how many feet per second a human eyes can intercept?what living things are the best for intercepting using their eyes in a high speed?
2006-07-20 07:21:57 · 13 answers · asked by Anonymous in Science & Mathematics ➔ Physics
First question can't be answered--change the size of the object and you'll change the speed at which the human eye can perceive it. The smaller it is, the slower it needs to be moving in order for us to see it. "Seeing" means a photon of light striking your retina--not enough photons reflected to your eye in a given amount of time and you won't see zip.
As to the second question, pretty sure the dragonfly would take the prize. It's ability to resolve speed and velocity to intercept it's prey rivals electronic eyes--or so I've heard.
(Human eyes don't see in frames--that refers to how fast you have to flash images so that you don't perceive a gap in motion in a film. Think about it--a bullet fired out of a .38 special moves at about 400mph. You can't see it regardless of how close or far away it is. An F-18 Hornet can fly almost 3 times that fast (1,180 mph)--you can see it even in a limited field of view at close range.)
2006-07-20 10:41:23 · answer #1 · answered by Pepper 4 · 0⤊ 0⤋
The human eye "refresh rate" is about 30 Hz, that is, our brains register what our eyes see about 30 times a second. For something to go too fast to register, it would need to enter and leave your field of vision in less than 1/30th of a second. So the answer really depends on how wide your field of view is. Something could pass by a 1 foot window at 30 ft/s and not be seen, but if you were outside you'd see it.
2006-07-20 15:00:33 · answer #2 · answered by Paul 3 · 0⤊ 0⤋
Human eyes can intercept up to 60+ fps.
The eagle maybe
2006-07-20 14:55:48 · answer #3 · answered by Sandra♥ 5 · 0⤊ 0⤋
Humans actually perceive slowly, camparatively.. long story but we get caught up in our minds. Our imagination tries to fix things and make them make sense causing us to be slowed down. Fastest would probably be something like a fly, for it has many eyes and small brains that forget instantly. With no storage space or distance to travel perception to them is in a instant and then gone. *poof*
Also you can consider the cave bat, they use sonar-like perception detecting their enviornment without sight which is also very fast, they skip an entire process. Now that's keen.
2006-07-20 14:30:17 · answer #4 · answered by ju-ju bean 2 · 0⤊ 0⤋
The human eye can see 60 frames per second. If the object passes through one's field of vision within 1/60th of a second, it simply cannot be seen.
But your question can't really be answered unless you provide what your field of vision is...a football stadium or a cramped closet?
2006-07-20 14:52:15 · answer #5 · answered by elctropro 2 · 0⤊ 0⤋
eagle for the best eyesight, they can spot a mouse 3 miles away from a few hundred feet in the air..
your vision narrow the faster you go, reports are at mach 4 or 5. somewhere between, your vision is too narrow to make out the cockpit in front of you.
2006-07-20 14:26:30 · answer #6 · answered by digital genius 6 · 0⤊ 0⤋
I would say that since a cheetah has the top speed of any land animal, that it's eyesight would have to be the best at high speeds.
2006-07-20 14:24:26 · answer #7 · answered by Collin R 4 · 0⤊ 0⤋
We can see light and light is travelling at the speed of light which is about 300000000 m/s. We can travel in space shuttle at 8000 m/s and maneuver it to dock with space station. I say human being is the best.
2006-07-20 14:31:32 · answer #8 · answered by galactic_man_of_leisure 4 · 0⤊ 0⤋
Doesn't the best answer always get 10 pts... So your question is nothing special, and you pointing that out was simply redundant.
2006-07-20 14:25:12 · answer #9 · answered by mrcone 3 · 0⤊ 0⤋
It depends on the distance to the object, of course!
An eagle has excellent eyes and enough distance to the objects viewed...
2006-07-20 14:26:23 · answer #10 · answered by swissnick 7 · 0⤊ 0⤋