* H: C2 c
公仔箱論壇2 K) ?6 Z- X9 d1 l$ T+ Z
The Incredible Magdeburg Water Bridge in Germanytvb now,tvbnow,bttvb7 [* R; l i7 w' g- J7 f' ?9 ^
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.tvb now,tvbnow,bttvb3 h! s& T! v) X2 A
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.
" _7 T% W& X- l0 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。
9 |, }( A$ T8 h4 T7 p3 hConstruction 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.
/ f8 v! k9 z1 t
( p# |6 ^! J& W O+ m" H6 Q2 m5.39.217.76tvb now,tvbnow,bttvb& q* h* q+ p8 D: P2 m
5.39.217.76. v) y! m2 Y" o2 o! v9 P
, J0 ~# {/ ~2 p Z- J2 p( o/ A! W" Y. Y; |6 z0 K
8 s9 N- \* }8 Z5.39.217.76
, E- s; T& w. o# {' ^5.39.217.764 j& @4 |/ P/ f. @
4 }; B: m8 D3 {4 R- {2 s |
發表於 2011-10-2 10:09 PM
| 
發表於 2011-10-4 11:33 AM
| 
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 p% u6 }% i+ \9 h+ ?) p
發表於 2011-10-15 09:35 PM
|