Why does it look like this plane is floating in the distance?

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SUMMARY

The discussion centers on the optical illusion experienced when observing a plane flying in the distance, which can appear to be floating. This phenomenon occurs due to the relative motion of nearby and distant objects, where the plane, traveling southeast while the observer bikes north, aligns with a point where distant objects seem stationary. The absence of nearby reference points, such as trees or clouds, enhances this illusion, making it more pronounced with aircraft compared to other scenery. Understanding this effect can enrich one’s appreciation of visual perception in open terrains.

PREREQUISITES
  • Understanding of optical illusions
  • Basic knowledge of relative motion
  • Familiarity with visual perception concepts
  • Awareness of environmental context in observations
NEXT STEPS
  • Research the physics of optical illusions
  • Explore the concept of relative motion in visual perception
  • Study the effects of distance on perception of speed
  • Investigate how environmental factors influence visual experiences
USEFUL FOR

This discussion is beneficial for educators, psychology students, and anyone interested in the science of perception and optical illusions, particularly in relation to movement and distance in visual contexts.

sherzod
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I was biking the other day and saw a plane flying in the distance. It was a weird illusion where it looked like it was floating. Let's say i was going North and plane was going South East also the plane was on the right side, straight ahead.
 
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Things that are far away look slow for the same reason they look small. When there is a third object (trees, clounds) that stays in line with you and the observed object, it looks like the observed object isn't moving..
 
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sherzod said:
I was biking the other day and saw a plane flying in the distance. It was a weird illusion where it looked like it was floating. Let's say i was going North and plane was going South East also the plane was on the right side, straight ahead.

This optical illusion happens all the time with scenery; there we're so accustomed to it that it doesn't surprise us.

Next time you're riding down a road in reasonably open terrain (so that you can see objects near, distant, and in between) look to the side. You'll "see" that near objects (trees by the road) are moving backwards past you, distant objects (mountains on the horizon) are moving with you, and somewhere in between there's a point where objects seem to be fixed in place. Your airplane just happened to be at that point. The illusion is much more startling with an airplane because there are no other objects nearby that we can relate its position to.
 

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