How far can the human eye see?

[platinumike]

i have a few aeguements, 7miles,60 miles,etc. i learned it was 7-10 miles with a lamp light. Google isnt helping,ya'll know?

 

[cjgallen]

Look in the sky, you can see stars millions of lightyears away

 

[IAteYourMother]

I can see the stars... so... yeah.

 

[CheesePoofs]

As far as is possible with the weather conditions. In a blizzard, a few feet. On a perfectly clear day with no interference, really really far. Remember, we can see stars, so I think 7-60 miles is a bit short.

 

[Crusty]

You suck at linking.

 

[platinumike]

well stars are huge. Im talking about any object under the size of 1,000 yards

 

[Kadarin]

Your eye is not an active sensing device that has a specific range. It is, rather, passive in that it is just essentially a lens that focuses light onto the retina, which has photoreceptors.

 

[ribbon13]

Originally posted by: MCrusty
You suck at linking.

Indeed he does ->

[%=text]URL[/%]

replace % with L for http, S for https, and F for ftp

 

[HappyPuppy]

Originally posted by: cjgallen
Look in the sky, you can see stars millions of lightyears away

No you can't. You are seeing light that left those stars millions of years ago and just reached your eyes.

 

[dighn]

it'd probably make more sense to include the size of object with the distance

 

[Crusty]

Originally posted by: HappyPuppy

Originally posted by: cjgallen
Look in the sky, you can see stars millions of lightyears away

No you can't. You are seeing light that left those stars millions of years ago and just reached your eyes.

When you look at your monitor you are just seeing the light that it produces and is reflected off all of the surfaces of it.

 

[akodi]

if your eyes are perfect they should have a far point of infinity and a near point of 25 cm.

 

[xSkyDrAx]

you could see things...probably cant tell what they are unless they're really huge.

 

[Hayabusa Rider]

The resolution limit of the human eye is roughly 1/60 of a degree. It should be realitivly easy using trigonometry to determine how far a thousand yard object would have to be to subtend that angle.

 

[phisrow]

Something of a meaningless question, really. I've seen the one mile figure for a bright LED light(on an otherwise perfectly dark night), a Xenon flash would probably be a lot farther. A decent sized star, of course, can be seen at some millions of light years. A perfectly coherent laser, if such a thing existed, would probably have a near infinite range.

The only values we can really ascribe to the eye are spectral sensitivity (See this and <a target=_blank class=ftalternatingbarlinklarge href="http://www.gigahertz-optik.com/database_en/html/applications-tutorials/
utorials/ii.-properties-and-concepts-of-light-and-color/ii.6.-spectral-sensitiv
ty-of-the-human-eye.html">This</a>) and resolving power (Here, among other places

All the rest just depends on the size, brightness, and spectral makeup of the light source.

 

[Savij]

The question isn't how far you can see, it's what resolution you can perceive. As an object gets farther away from you, it takes ahigher resolution to be able to discern it from the background. In addition, it changes with the lighting conditions and how fast the object is moving across the field of view.

edit: What he said

The resolution limit of the human eye is roughly 1/60 of a degree. It should be realitivly easy using trigonometry to determine how far a thousand yard object would have to be to subtend that angle.

 

[Zim Hosein]

I suppose it depends on where you live since I can see you platinumike and you should really take off that lingerie

 

[Kevin1211]

it matters how much light the object you are looking at is reflecting

 

[cerebusPu]

Originally posted by: cjgallen
Look in the sky, you can see stars millions of lightyears away

thats true.

the question needs to have more detail.

 

[drum]

Originally posted by: Zim Hosein
I suppose it depends on where you live since I can see you platinumike and you should really take off that lingerie

you just want to see him nekkid

 

[TitanDiddly]

This is more about how far can a given light travel and still be detectable by the human eye. An infinitely bright source of light can be seen from an infinite distance.

 

[0roo0roo]

depends on the haze

 

[everman]

Given the right conditions, perhaps a great Einstein Ring, you can see many lightyears away.

 

[cerebusPu]

Originally posted by: everman
Given the right conditions, perhaps a great Einstein Ring, you can see many lightyears away.

hahaha..the einstein ring reference is great.

 

[91TTZ]

Originally posted by: platinumike
i have a few aeguements, 7miles,60 miles,etc. i learned it was 7-10 miles with a lamp light. Google isnt helping,ya'll know?

It all depends on how big it is and how bright it is.