Heart-stopping moment for a gasping crowd at Wentworth as they watch two planes on 'collision course' on approach to Heathrow - But Air Traffic Control say it was perfectly safe公仔箱論壇, S2 w& P$ c5 m& A5 m( h1 _: u
By Eddie Wrenn 8 S+ e# y% m, ?) A# U. Qtvb now,tvbnow,bttvb# G" Z5 S" c2 b7 J1 q
At first, everyone was rooted to the golf.5.39.217.76; E. ?( v( q, w9 b8 u2 ^) o
" j, U; o1 {& b* @9 s% \公仔箱論壇But then a murmur went around the crowd at Wentworth golf course, which is under Heathrow's flight path and the scene of the 2012 BMW PGA Championships, and attention turned away from the game and towards a drama unfolding in the skies above.3 Z c, a! x( M; [1 V7 G' z8 @
. r& o- n* r8 V/ o2 x3 P5 B% d9 F: PTwo planes were flying overhead - and they seemed to be on a fatal collision course.tvb now,tvbnow,bttvb8 z. m9 L$ r: X# b1 ~
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A gasp went round the stands as the hundreds of spectators watched the larger plane catch up with the smaller one, and the observers took a collective breath as they watched the seemingly inevitable events unfold.tvb now,tvbnow,bttvb' y$ B% V6 x) r2 |! z" v
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。( e' z- m7 w5 r) b
But the only victims here were the golf spectators, who by chance happened to be perfectly placed for a unique optical illusion.tvb now,tvbnow,bttvb& }: _' B. p& T6 M2 { w, g a9 D
& I* L/ @- X; |3 K2 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。 . P, F1 N+ a) m) Y公仔箱論壇Those planes look close: As the Wentworth golf spectators look up, tension begins to mount as the 'larger' plane begins to catch up with the smaller one # y# \3 O8 G+ G5 Jtvb now,tvbnow,bttvbTVBNOW 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。% m1 P5 [0 K2 k& b 8 \/ [+ f! v" d5.39.217.76As the planes came together, the crowd diverted their attention and watched nervously for catastrophe ( s$ S4 t& I. Z1 ytvb now,tvbnow,bttvb + C8 f- Y+ @' W9 a1 [/ D; q5.39.217.76 公仔箱論壇( a9 \; A, |% Y5 J `
There were gasps from the galleries as the planes approached each other and a crash seemed imminent公仔箱論壇7 J8 p7 n0 K. Z7 |1 s4 Y9 s% k" O
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Moment of 'impact': As the crowd squeezed their collective eyes shut, the planes hit - and the illusion is broken - U& q/ i7 I; I! B8 ?9 l5.39.217.76 6 H2 g- u" o; G" i% U) `+ o y& Q2 P) _) `4 d$ y
...And the planes separate, perfectly safe all along, and the crowds realise they had been fooled by an optical illusion - and the golf can continue " w2 F7 j& d4 p, V, rTVBNOW 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。公仔箱論壇( E: e1 s' M& t1 P% l4 Y
Suddenly, the planes merged - and the penny dropped. For what the crowd was taking part in was a unique mass-optical illusion.' `* @" B. ?; Q
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The planes - despite seeming to touch for the ground-based observers - were in fact thousands of feet apart, taking part in a process named as 'stacking' as they waited in line to descend into Heathrow.* y B% i" d Z8 v2 o- |
The London airport is one of the world's busiest, with more than 1,300 flights arriving or leaving each day, and air traffic controllers organise the planes into the stacking procedure. & m0 G/ m5 E5 O! E5 Y 6 a+ |( P5 X9 ?, `+ itvb now,tvbnow,bttvbNaturally, the 'bigger plane' is much closer to the camera, and likely to be a mile or two away from the the 'smaller' plane up above.5.39.217.76& [9 P0 ?+ {& u: j( q' t
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A spokesman for the Air Traffic Control at Heathrow said: 'We do hear reports of these from time to time - especially in the summer when it is a perfectly clear day and there are no visual reference points, making it appear that two planes are close.公仔箱論壇% g- t- ^! {, I
0 p+ c4 h$ N3 Y+ G: f7 N5.39.217.76'However at all times, planes are are kept five horizontal miles apart and a least 1,000 feet vertically, and this is monitored by both pilots and radar, so even when it looks like the planes are close, there is no danger.' + p$ E% [, o' V) ctvb now,tvbnow,bttvb' G& g6 ?% X* p/ N1 V0 C; O
So this can be a common enough optical illusion if you live under a flight-path. 0 Z O9 P9 Y6 ]. D0 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。5.39.217.76/ C$ z s; [; j F/ `( ?% [
But for a group of spectators on a sunny Saturday, it was a heart-stopping few seconds which they are sure to never forget. ( o# [! n U9 b& L6 G5.39.217.76 0 l$ Z0 \& p, @9 E+ N 6 |/ ]$ a, [9 U8 c+ o2 I
Stacking explained: Planes join a queue, always at least 1,000 feet apart vertically-wise and with a five-mile gap horizontally, when waiting for a runway ! r& e4 a/ O1 D2 y1 W7 N4 Z5.39.217.76 0 Y* B2 ?; B( R; H5.39.217.76 $ N& E9 C5 k9 q3 L/ a( SPerfectly placed: The crowd were in prime position for the action - unfurling at both ground level and in the skies above作者: tyktyk22000 時間: 2012-5-30 01:45 PM 標題: 上空現撞機疑雲原來是肉眼錯覺
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