本帖最後由 lilitan008 於 2011-10-3 12:57 PM 編輯
" |& o3 K3 P+ W+ g6 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。tvb now,tvbnow,bttvb$ F/ n1 V9 s% D5 j! B3 E8 x
If you are not a Physics person, read on and learn a fact of physics.
2 O9 c5 C7 b) ^3 l A7 H* O) ?0 s5.39.217.76AMAZING! ' }: i0 ^8 f1 \6 A. U+ |
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! X/ U( o( K, \
Even after you see it, it is still hard to believe!
" V4 z4 M2 n) E4 }9 m
) r& w8 ~' z0 G, Z8 j& }, C( b, T q+ T, Q+ M5 L6 ^/ W
Magdeburg Water Bridge in Germany What a feat! Six years, 500 million euros, 918 meters long. Now this is engineering! % K3 ~' M B" `9 s9 F
This is a channel-bridge over the River Elbe and joins the former East and West Germany as part of the unification project.
% e7 a" h: {3 [0 L公仔箱論壇It is located in the city of Magdeburg, near Berlin./ }6 M+ a9 R4 W
公仔箱論壇; R, I9 p1 E3 x6 `+ `5 K
The photo was taken on the day of inauguration.
1 Y. [& ?# E" ~. sTo those who appreciate engineering projects, here's a puzzle for you armchair engineers and physicists.& T3 n5 |" o3 i2 R$ }2 d D9 x
; K2 [7 A4 S6 x% y" J# q _5 \Question:
/ u; |5 V i$ ^ `1 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。- `2 |1 U* S3 [0 n H8 s
Did that bridge have to be designed to withstand the additional weight of ship and barge traffic,7 S% K$ d7 U) }% i; W0 d
Or just the weight of the water? 公仔箱論壇7 g4 _, o! `" ~ [( t5 I
; p4 ~5 J; m: i/ n' a- U& r( U6 K
Answer:
6 I, U+ l# d1 D6 t3 X5.39.217.76
/ @4 o0 W8 F6 ztvb now,tvbnow,bttvbIt only needs to be designed to withstand the weight of the water! tvb now,tvbnow,bttvb5 f8 c; D- P9 u6 R
Why? A ship always displaces an amount of water that weighs the same as the ship, regardless of how heavily a ship may be loaded5.39.217.76# w9 g1 j- o$ z$ l, I: _1 T$ q
7 j4 i4 n+ S* o& X8 L3 S u, z
& g8 P! |) K" N: D5 E6 k
The Incredible Magdeburg Water Bridge in Germany
0 F* k0 `9 X y/ k8 w公仔箱論壇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.
5 J" I. @ t" G2 P* Q: E# j, X1 \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。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. 5.39.217.76' x: h+ [( h$ ]7 }" q# E/ R: ]& V
5.39.217.76, b5 N9 r1 t5 j5 ]0 b/ y
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. 5.39.217.76; y: {! ]: h( s* k1 {/ i2 j7 l8 v0 Z u
/ l2 E; L+ O# E" ~6 Z
% Z- b" L5 E: Y& y5 s5 p公仔箱論壇3 B% O; l' @3 T3 x w' B* ` z
1 Z. R* t# w, c- g' g4 BTVBNOW 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 c7 a; H- v; \% R- R, e. B! b9 x+ l
tvb now,tvbnow,bttvb8 B: y* F+ [4 L" K- `: J. l' }) e
5.39.217.760 T* k6 E+ B* y- Y$ [- C. D
5.39.217.760 K: }! G) Z) g. M* ?5 e
2 M( j3 U, j) x# \' E) Z7 {公仔箱論壇 |
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
|