steve_bank
Diabetic retinopathy and poor eyesight. Typos ...
you’re still not getting it. This does not violate physics. Light travels but if he's correct, and the eyes are efferent, not afferent, then the light from the object, regardless of how far away it is, is at the eye the second the object is seen, that is, if it is within the person's field of view. There is no gap between the light at the eye and the object seen, which would violate physics.
Just learned two new words, efferent and afferent. Peacegirl is mixing sinence and philosophical terms lacking the science.
Yes it is an apparent violation.
Modern model based sicjence is about causality and causal chaikns. Where effect can not precede cause and effect occurs after a delay.
Tap one end of a metal rod with a hammer and there is a time delay before the effect reaches the other end.
Swtich on a flashlight and it takes tine for the light to reach and reflect off a rock and reach the eye lens. Models describe how the light gravel form flashlight to rock, how refection occurs, how the reflected light passes through the lens, how the retinaa reacts to the light, and how the the retina response is transmitted to the brain.
At each stage there is a finite time delay. There is a delay between the time the light reaches the photo receptors to change state.
The retina's time response, or how quickly it reacts to light, varies across its different parts and cells. While the fovea, responsible for sharp central vision, has a slower response time compared to the periphery, this slower response may enhance the reliability of visual information. Different types of retinal ganglion cells (RGCs) also exhibit varying response latencies, which are influenced by the retinal circuitry
Look at an object at rest. If the object moves it takes time for you to perceive the change in position. Perception can not be instantaneous. When light arrives at the eye it take time for human brain to reprieve.
When you wtach video the display presents a series of still pictures. The slow response time of the eye makes it seem like continuous motion.
In fact the 50-60 hertz mains frequencies were in part selected to avoid perceiving the lightss as flickering.
The human eye can perceive flickering lights, but the frequency at which flicker becomes imperceptible varies. Generally, humans can detect flicker up to about 50-60 Hz, and some individuals may perceive it up to 90-100 Hz. However, some studies suggest that flicker can be perceived at higher frequencies, even up to 500 Hz, especially when there are spatial edges or rapid eye movements according to Nature and Admesy.
Visual perception is a comlex topic.