Most
of you likely have observed the wagon-wheel illusion in real life. It is an optical illusion in which a wheel
with spokes appears to rotate differently from its actual rotation. If
you’ve not observed this, I like the example and explanation provided at the
link below. Reportedly, the illusion was first
noted during the playback of old movie films in which the wheels of a
forward-moving vehicle appear to slow down or even roll backwards. Some have
noticed this in recordings of helicopter rotors and aircraft propellers. The effect is said to be a result of
temporal aliasing. It can also often be seen when a rotating wheel is
illuminated by flickering light. These forms of the effect are known as
stroboscopic; the original smooth rotation of the wheel is visible only
intermittently.
Subscribe to:
Post Comments (Atom)
Posts
No comments:
Post a Comment