本帖最後由 lilitan008 於 2011-10-3 12:57 PM 編輯
# q9 U2 X7 O+ ^ V& B
7 O1 I/ G8 \7 V' aIf you are not a Physics person, read on and learn a fact of physics.
% M: \0 ]& t+ d( G8 \, U公仔箱論壇AMAZING!
8 N9 c4 |$ ~+ P, {) u0 H1 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。
* @2 w( _) z/ r5 p' M! j* I0 K8 A MEven after you see it, it is still hard to believe!" A. C* B0 T, W7 k: F
6 V4 Q# p" h' Q: \. f; ~5.39.217.77TVBNOW 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 i. I) c& o# o. \0 T1 T. x# d
Magdeburg Water Bridge in Germany What a feat! Six years, 500 million euros, 918 meters long. Now this is engineering!
3 p& m7 Y; D( A W- [tvb now,tvbnow,bttvbThis is a channel-bridge over the River Elbe and joins the former East and West Germany as part of the unification project. 5 u Y$ j$ [8 Q# N
It is located in the city of Magdeburg, near Berlin.
5 w4 ~! [2 M" y1 C
$ s. L. x: G S% q. e( `5.39.217.77The photo was taken on the day of inauguration.tvb now,tvbnow,bttvb; y3 L1 Y+ F: K% _) v
To those who appreciate engineering projects, here's a puzzle for you armchair engineers and physicists.
3 \% X, S3 ?! A9 N9 f: l& R公仔箱論壇
' V! m! U. |7 N" f4 l! f2 _5 V5.39.217.77Question: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。. y% z) V5 ?8 U( ]. B; Z9 u
tvb now,tvbnow,bttvb Q0 D7 f) c; `$ @& j
Did that bridge have to be designed to withstand the additional weight of ship and barge traffic,5.39.217.775 ~4 Y: P1 | [/ b7 U+ u$ k
Or just the weight of the water? 2 e! L o: X4 w! f' j2 a H2 ]) _( L
: _# m7 h1 F, o& x6 D* q. U
Answer:5 h; v7 r) |* }
$ G; W5 V) O1 l
It only needs to be designed to withstand the weight of the water!
& b- Y4 r1 c4 W3 V) i公仔箱論壇Why? A ship always displaces an amount of water that weighs the same as the ship, regardless of how heavily a ship may be loadedTVBNOW 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。+ Q9 j8 n! ?4 c5 | n- u
! h0 g' Y# X6 ITVBNOW 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( O" U, c% \3 n( j% r% R; D
The Incredible Magdeburg Water Bridge in Germany
% k4 O1 f6 p9 A' Q# e) S/ _! }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." J) k; v% h) w8 X# ]: g
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.
) r; J( G" \9 s9 y/ ~7 B' gtvb now,tvbnow,bttvb
6 h2 p5 M! v$ x2 r5.39.217.77Construction 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. $ m _: A9 T+ f3 K
! A9 z, d& @" z% I t
8 }3 ^0 i0 J$ M1 ?
5.39.217.778 D, ^1 S$ e- W: A1 j% B
' @ H5 h. P. S9 [1 t2 ztvb now,tvbnow,bttvb, e$ n k: l, f: G, [9 t
: i2 C* n( A& J; A. t/ F
( w/ v0 _8 q; o) i
* f" u( j. _7 _* z2 S5.39.217.77公仔箱論壇5 u6 I# `. @: c. z+ b z
|