An example of how the eye does not work.

  • 19 Replies
  • 4699 Views
*

dephelis

  • 479
  • Sine scientia ars nihil est.
An example of how the eye does not work.
« on: January 30, 2015, 09:00:03 AM »
I face-palmed when I saw Scepti's description of how an eye works in this thread: http://www.theflatearthsociety.org/forum/index.php?topic=62717.msg1655277

Here is a diagram of the human eye:


Let's work through his post to highlight where he is wrong and maybe help prevent someone else making the same mistake.
Think about the shape of your eye and think about how it views things. Your eye is concave. It's not a flat eye.
The light to your eye is going to differ over distance.

The shape of the eye has no bearing on the distance the light has travelled. It passively collects whatever light is available to it.

Quote
Stand on the beach and look out to sea. You may not be conscious of this but you can see the beach even though you're looking at a ship out to sea. Why?
Because your eye is concave. It views from all angles.

While the retina can be described as a concave surface, light is actually collected and focused by the cornea and the lens at the front of the eye. The outward (light source facing surfaces) of these two parts of the eye are both convex. The shape of the cornea is especially responsible for giving us the 170° field of view.

Quote
So if you're looking directly ahead the ight is hitting to top of your concave pupil and less so at the bottom of anything you are viewing, especially the further away it gets.

The pupil is not concave, in fact it is not anything at all. The pupil is the hole in the centre of the iris.

Quote
So thinking on that, your eye loses the hull of a ship because the bottom is only taking the light in from the reflection so far out. Basically you drop into the sea which becomes your horizon line.
It doesn't change at the sides because your eyes are still wide angled, taking in the light either side. The top part of your concave eye, catches the top of the ship/mast because it still reflects the light.

No the light gathers all light available to it. Eyes do not take in more light on the sides than any other direction.

Quote
If you notice with your pupil, it acts like a telescope as well. It widens to take in as much light as possible when the light becomes dull and when it's bright, it shrinks to focus.

Wholly incorrect. The pupil, or rather the iris, contracts or expands to allow more or less light in thereby adjusting exposure (equivalent of a camera's aperture stop), this has no effect on focus whatsoever.

Focus, in the eye, is provided predominantly by the cornea (around 70%) and refined by contraction or expansion of the lens independently of the iris.

Quote
Your eyes are just shit telescopes.

This is true.

*

sceptimatic

  • Flat Earth Scientist
  • 28335
Re: An example of how the eye does not work.
« Reply #1 on: January 30, 2015, 09:16:38 AM »
You didn't cover my thoughts properly. Never mind, this is normal.

*

dephelis

  • 479
  • Sine scientia ars nihil est.
Re: An example of how the eye does not work.
« Reply #2 on: January 30, 2015, 09:20:29 AM »
You didn't cover my thoughts properly. Never mind, this is normal.

Sorry Scepti, your thoughts are not privy to me. I can only cover what you write.

*

sceptimatic

  • Flat Earth Scientist
  • 28335
Re: An example of how the eye does not work.
« Reply #3 on: January 30, 2015, 09:35:13 AM »
You didn't cover my thoughts properly. Never mind, this is normal.

Sorry Scepti, your thoughts are not privy to me. I can only cover what you write.
Well don't bother unless you grasp what's being said.

*

dephelis

  • 479
  • Sine scientia ars nihil est.
Re: An example of how the eye does not work.
« Reply #4 on: January 30, 2015, 09:39:25 AM »
You didn't cover my thoughts properly. Never mind, this is normal.

Sorry Scepti, your thoughts are not privy to me. I can only cover what you write.
Well don't bother unless you grasp what's being said.
It is not possible to grasp the meaning when all the facts, bar one, are wrong.

*

sceptimatic

  • Flat Earth Scientist
  • 28335
Re: An example of how the eye does not work.
« Reply #5 on: January 30, 2015, 10:03:52 AM »
You didn't cover my thoughts properly. Never mind, this is normal.

Sorry Scepti, your thoughts are not privy to me. I can only cover what you write.
Well don't bother unless you grasp what's being said.
It is not possible to grasp the meaning when all the facts, bar one, are wrong.
I admit I didn't explain the full workings of the eye but then again that wasn't the purpose. Just the telscopic abilities of it, or lack of them.
It's about light hitting parts of it at varying angles and about which part recieves more light in certain circumstances, not least, distance.


*

Orifiel

  • 226
  • Stalwart Pumpkin god supporter
Re: An example of how the eye does not work.
« Reply #6 on: January 30, 2015, 11:30:32 AM »
You didn't cover my thoughts properly. Never mind, this is normal.

Sorry Scepti, your thoughts are not privy to me. I can only cover what you write.
Well don't bother unless you grasp what's being said.
It is not possible to grasp the meaning when all the facts, bar one, are wrong.
I admit I didn't explain the full workings of the eye but then again that wasn't the purpose. Just the telscopic abilities of it, or lack of them.
It's about light hitting parts of it at varying angles and about which part recieves more light in certain circumstances, not least, distance.

That wouldn't create a bend though? It would just make a shadow...
Je parle Français and yes, I am une fille

Pumpkin god 4 lyf

*

mikeman7918

  • 5431
  • Round Earther
Re: An example of how the eye does not work.
« Reply #7 on: January 30, 2015, 11:52:49 AM »
You didn't cover my thoughts properly. Never mind, this is normal.

Sorry Scepti, your thoughts are not privy to me. I can only cover what you write.
Well don't bother unless you grasp what's being said.
It is not possible to grasp the meaning when all the facts, bar one, are wrong.
I admit I didn't explain the full workings of the eye but then again that wasn't the purpose. Just the telscopic abilities of it, or lack of them.
It's about light hitting parts of it at varying angles and about which part recieves more light in certain circumstances, not least, distance.

But that does not explain why boats disapear bottom first as they get further from you, and if I'm not mistaken that was the point of your post.
I am having a video war with Jeranism.
See the thread about it here.

*

ausGeoff

  • 6091
Re: An example of how the eye does not work.
« Reply #8 on: January 31, 2015, 02:09:54 AM »
I face-palmed when I saw Scepti's description of how an eye works in this thread: http://www.theflatearthsociety.org/forum/index.php?topic=62717.msg1655277
I must admit that I could barely believe the guy was serious reading through that posting of sceptimatic's.  How is it possible for an adult in the 21st century to not have even the vaguest idea of how the human eye gathers light?  And this is the guy who constantly uses refraction, perspective, reflection, and optical "theory" in his arguments.  Even a teenaged high school science student understands how the eye works.

He also says:  "I admit I didn't explain the full workings of the eye...".  In actuality, the bit he did allegedly "explain" was so far from the actuality it caused me to spit coffee over my keyboard.  Thanks sceptimatic.

It never ceases to amaze me that for a guy who's authored a dozen books (as yet unnamed) and who possesses thirteen academic qualifications (also as yet unnamed) and is an acknowledged researcher, scientist and genius with a Mensa IQ and who holds numerous world-wide patents can't grasp such a relatively simple concept such as human vision.

Or is sceptimatic—as I've suggested in the past—simply an inveterate liar?

*

sceptimatic

  • Flat Earth Scientist
  • 28335
Re: An example of how the eye does not work.
« Reply #9 on: January 31, 2015, 02:24:07 AM »
It's absolutely amazing how the workings of the eye become elementary school standard now. Hahahaha.
You globalists are a laugh, I'll give you that. Experts in everything known to man. All in your brain. Never having to look things up because you recall it all from your elementary school lessons.

Keep it up, it's at least a laugh. ;D

*

Rama Set

  • 6877
  • I am also an engineer
Re: An example of how the eye does not work.
« Reply #10 on: January 31, 2015, 05:04:29 AM »
It's absolutely amazing how the workings of the eye become elementary school standard now.

High School, not elementary school.

Quote
Hahahaha.

Hahahaha!

Quote
You globalists are a laugh, I'll give you that.

Haha... Wait what?

Quote
Experts in everything known to man. All in your brain.

I don't think you understand the difference between an expert level of knowledge and a basic level of knowledge.  All fairly ironic, since you began with your own explanation of how the eye works.  Doesn't that make you an expert on your own view?

Quote
Never having to look things up because you recall it all from your elementary school lessons.

Again, high school.  What makes you think that everything posted is done from memory?

Quote
Keep it up, it's at least a laugh. ;D

Hahahaha...

Aether is the  characteristic of action or inaction of charged  & noncharged particals.

*

dephelis

  • 479
  • Sine scientia ars nihil est.
Re: An example of how the eye does not work.
« Reply #11 on: January 31, 2015, 09:08:42 AM »
Speaking for myself, most of what I have written is based on my own dissection of bull's eyes from the abattoir in the village I grew up in when I was about 13. I was given a dissection tool kit which used to belong to my aunt when she was at uni.

With a battery, you could stimulate the exposed muscles to contract the iris and lens, providing the eyes weren't too old.

Book learning on the subject at secondary school/high school didn't occur for a couple of years after that iirc.

*

sceptimatic

  • Flat Earth Scientist
  • 28335
Re: An example of how the eye does not work.
« Reply #12 on: January 31, 2015, 10:38:07 AM »
Speaking for myself, most of what I have written is based on my own dissection of bull's eyes from the abattoir in the village I grew up in when I was about 13. I was given a dissection tool kit which used to belong to my aunt when she was at uni.

With a battery, you could stimulate the exposed muscles to contract the iris and lens, providing the eyes weren't too old.

Book learning on the subject at secondary school/high school didn't occur for a couple of years after that iirc.
Well when you start looking at the Earth through those Bull's eyes, let me know. For now, keep looking through your own and try and understand them. Try and understand that they are not capable of telling your brain anything but are a looking glass for your brain to decipher what the hell is going on outside of the enclosed control room inside your skull by use of tehse windows to the world.

When you focus your eyes on a reference point, it's like trying to discard a wide angled telescopic view, because your brain is also aware (through those eyes) of light hitting all parts of that convex eye.
So when you focus on a reference point, you are trying to train your eye like a scope on a sniper rifle. The centre of your crosshair is your primary focus and you gain a sort of tunnel vision whilst concentrating on that.

Your naked eye is looking in ALL directions, even when you're focused on a reference point. It's taking in all light that reflects onto it from all directions.
The sky is lighter than the sea because you can look up with more angle than you can look down.
In the sky your eye takes in more light. Looking out to sea, your eye takes in much less because it's angle on the convext bottom of it hits the sea as you look out whilst your convex top takes in more light from a larger angle of sky.
The centre point of your eye marries them up and you see your horizon.
Anything moving towards that horizon will also transfer the same reflected light to your eye.
The bottom of your convex eye will take in less light as your eye skims the water and more light as the top skims the sky, so anything in that skyline will stand out to your eye as opposed to anything closer to the water. Hence, why the hull of a ship disappears before the mast.

You still have left and right angles that take in light which cancel out as equal light, meaning you don't see any noticeable change in side angles of light towards your eyes.

The whole reason as to why this happens should be clear to anyone in that at sea level, the air is denser on the horizontal than it is on the vertical angle, meaning it's harder for reflected light to reach your eye than it is for reflected light to hit it from a vertical position.

Stop messing about with Bull's eyes. In fact try not to stand around Bull's at all and you have a better than average chance of not reeking of the stuff they deposit out of their back end.
Posting up eye diagrams is similar to all the rest of the stuff you people do and pretend you're experts. Parrots and copy and paste specialists, as well as artists specialising in Bull excrement.

The only difference between you people and a parrot, is, a parrot can be entertaining when mimicking someone's voice or telephone, etc. You people simply mimick text and diagram's. It's not smart. It's not even remotely intelligent and it don't impresser me much.  ;)

*

dephelis

  • 479
  • Sine scientia ars nihil est.
Re: An example of how the eye does not work.
« Reply #13 on: January 31, 2015, 11:20:08 AM »
Speaking for myself, most of what I have written is based on my own dissection of bull's eyes from the abattoir in the village I grew up in when I was about 13. I was given a dissection tool kit which used to belong to my aunt when she was at uni.

With a battery, you could stimulate the exposed muscles to contract the iris and lens, providing the eyes weren't too old.

Book learning on the subject at secondary school/high school didn't occur for a couple of years after that iirc.
Well when you start looking at the Earth through those Bull's eyes, let me know. For now, keep looking through your own and try and understand them. Try and understand that they are not capable of telling your brain anything but are a looking glass for your brain to decipher what the hell is going on outside of the enclosed control room inside your skull by use of tehse windows to the world.

When you focus your eyes on a reference point, it's like trying to discard a wide angled telescopic view, because your brain is also aware (through those eyes) of light hitting all parts of that convex eye.
So when you focus on a reference point, you are trying to train your eye like a scope on a sniper rifle. The centre of your crosshair is your primary focus and you gain a sort of tunnel vision whilst concentrating on that.

Your naked eye is looking in ALL directions, even when you're focused on a reference point. It's taking in all light that reflects onto it from all directions.
The sky is lighter than the sea because you can look up with more angle than you can look down.

Sorry, wrong again. The field of view down is larger than the field of view up, this is due to the brow ridge above the eyes.

Quote
In the sky your eye takes in more light. Looking out to sea, your eye takes in much less because it's angle on the convext bottom of it hits the sea as you look out whilst your convex top takes in more light from a larger angle of sky.
The centre point of your eye marries them up and you see your horizon.
Anything moving towards that horizon will also transfer the same reflected light to your eye.
The bottom of your convex eye will take in less light as your eye skims the water and more light as the top skims the sky, so anything in that skyline will stand out to your eye as opposed to anything closer to the water. Hence, why the hull of a ship disappears before the mast.

All incorrect as your initial premise is wrong, as explained above.

Quote
You still have left and right angles that take in light which cancel out as equal light, meaning you don't see any noticeable change in side angles of light towards your eyes.

The whole reason as to why this happens should be clear to anyone in that at sea level, the air is denser on the horizontal than it is on the vertical angle, meaning it's harder for reflected light to reach your eye than it is for reflected light to hit it from a vertical position.

Stop messing about with Bull's eyes. In fact try not to stand around Bull's at all and you have a better than average chance of not reeking of the stuff they deposit out of their back end.
Posting up eye diagrams is similar to all the rest of the stuff you people do and pretend you're experts. Parrots and copy and paste specialists, as well as artists specialising in Bull excrement.

The only difference between you people and a parrot, is, a parrot can be entertaining when mimicking someone's voice or telephone, etc. You people simply mimick text and diagram's. It's not smart. It's not even remotely intelligent and it don't impresser me much.  ;)

I suggest you try some civility for a change.

?

BJ1234

  • 1931
Re: An example of how the eye does not work.
« Reply #14 on: January 31, 2015, 09:05:45 PM »
I face-palmed when I saw Scepti's description of how ANYTHING WORKS
Fixed that for you ;D

*

ausGeoff

  • 6091
Re: An example of how the eye does not work.
« Reply #15 on: February 01, 2015, 05:20:06 AM »
I face-palmed when I saw Scepti's description of how ANYTHING WORKS
Fixed that for you ;D

Personally, I'm thinking even more firmly that sceptimatic's nothing more than an extremely persistent and irritating troll.

I just can't accept that any reasonably well-educated adult living in the 21st century could be so ill-informed and ignorant about so many things that even high-school kids comprehend with ease.  Which is what leads me to believe that the guy is just playing games with us, and enjoying a bloody good laugh at our expense—as we try in vain to answer his unanswerable questions.

He's obviously lied about so many things on these forums; his 13 academic qualifications; his numerous patents; his Mensa IQ, the dozen books he's authored; his helicopter and private jet; his frequent trips into North Korea under the auspices of their government; his experiment involving a newly-developed laser and a 2km stretch of flat ice; his claims to be a scientist and a genius; his top-secret Antarctic research..... ad nauseam.

   ::)

*

sceptimatic

  • Flat Earth Scientist
  • 28335
Re: An example of how the eye does not work.
« Reply #16 on: February 01, 2015, 05:26:55 AM »
I face-palmed when I saw Scepti's description of how ANYTHING WORKS
Fixed that for you ;D

Personally, I'm thinking even more firmly that sceptimatic's nothing more than an extremely persistent and irritating troll.

I just can't accept that any reasonably well-educated adult living in the 21st century could be so ill-informed and ignorant about so many things that even high-school kids comprehend with ease.  Which is what leads me to believe that the guy is just playing games with us, and enjoying a bloody good laugh at our expense—as we try in vain to answer his unanswerable questions.

He's obviously lied about so many things on these forums; his 13 academic qualifications; his numerous patents; his Mensa IQ, the dozen books he's authored; his helicopter and private jet; his frequent trips into North Korea under the auspices of their government; his experiment involving a newly-developed laser and a 2km stretch of flat ice; his claims to be a scientist and a genius; his top-secret Antarctic research..... ad nauseam.

   ::)
Not an adequate explanation, Geoffrey. It doesn't address what I've said.

*

ausGeoff

  • 6091
Re: An example of how the eye does not work.
« Reply #17 on: February 01, 2015, 06:08:41 AM »
Not an adequate explanation, Geoffrey. It doesn't address what I've said.

LOL..... it's a more-than-adequate "explanation" if you're referring to the content of your posting in Reply #12 above.

It confirms you're simply trolling.

*

sceptimatic

  • Flat Earth Scientist
  • 28335
Re: An example of how the eye does not work.
« Reply #18 on: February 01, 2015, 07:13:48 AM »
Not an adequate explanation, Geoffrey. It doesn't address what I've said.

LOL..... it's a more-than-adequate "explanation" if you're referring to the content of your posting in Reply #12 above.

It confirms you're simply trolling.
Calm down Geoffrey and stop derailing the topic.

*

ausGeoff

  • 6091
Re: An example of how the eye does not work.
« Reply #19 on: February 02, 2015, 12:39:47 AM »
Calm down Geoffrey and stop derailing the topic.

LOL... this comment is so funny, considering that it comes from someone who repeatedly derails topics multiple times even within the same thread by posting puerile drivel such as this:

Quote
Stop messing about with bull's eyes.  In fact try not to stand around bulls at all and you have a better than average chance of not reeking of the stuff they deposit out of their back end.  Posting up eye diagrams is similar to all the rest of the stuff you people do and pretend you're experts. Parrots and copy and paste specialists, as well as artists specialising in bull excrement.

I'm sure our resident scientific genius and author has no idea of the meaning of the word "irony".    ;D

I am glad however to see that I can still get under sceptimatic's skin and get a rise out of him.  Guaranteed every time hehe.