本帖最後由 lilitan008 於 2011-10-3 12:57 PM 編輯
, I7 x2 S. `/ Z: M7 Xtvb now,tvbnow,bttvb
4 r) x; `9 ]4 Y. 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。If you are not a Physics person, read on and learn a fact of physics. tvb now,tvbnow,bttvb" A" b1 q% }9 \' ~9 v' P: ?
AMAZING!
* L8 Q% o1 s4 s0 J( 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。
/ ^- K% [/ K a- g4 JTVBNOW 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!; F3 I$ o, g# O3 [* C) ?' h* S
) T$ Y6 E! a% ~& V3 Ptvb now,tvbnow,bttvb
8 l. W; c. ?( w: NMagdeburg Water Bridge in Germany What a feat! Six years, 500 million euros, 918 meters long. Now this is engineering! 公仔箱論壇' v8 s |- I4 d% J. n6 v, `
This is a channel-bridge over the River Elbe and joins the former East and West Germany as part of the unification project.
( M! B% M. v1 ^/ N8 m4 I/ rtvb now,tvbnow,bttvbIt is located in the city of Magdeburg, near Berlin.
$ [1 w6 W7 g( ?3 f/ q! d) ]+ w c公仔箱論壇; A; @! {+ ], T9 f1 p& t8 c
The photo was taken on the day of inauguration.
/ L8 w% n$ Z% xTVBNOW 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.5 g+ Q6 W5 K9 `1 w4 A
" P H% g ~6 D' n1 ]/ `; f4 i+ VTVBNOW 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。Question:5.39.217.77:88987 F5 e# B( u$ u- @
2 h" ~5 W2 n1 {tvb now,tvbnow,bttvbDid that bridge have to be designed to withstand the additional weight of ship and barge traffic,
) d! H+ ]- o! W5.39.217.77:8898Or just the weight of the water? 3 j9 Y0 b( b5 H( v0 j
5.39.217.77:88980 q4 r/ P7 R+ X
Answer:: O/ ?# X$ a' @: t2 S
公仔箱論壇+ O! B# G' A# c |* Q5 i: x
It only needs to be designed to withstand the weight of the water!
9 t5 W8 i' K6 v3 d. q, ~9 G+ qWhy? A ship always displaces an amount of water that weighs the same as the ship, regardless of how heavily a ship may be loaded3 P$ w" Z8 l T7 _
tvb now,tvbnow,bttvb2 ^$ @) s) c0 ]
公仔箱論壇% F( u9 T4 R+ ~1 |) k/ U+ f
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。, y ]' E8 {) a4 E k
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.! s( ~- B# t4 {9 @7 {9 B8 y/ D& h( I
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. ]. C4 {) `8 G1 ?* U- n" h
( K+ t) }0 B+ v) z: ]
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. " b; j5 I% O- O2 v' R1 G% @
0 x1 g) A" g, o; B F
5.39.217.77:88986 D, g3 ^, |( C+ U
5.39.217.77:88981 O! |/ c+ t; U+ }% c% l" {
+ S# q! m5 z# b7 ]7 ^tvb now,tvbnow,bttvb
1 Z+ F+ P" D8 q! X! j
# [8 N3 a# y' Z6 z% |% z
. d0 w) j" P! P/ y9 }& ctvb now,tvbnow,bttvb
) u% P: h; q( s9 Ftvb now,tvbnow,bttvbtvb now,tvbnow,bttvb& s! k3 ^/ ?2 m7 A2 |
|
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
|