Introduction: Optical Illusions: Fading Dot?

Optical Illusions: Fading Dot? How Does This Optical Illusion Work?

Step 1: Do the Optical Illusion!

Stare at the dot for awhile without moving your eyes or your head. The dot will gradually fade into the field of green. Some people find that the dot fades more rapidly if they stare blankly at the edge of the square. As soon as you move your head or eyes, notice that the dot reappears!



Step 2: Whoa! What Happened

What's Going On?!?

Your eye is always making tiny jittery movements. Each time your eye moves it receives new information and sends it to your brain. You need this information to see images.

You may have noticed that although the dot fades just about everything else in your field of vision remains clear. That's because everything else you see has distinct edges.

Step 3: Cool!

Ok There You Have It! ( trust me ill have better instructables ) k cyah!

Comments

author
kwalian made it!(author)2007-07-07

It also seems as though the dark green circle gets bigger.

author
ac1D made it!(author)2007-07-07

i did not see the little dot fade, but i do see the big circle "grow"

author
Instructsoar made it!(author)2015-10-17

how?

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technopenguin made it!(author)2007-09-29

For me, the little dot gets smaller and bigger over and over, same with the big green dot.

author
thedragonmaster made it!(author)2009-05-21

I agree

author
Instructsoar made it!(author)2015-10-17

thats weird but cool

author
cleage001 made it!(author)2011-10-04

För më thë ëntïrë grëën fädëd äwäÿ. LOL UMLAUTS

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superMacaroni made it!(author)2011-03-21

Silly dot, y u no fade?

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DontShoot262 made it!(author)2010-10-11

AWESOME!!!!!

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skimmo made it!(author)2010-05-05

I'm dyslexic its just looks like any other piece of text

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MoBaniS made it!(author)2009-08-13

the little dot turns into a burning skull... he will kill me... no... no... OMG... help me... aaaaaahhhrgrggrekejk-;:,.-. .................................................. SORRY XD nice explanation!

author
SFHandyman made it!(author)2007-11-09

I lose the whole thing. The green fades away completely and I'm just left with a faint blue dot. It only stays gone for a second but it's pure white for a moment.

author
Rock+Soldier made it!(author)2009-06-26

same with me, but both dots disappear at the same time...We must keep are unique gift secretive until the right time arises...

author
Rock+Soldier made it!(author)2009-06-26

Staring at the dot makes both dots disappear, I was blind in the one area. How dare you...

author
Rock+Soldier made it!(author)2009-06-26

It was cool though. I was only blind for like, a second at most it seemed like.

author
Father+Christmas made it!(author)2009-02-17

is there a problem is the large green mass shrunk by about 50% when i stared at the dot? o.O

author
Angeleyes997 made it!(author)2008-11-16

The second time I looked at the dot, it disapeared.

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Angeleyes997 made it!(author)2008-11-16

Every time I look at the dot, it looks like it is turning purple. No! I dont have sezers!

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sick-al made it!(author)2008-09-01

you said "Some people find that the dot fades more rapidly if they stare blankly at the edge of the square" its a circle isnt it? or are my eyes dodgy?

author
vailo made it!(author)2008-09-11

I think that they accidentally find their blind spot. But when I stare at the dot, my eyes just get really.. really.. tired...

author
Mitten made it!(author)2007-07-08

I found that its more of an optical illusen if you stare at the middle dot and move your head back and forth. the "haze" grows and shinks.

author
kaiga made it!(author)2008-06-21

me too

author
Laszlo made it!(author)2008-06-11

The optic nerves, as well as your visual cortex, function best when the incoming information changes. After a few seconds with no change, and even more so after a couple minutes, the image the brain is able to construct deteriorates somewhat because is expecting data about changes in light levels, not continuous light levels. This is the same basic issue that prevents a frog from noticing the water it's sitting in is heating up very slowly. However, homosapian vision systems are far more sensitive and complex, so it is often difficult for us to notice. This can be very difficult to experience for many reasons, not the least of which is that our eyes, and even our bodies, constantly make very minute movements we aren't aware of. It takes extremely little movement to stimulate changes in what the retina can detect, and add to that the fantastic mastery the visual cortex has of regenerating an image from very, very little information. The same process can be demonstrated in a completely different way by observing video shot outside on a sunny day. A camera without the proper red filter, or automatic color adjustment, will produce video that is drenched in blue light from the sky. The human vision system adapts to this excess blue so well that when we go outside, we see no 'excess' blue at all, which is inaccurate, and is an illusion. If you CAN...stare at something that is not moving for a long, long time, without moving your eyes or blinking, and you can actually 'see' a lot of the image fade away completely. Then even the slightest movement of your eyes will bring it all back. Meanwhile, if you get the the fading away stage, anything in your line of sight that does move will stand out tremendously. This is how many animals see the world, especially in very dim light.

author
jacksteal4 made it!(author)2008-05-26

wait I looked again and it got smaller

author
jacksteal4 made it!(author)2008-05-26

when I look at it it doesn't shrink...... it gets all deformed like it is being tortured

author
itsmanofpopsicle made it!(author)2008-03-27

my eyes hurt!

author
%21Andrew_Modder%21 made it!(author)2007-07-06

This is not an 'instructable' this is just a little trick... >:-|

author
ac1D made it!(author)2007-07-07

a little trick could be a illusion, a instructable explain or show how to build something. this, at my opinion, is a instructables.

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Vertigo666 made it!(author)2007-07-07

It pulsates. very calming.........................................................

author
gyromild made it!(author)2007-07-07

Heh.. perhaps i was hoping a little bit more explanation on why it happens.. :)

Anyway..
This site is great in explaining / demonstrating optical illusions.. (credit to Michael Bach)

And i think this is somewhat similar to the Lilac Chaser? (correct me if I'm wrong)

author
FrenchCrawler made it!(author)2007-07-07

Technically, this should be posted in the forums...

author
krazy made it!(author)2007-07-07

didn't work for me or my hubby.. i think its really like one of those things that works on semi color blind people because then the 2 colors would fade much easier then it would just any ol body. just like one of those test the eye doc gives you when you go in for a vision test.

author
Magnelectrostatic made it!(author)2007-07-06

this doesn't work for me instead I look at a dim light in a very dark area and EVERYTHING goes dark

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