Go Back   Freethought Forum > The Marketplace > The Sciences

Reply
 
Thread Tools Display Modes
  #26  
Old 10-26-2005, 02:49 AM
Legs's Avatar
Legs Legs is offline
silky...
 
Join Date: Feb 2005
Location: XOXLIV&VMXOX
Images: 1479
Default Re: Optical illusions

What do you see?

__________________
--
Reply With Quote
  #27  
Old 10-26-2005, 02:52 AM
Ensign Steve's Avatar
Ensign Steve Ensign Steve is offline
California Sober
 
Join Date: Jul 2004
Location: Silicon Valley
Gender: Bender
Images: 66
Default Re: Optical illusions

__________________
:kiwf::smurf:
Reply With Quote
  #28  
Old 10-26-2005, 02:53 AM
Carlos Carlos is offline
Banned
 
Join Date: Jun 2005
Posts: DCCXCVII
Default Re: Optical illusions

Quote:
Originally Posted by Legs
What do you see?

Is that Latinijral playing guitar to his wife?
[IMG]http://www.freethought-forum.com/for...ine=1111954884[/IMG]

Not sure at all.

Thanks,
Carlos
Reply With Quote
  #29  
Old 10-26-2005, 06:32 PM
Carlos Carlos is offline
Banned
 
Join Date: Jun 2005
Posts: DCCXCVII
Default Re: Optical illusions

Quote:
Originally Posted by slimshady2357
I think one of the best optical illusion I've ever seen is this one:


The two coloured squares marked A and B are the same colour! Try cutting and pasting them side by side in paint or printing it out and cutting one out and placing it next to the other to see this.
Hi Adam :

Your example is a really good one.

I noticed how computers programs are so helpful for doing those optical illusions.

Do you think the same illusion will be repeated if it is used paint? I mean real paint.

Op Art was an Art movement of the early 60's or late 50's I guess so.
It is amazing how they did those paints without having the technology of today.

Omar Rayo ( Colombia) paints are one of my favorites.
http://karaart.com/artists/rayo/colombian.artists.html

Thanks,
Carlos
Reply With Quote
  #30  
Old 10-26-2005, 11:53 PM
Ensign Steve's Avatar
Ensign Steve Ensign Steve is offline
California Sober
 
Join Date: Jul 2004
Location: Silicon Valley
Gender: Bender
Images: 66
Default Re: Optical illusions

Quote:
Originally Posted by Carlos
I noticed how computers programs are so helpful for doing those optical illusions.

Do you think the same illusion will be repeated if it is used paint? I mean real paint.
Not just with paint, but even with real-world objects. Consider the cafe wall or the barber pole.

__________________
:kiwf::smurf:
Reply With Quote
  #31  
Old 10-27-2005, 01:16 AM
Carlos Carlos is offline
Banned
 
Join Date: Jun 2005
Posts: DCCXCVII
Default Re: Optical illusions

Quote:
Originally Posted by Ensign Steve
Quote:
Originally Posted by Carlos
I noticed how computers programs are so helpful for doing those optical illusions.

Do you think the same illusion will be repeated if it is used paint? I mean real paint.
Not just with paint, but even with real-world objects. Consider the cafe wall or the barber pole.

Hi Ensign S.:

Your examples are also good. Those are ways are illusions works. I even consider myself an illusion in some kind of sense and you can be my illusion .

Maybe I was not explicit enough in my particular question about Adam's example.
I was intrigued to repeat just that example using real paint , example : oil or acrilic. To see if the same mixed color fits on those two squares. Probabbly yes. But I was intrigued because of the use of the computer so maybe requires a hard study to do the same with mixed paint.
My theory is how the marked squares interact with the colors of the neighbors giving that fantastic illusion.

Oh, I forgot also to tell about the great and now classical optical drawings and Artworks Escher did , without using computers. I think he is ironically more popular now.

Thanks,
Carlos
Reply With Quote
  #32  
Old 06-14-2006, 08:29 PM
ceptimus's Avatar
ceptimus ceptimus is offline
puzzler
 
Join Date: Aug 2004
Location: UK
Posts: XVMMMXLII
Images: 28
Default Re: Optical illusions

Here's a nice one - it makes a black and white image look like it's in colour.

First, move your mouse away from the image, and stare at the dot without moving your eyes for about thirty seconds.

Then move your mouse over the image (keep looking at the dot). You should see a full colour image for a few seconds, even though the image is actually black and white.



I copied the images from this website so I could embed them here.
__________________
Reply With Quote
Thanks, from:
But (12-18-2013), ChuckF (05-10-2010), Doctor X (05-12-2010), Qingdai (05-09-2010), Shake (05-14-2010), Stormlight (05-10-2010)
  #33  
Old 06-14-2006, 08:44 PM
Leesifer's Avatar
Leesifer Leesifer is offline
not very big for a grown-up
 
Join Date: Jul 2004
Location: England
Posts: XVMCCLXVII
Blog Entries: 1
Images: 3
Default Re: Optical illusions

That's great, cep. I like the way it fades back to black and white.
__________________
I've made a huge tiny mistake!
Reply With Quote
  #34  
Old 06-14-2006, 08:58 PM
Crumb's Avatar
Crumb Crumb is offline
Adequately Crumbulent
 
Join Date: Jan 2005
Location: Cascadia
Gender: Male
Posts: LXMMDCCLXXXIV
Blog Entries: 22
Images: 355
Default Re: Optical illusions

Great illusion cep, but instant fucking headache. :headache:
__________________
:joecool2: :cascadia: :ROR: :portland: :joecool2:
Reply With Quote
  #35  
Old 06-14-2006, 09:18 PM
Kevlar's Avatar
Kevlar Kevlar is offline
High tech redneck
 
Join Date: Feb 2006
Location: Portland, Oregon
Gender: Male
Posts: MMMDCXLIV
Images: 16
Default Re: Optical illusions

* Kevlar goes to find some Dramamine
Reply With Quote
  #36  
Old 06-14-2006, 10:28 PM
ceptimus's Avatar
ceptimus ceptimus is offline
puzzler
 
Join Date: Aug 2004
Location: UK
Posts: XVMMMXLII
Images: 28
Default Re: Optical illusions

Sorry about that, Crumb. Did you flick back and forth between the two images by rapidly moving the mouse? Do you ever get migraines?

If anyone else gets a headache, let me know and I'll remove the images.
__________________
Reply With Quote
  #37  
Old 06-14-2006, 10:29 PM
Crumb's Avatar
Crumb Crumb is offline
Adequately Crumbulent
 
Join Date: Jan 2005
Location: Cascadia
Gender: Male
Posts: LXMMDCCLXXXIV
Blog Entries: 22
Images: 355
Default Re: Optical illusions

It's ok cep, I think I was just staring a bit too long at it.
__________________
:joecool2: :cascadia: :ROR: :portland: :joecool2:
Reply With Quote
  #38  
Old 06-14-2006, 11:57 PM
Legs's Avatar
Legs Legs is offline
silky...
 
Join Date: Feb 2005
Location: XOXLIV&VMXOX
Images: 1479
Default Re: Optical illusions

Are you guys falling for cep's mouseover trick?
__________________
--
Reply With Quote
Thanks, from:
Dragar (12-18-2013)
  #39  
Old 06-15-2006, 12:33 AM
cappuccino's Avatar
cappuccino cappuccino is offline
Member
 
Join Date: Jul 2004
Posts: MMDCCXXXVIII
Default Re: Optical illusions

That was damn awesome, ceptimus.
Reply With Quote
  #40  
Old 06-15-2006, 12:45 AM
pescifish's Avatar
pescifish pescifish is offline
go fish
 
Join Date: Jul 2004
Location: a rural part of Los Angeles, CA
Posts: VCCII
Images: 78
Default Re: Optical illusions

Quote:
Originally Posted by Legs
Are you guys falling for cep's mouseover trick?
Is it a trick? From the code, it looks like he's just bouncing between the two images (not any with colored frames in animation or the like.) It works for me if I show each of the two images in separate browser windows and then minimize the colory one.

If it's a mouseover trick, I'm interested to know how he's doing it! Awesome, indeed. :yup:
Reply With Quote
  #41  
Old 06-15-2006, 01:42 AM
Crumb's Avatar
Crumb Crumb is offline
Adequately Crumbulent
 
Join Date: Jan 2005
Location: Cascadia
Gender: Male
Posts: LXMMDCCLXXXIV
Blog Entries: 22
Images: 355
Default Re: Optical illusions

It is not a mouse over trick. For instance if you change your point of focus it will change to black and white instantly.
__________________
:joecool2: :cascadia: :ROR: :portland: :joecool2:
Reply With Quote
  #42  
Old 06-15-2006, 02:28 AM
Legs's Avatar
Legs Legs is offline
silky...
 
Join Date: Feb 2005
Location: XOXLIV&VMXOX
Images: 1479
Default Re: Optical illusions

I think it's a mouseover trick :twitch:
__________________
--
Reply With Quote
Thanks, from:
Dragar (12-18-2013)
  #43  
Old 06-15-2006, 02:58 AM
viscousmemories's Avatar
viscousmemories viscousmemories is offline
Admin
 
Join Date: Apr 2004
Location: Ypsilanti, Mi
Gender: Male
Posts: XXXDCCCLXIII
Blog Entries: 1
Images: 9
Default Re: Optical illusions

I don't know how I missed this thread the first time around. Very cool stuff here. :yup:
Reply With Quote
  #44  
Old 06-15-2006, 10:14 AM
ceptimus's Avatar
ceptimus ceptimus is offline
puzzler
 
Join Date: Aug 2004
Location: UK
Posts: XVMMMXLII
Images: 28
Default Re: Optical illusions

Here's the same thing without any mouseover. Look at the dot in the top picture for 30 seconds, then look at the dot on the bottom picture.



__________________
Reply With Quote
  #45  
Old 06-15-2006, 01:27 PM
Legs's Avatar
Legs Legs is offline
silky...
 
Join Date: Feb 2005
Location: XOXLIV&VMXOX
Images: 1479
Default Re: Optical illusions

ahhh.. okay, now I get it, the b &w pic looks colour. Thanks cep, :thankee:
__________________
--
Reply With Quote
  #46  
Old 05-09-2010, 08:33 PM
ceptimus's Avatar
ceptimus ceptimus is offline
puzzler
 
Join Date: Aug 2004
Location: UK
Posts: XVMMMXLII
Images: 28
Default Re: Optical illusions

The Thatcher effect.

So named as it first came to popular notice with pictures of Margaret Thatcher. It seems that our brains look at eyes and mouths separately. Though we can tell that the whole face is upside down, we can't seem to see that the eyes and mouths are wrong for that face orientation.

Reply With Quote
Thanks, from:
Crumb (05-10-2010), wei yau (05-11-2010)
  #47  
Old 05-09-2010, 08:58 PM
Dingfod's Avatar
Dingfod Dingfod is offline
A fellow sophisticate
 
Join Date: Jul 2004
Location: Cowtown, Kansas
Gender: Male
Blog Entries: 21
Images: 92
Default Re: Optical illusions

I get a bit of an optical illusion with the FSM image posted by DavidMabus0000 in another thread. As I scroll down, the image moves up the screen but appears to get larger as it does so. Or is it just me?

Reply With Quote
Thanks, from:
Crumb (05-10-2010)
  #48  
Old 05-09-2010, 10:08 PM
ceptimus's Avatar
ceptimus ceptimus is offline
puzzler
 
Join Date: Aug 2004
Location: UK
Posts: XVMMMXLII
Images: 28
Default Re: Optical illusions

I can see that effect too, Dingfod. I don't see the same thing with avatars and other images on this page - perhaps it's something to do with the bold contrasting lines of the FSM image. :chin:
Reply With Quote
Thanks, from:
Dingfod (05-09-2010)
  #49  
Old 05-10-2010, 05:12 AM
Crumb's Avatar
Crumb Crumb is offline
Adequately Crumbulent
 
Join Date: Jan 2005
Location: Cascadia
Gender: Male
Posts: LXMMDCCLXXXIV
Blog Entries: 22
Images: 355
Default Re: Optical illusions

I see that, too. :joecool2:
__________________
:joecool2: :cascadia: :ROR: :portland: :joecool2:
Reply With Quote
  #50  
Old 12-18-2013, 05:00 PM
Ensign Steve's Avatar
Ensign Steve Ensign Steve is offline
California Sober
 
Join Date: Jul 2004
Location: Silicon Valley
Gender: Bender
Images: 66
Default Re: Optical illusions

There are four optical illusions threads*. Three of them are in the Sciences forum. Two of them were started by ceptimus. This is the oldest one.


* (not counting atmospheric optical phenomena)
__________________
:kiwf::smurf:
Reply With Quote
Thanks, from:
BrotherMan (12-18-2013), ceptimus (12-20-2013), Crumb (12-18-2013), fragment (12-18-2013), Janet (12-18-2013), SR71 (12-19-2013)
Reply

  Freethought Forum > The Marketplace > The Sciences


Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump

 

All times are GMT +1. The time now is 08:16 AM.


Powered by vBulletin® Version 3.8.2
Copyright ©2000 - 2024, Jelsoft Enterprises Ltd.
Page generated in 1.33589 seconds with 17 queries