Optical Illusion & reality

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Re: Optical Illusion & reality

Post by StitchExp626 on Tue Jun 10, 2008 4:17 am

A flake is a chocolate bar created by Cadbury, it's defining feature is that as you break it into pieces, it crumbles or 'flakes'.

Here is a picture of a typical Flake ad.

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Re: Optical Illusion & reality

Post by solarchap on Tue Jun 10, 2008 9:51 pm

thankyou stitchey! that was perfect mate!
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Re: Optical Illusion & reality

Post by Occam on Thu Jun 12, 2008 11:35 am

SunburnedPenguin wrote:Its summed up in the question....if you were born colour-blind...how would you know?

That's an easy question. Answer: 'cause my wife tells me not to leave the house until she approved my clothes choice. You know, matching colours is not an easy task for a "regular" man, but it becomes an impossible mission for a colour-blind man.

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Re: Optical Illusion & reality

Post by SunburnedPenguin on Thu Jun 12, 2008 12:40 pm

Haha good answer Occam Smile

But what I mean is, if you are taught as a child that the colour of an orange is orange, you call it orange and distinguish it as orange for the rest of your life. But you could be seeing what other people call green. Ok I know thats not how colour blindness works (I cant distinguish between purple and blue) but its hypothetical. How would you ever know you dont see the same colour? In your reality the colour is different from in everyone elses, but you dont know it.

The colours of flowers are not for our benefit, it is for the benefit of the bees who see different colour spectrums to us. We will never see the true colour of a flower unless viewed from the perspective of a bee.

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Re: Optical Illusion & reality

Post by Occam on Thu Jun 12, 2008 2:04 pm

SunburnedPenguin wrote:Ok I know thats not how colour blindness works.

Wrong. That's exactly how it works. At least partial colour-blindness, which is my case.

SunburnedPenguin wrote:How would you ever know you dont see the same colour? In your reality the colour is different from in everyone elses, but you dont know it.

Answer: You would never know. That's one of my wife's jokes; she asks me "don't you love my green eyes?" and, when I tell her I love them, but they are brown, she answers "how do you know?" In fact, I don't. It's just they look to me like what I'm taught to be brown, but I'll never be completely sure.

SunburnedPenguin wrote:The colours of flowers are not for our benefit, it is for the benefit of the bees who see different colour spectrums to us. We will never see the true colour of a flower unless viewed from the perspective of a bee.

Remember the Matrix? There's no colour... Very Happy

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Re: Optical Illusion & reality

Post by SunburnedPenguin on Thu Jun 12, 2008 2:31 pm

haha yes there is only the spoon.....or something. Been a while since I watched those lol.

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There's no spoon...

Post by Occam on Fri Jun 13, 2008 12:48 am

Matrix's Spoon boy wrote:Do not try to bend the spoon; that's impossible. Instead, only try to realize the truth. [What truth?] There is no spoon. Then you'll see, that it is not the spoon that bends, it is only yourself.

SunburnedPenguin wrote:We will never see the true colour of a flower unless viewed from the perspective of a bee.

There you have it. There's no spoon colour. Colour, like the famous spoon, is only in the mind. When looking to a flower, a dog only see gray shades. A bee sees something else. A rattlesnake sees quite a different thing. Still, it's the same flower.

Of course, in order for the mind to create colours, the eyes must be able to "capture" them. We must rely on our sensorial to be able to "weight" two physical facts: the intensity and the frequency of the light waves. We humans have two different elements to gather that information: rod and cone cells. Cones respond to high light intensity levels. Rods respond to low light intensity levels.

Cones are the cells that we use to distinguish color. This
has several very interesting effects. Almost all cones are located at the
middle of the retina, so it is very difficult to distinguish color in our peripheral vision. In addition, it makes it impossible to see color in low
levels of light when the cones are "turned off."

An average human eye has
about 7 million cones and 120 million rods. Mine doesn't. That's why I'm partially colour-blind: my eyes have less cones and more rods than the average human eye. But that's why, too, I don't have to turn on the lights when I have to go downstairs in the middle of the night to have a glass of water.

But all this knowledge doesn't help me on guessing whether my wife is teasing me or not when she says her eyes are green... Razz

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Re: Optical Illusion & reality

Post by solarchap on Fri Jun 13, 2008 1:20 am

Occers, good to see you.

You are both right in that, colour does not exist, (only as a fabrication in our virtual-reality generating brains), and SBP, absolutley, bee-purple is a wavelength which shows how bees see the 'runways' and 'landing spots' on flowers (Please refer to Richard Dawkins 'Climbing Mount Improbable' (Available in all good bookshops!) Very Happy

Now from one colour blind person to two others, tell me what numbers you see.....


(I see a 12)


I can't see Fu#k all in this one!


and i think this is 22

I do know, if you are red/green colour-blind and have a pair of 3d glasses, if you look through the red filter at these numbers, you can actually see what the number is. I have lost mine so I can only guess.

The Occam family I like, because they are in easy-to-see black and white!
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Re: Optical Illusion & reality

Post by Shamballa on Fri Jun 13, 2008 4:50 am

The last two look like 98 and 73 to me.

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Re: Optical Illusion & reality

Post by Caged_Faraday on Fri Jun 13, 2008 5:41 am

12, 96, and 7-. I can't make out the last one, and I just passed this test at my eye-doctor. The last image looks a bit duller than it should.

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Re: Optical Illusion & reality

Post by SunburnedPenguin on Fri Jun 13, 2008 5:47 am

12, 96, and 73 Smile Do I get a lolly pop?

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Re: Optical Illusion & reality

Post by Caged_Faraday on Fri Jun 13, 2008 5:56 am

SunburnedPenguin wrote:12, 96, and 73 Smile Do I get a lolly pop?
Yes... but what colour???

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Re: Optical Illusion & reality

Post by SunburnedPenguin on Fri Jun 13, 2008 5:57 am

Purple or Blue, doesnt really matter as they look the same to me Very Happy

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Hey, Sunny Dude ;)

Post by Occam on Fri Jun 13, 2008 9:32 am

solarchap wrote:Now from one colour blind person to two others, tell me what numbers you see.....

Yep, a 12

Nice colour dots

Nice colour dots

And that's it. Oh, don't you come asking what colour is the 12 up there. I just don't know. Wink

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Re: Optical Illusion & reality

Post by solarchap on Fri Jun 13, 2008 4:00 pm

ok Occers, it looks like me and you are colour-blind to the max! LOL!

I can't actually tell you all whether the 96 & 73 are there as I just can't see them, the 12 was no problem.

This is why I ended up in the prison service and not the police, and I had a couple of problems in chemistry early on at the start of my degree too. Basically you would not want me or Occers wiring up your homes!

Lollipops all round & CF.....what colour.....I like it! Laughing


Last edited by solarchap on Fri Jun 13, 2008 4:01 pm; edited 1 time in total (Reason for editing : the usual)
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Re: Optical Illusion & reality

Post by Occam on Fri Jun 13, 2008 4:53 pm

Nah, I wouldn't trust myself to deactivate the Freighter's bomb... Wink

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Re: Optical Illusion & reality

Post by solarchap on Fri Jun 13, 2008 5:21 pm

well me and you would be spared the horror, coz by the time the thing blew-up, we would still not have worked out that the red light came on!
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Re: Optical Illusion & reality

Post by MyStarbuckHatesLost on Sat Jun 14, 2008 4:09 am

Reality and perception.
Shaekspeare said it best
“Life's but a walking shadow, a poor player, that struts and frets his hour upon the stage and then is heard no more; it is a tale told by an idiot, full of sound and fury, signifying nothing.”





or perhaps Kiri-Kin-Tha's first law of metaphysics:

"Nothing unreal exists"

-Spock, Star Trek IV
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Re: Optical Illusion & reality

Post by Shamballa on Sat Jun 14, 2008 6:46 am

“Vanitas vanitatum, omnia vanitas”

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Re: Optical Illusion & reality

Post by solarchap on Sun Jun 15, 2008 7:41 pm

Fellas, I like it, Shakespeare & Latin,

I'll add some famous prose...

To see a World in a Grain of Sand
And a Heaven in a Wild Flower
Hold Infinity in the palm of your hand
And Eternity in an hour.


I think what old Blake meant was that when you are in the company of a hot-to-trot woman, time flies...

but when you do your chillum the wrong way round and a thousand hot-rocks engulf your mouth, time almost stops, trust me.
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Re: Optical Illusion & reality

Post by vincentthedog on Tue Jun 17, 2008 7:31 pm

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Re: Optical Illusion & reality

Post by Occam on Tue Jun 17, 2008 11:18 pm

Vinnie, dude, that hurts!

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Re: Optical Illusion & reality

Post by solarchap on Sat Jun 21, 2008 4:42 am

Occers is right, that should come with a health warning! Cool

ouchey on my brain!
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Re: Optical Illusion & reality

Post by vincentthedog on Sun Jul 06, 2008 12:22 am

Sorry guys.
I belive I found that one while researching Timothy Leary.



WARNIG! WARNING! WARNING!
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Re: Optical Illusion & reality

Post by vincentthedog on Sun Jul 06, 2008 12:23 am

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Re: Optical Illusion & reality

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