회전익 정지상태로 이륙하는 헬리콥터. The astonishing 'magic helicopter' that appears to fly without using its rotors: VIDEO

The astonishing 'magic helicopter' that appears to fly without using its rotors (but it's just an optical illusion)

Video shows helicopter lifting off the pad while its rotors appear to stay still

The phenomenon boils down to the camera’s shutter speed and frame rate

When frame rate synchronizes with rotation, spinning objects appear still

부유 부두에서 이륙하는 헬리콥터.

그런데 회전익이 움직이지 않는다.

왜 그럴까?

이 현상은 카메라의 셔터 속도와 초당 프레임 수로 귀결된다.

프레임률이 회전과 동시에 나타날 때 회전 물체는 그대로 나타나게 된다.

황기철 콘페이퍼 에디터

Ki Chul Hwang, conpaper editor

kcontents

A bizarre video shared on YouTube today appears to show a helicopter hovering ‘magically’ above the pad, climbing higher and higher as its blades remain almost completely still. But, all is not as it seems. The strange phenomenon boils down to the camera’s shutter speed and frame rate, which can distort the appearance of spinning objects when synchronized.

http://www.dailymail.co.uk/sciencetech/article-4280208/Magic-helicopter-appears-fly-without-using-rotors.html

kcontents

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