Can our eyesight framerate capability be improved through reverse magnification?

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Discussion Overview

The discussion explores the concept of improving human eyesight capability to perceive high-speed objects through the use of a large magnifying lens positioned in reverse. Participants consider whether this optical approach could allow for better tracking of fast-moving objects by altering their perceived speed and angular displacement.

Discussion Character

  • Exploratory
  • Technical explanation
  • Conceptual clarification
  • Debate/contested

Main Points Raised

  • One participant proposes using a large lens to magnify the image of a fast-moving object, suggesting that it could allow for better perception of its motion by reducing its apparent speed.
  • Another participant clarifies that the concept relates to angular displacement and speed, indicating that reducing angular displacement could make it easier to track objects.
  • A different viewpoint suggests that simply moving away from the object might achieve the same effect without the need for complex optics.
  • One participant notes that there are limits to human perception, stating that while optics can enhance tracking, they cannot change the inherent rate of change perceived by the eye.
  • A later reply mentions the potential use of high-speed photography as a method to study fast-moving objects, implying an alternative approach to the original idea.

Areas of Agreement / Disagreement

Participants express varying opinions on the feasibility and practicality of the proposed optical method. While some agree on the potential benefits of altering perception through optics, others suggest simpler alternatives or highlight limitations, indicating that the discussion remains unresolved.

Contextual Notes

Participants acknowledge potential scientific flaws in the initial proposal and discuss the limitations of human perception and the effectiveness of optical solutions without reaching a consensus on the original idea's viability.

ralph17
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Hi.Non-physics student posting here for first time purely out of curiosity. I was wondering if we could improve our ability to percieve high speed objects which move to fast to see, by, for want of a better phrase, using a big magnifying glass backwards. For instance, if a car moves down a 500 metre racetrack in say 1 second. If you were to get a huge glass lense (or glass block may be the right word), which is 500 metres wide next to the track but narrows down horizontally to 5 metres at the point where one is standing. if it is possible to treat the image on the glass as a separately percievable entity, would you see a much smaller car traveling over a 5 metre stretch in the same amount of time, thereby traveling at 1% of the speed, therby allowing us to accurately percieve its motion.

I know there may be several scientific flaws in the above paragraph, but i need help in identifying or confirming whether this is an actual possibility/ occurrence.

I'm not even sure if its possible to have a glass block which performs such a function but i got the idea from turning a magnifying glass around, which makes the object seem smaller.

At first i thought that as it is a smaller object it would travel the distance proportionately, therefore making the speeds the same, however if you were to concentrate on one point, this would simply only have to travel a hundreth of the distance of the original car, in the smae amount of time.

If this were true, does it/ would it have implications in studying any other kinds of fast moving objects in the science?

Moderators: I am relatively new at using forums and understand this post may be in the wrong place as I was not sure what type of scientific category it fell into, therefore please move it to a more suitable place if necessary.
 
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Welcome to PF.

You seem to be describing angular displacement/speed: the angle through which an object moves across your field of view in a given time. Yes, if you reduce the angular displacement/speed by "zooming-out" on an object, it will be easier to see/track with your eyes.
 
Thanks. Your reply summed it up in a much clearer manner.
 
to explain this in easy terms:

why not just back away from what your viewing, saves a lot of work in terms of moving that huge piece of glass as well as the figuring (grinding/polishing) of it to produce a usable image
 
@ rdiiorio: yeah, after the first reply I started to think about it like that, I realized that what I was asking was actually a much simpler question than I first thought.
 
There is a limit. The optical/neural construction of the human eye can perceive "changes" only to a certain degree.
However, if, through optics, the field-of-view is made larger and the fast moving target smaller, the limit stays the same but can have "tracking" advantageous.
In all cases, passive optics WILL NOT CHANGE the human eye's rate of change itself.
 
with a bit more thought on the subject, yes with the aid of high speed photography.
 

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