本帖最後由 lilitan008 於 2011-10-3 12:57 PM 編輯
( N, a G5 |" b# L0 \4 {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$ @/ K$ W$ j+ V4 [1 S7 Y3 w0 QIf you are not a Physics person, read on and learn a fact of physics.
9 c5 \8 W) V' K7 v* `* 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。AMAZING!
* b" Y1 R: V$ ~" J* o9 v- X
4 ?* v$ `9 ]) Z/ n% M, Ctvb now,tvbnow,bttvbEven 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。# I1 q) d6 q2 |5 y- C
2 L A+ t) k5 P; e: d" J' S5.39.217.76
1 C3 z+ {% m# k5 F' d# J5.39.217.76Magdeburg Water Bridge in Germany What a feat! Six years, 500 million euros, 918 meters long. Now this is engineering!
7 ]* p3 b; W: g' ~+ v) I公仔箱論壇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,bttvb5 y: r1 ~: l9 q
It is located in the city of Magdeburg, near Berlin.tvb now,tvbnow,bttvb0 R; }) \+ P6 t
& b5 h" x# G/ q8 L" x) Ttvb now,tvbnow,bttvbThe photo was taken on the day of inauguration.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。) y3 ~5 Q' Y* w; |8 s
To those who appreciate engineering projects, here's a puzzle for you armchair engineers and physicists.
5 X6 P, A c) b* n' p
6 s1 m! g8 s0 J& IQuestion:tvb now,tvbnow,bttvb6 P% k! I) k5 X4 g+ L6 |' \
tvb now,tvbnow,bttvb# `3 u; p7 D$ a% W" o' L
Did that bridge have to be designed to withstand the additional weight of ship and barge traffic,tvb now,tvbnow,bttvb/ d$ w; L0 D/ @* U( o7 P) k
Or just the weight of the water?
, v, `0 X% n8 f5.39.217.76tvb now,tvbnow,bttvb7 V( h: V: _- n: ?" b& e
Answer:
. W; X' [8 K% v6 C& Htvb now,tvbnow,bttvb
1 I1 |0 q7 _& R! p' `It only needs to be designed to withstand the weight of the water! 9 o: F5 i& Y8 [
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
7 c) Q) }1 T$ W1 z7 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。
0 p J; K+ |* v% I6 v5 ~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" Y% g8 l- X3 _1 r
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。# F- `: o: ~1 s6 K+ W% @3 G! b
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.
) W5 b+ `2 ~9 Q* T5 R9 I7 qThe 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. 1 c R" e$ q. c T" d# @7 N) w& p
5.39.217.76( o* v- [% O5 g3 v3 K
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.
0 a+ O; c4 {! Z. H0 o8 X, ]+ Ptvb now,tvbnow,bttvb公仔箱論壇. L2 x O0 A5 W( o& o
5.39.217.768 ?) _, C' u- K* d# y( }& ~, c
0 L0 U6 c3 y- Z. R9 f+ B1 E公仔箱論壇( z- E, |5 v T0 n
( O4 g7 _8 M6 x! v" O公仔箱論壇5.39.217.769 m( J( }, N% q8 g
4 s& R- o. {% H; zTVBNOW 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。5.39.217.76, b# e8 ?5 t! \. g- [/ T, i
5.39.217.76, Q1 d# ^6 t6 [
|
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
|