Go Back   Freethought Forum > The Marketplace > The Sciences

Reply
 
Thread Tools Display Modes
  #1  
Old 11-30-2012, 11:32 PM
ceptimus's Avatar
ceptimus ceptimus is offline
puzzler
 
Join Date: Aug 2004
Location: UK
Posts: XVMMDCCXC
Images: 28
Default Optical illusions

I was going to bump one of the old optical illusion threads, but many of the links and images in those are no longer available, so here's a fresh thread.

Reply With Quote
Thanks, from:
Ari (12-01-2012), But (11-30-2012), chunksmediocrites (12-02-2012), Clutch Munny (12-03-2012), Demimonde (12-05-2012), Dragar (12-01-2012), Ensign Steve (12-01-2012), Janet (12-01-2012), Jerome (12-01-2012), Kael (12-01-2012), koan (12-01-2012), Pan Narrans (12-01-2012), Shake (12-12-2012), Spacemonkey (08-30-2018), The Man (11-30-2012), thedoc (12-01-2012), trisemigistus (12-04-2012), Ymir's blood (12-01-2012)
  #2  
Old 11-30-2012, 11:55 PM
But's Avatar
But But is offline
This is the title that appears beneath your name on your posts.
 
Join Date: Jun 2005
Gender: Male
Posts: MVDCCCLXXIII
Default Re: Optical illusions

That one's amazing.
Reply With Quote
  #3  
Old 12-01-2012, 12:09 AM
Ari's Avatar
Ari Ari is offline
I read some of your foolish scree, then just skimmed the rest.
 
Join Date: Jan 2005
Location: Bay Area
Gender: Male
Posts: XMDCCCLV
Blog Entries: 8
Default Re: Optical illusions

Reply With Quote
Thanks, from:
But (12-01-2012), ceptimus (12-01-2012), chunksmediocrites (12-02-2012), Crumb (12-01-2012), Ensign Steve (12-01-2012), koan (12-01-2012), lpetrich (03-30-2014), Shake (12-12-2012), Spacemonkey (08-30-2018), The Man (12-01-2012), Ymir's blood (12-01-2012)
  #4  
Old 12-01-2012, 02:53 AM
Ensign Steve's Avatar
Ensign Steve Ensign Steve is online now
California Sober
 
Join Date: Jul 2004
Location: Silicon Valley
Gender: Bender
Posts: XXXMMCXXI
Images: 66
Default Re: Optical illusions

Quote:
Originally Posted by But View Post
That one's amazing.
Right? Even when I close one eye and trace the circles with my mouse I'm still like, damn.
__________________
:kiwf::smurf:
Reply With Quote
Thanks, from:
ceptimus (12-02-2012)
  #5  
Old 12-01-2012, 04:23 AM
koan koan is offline
cold, heartless bitch
 
Join Date: Feb 2005
Posts: MCCCXXXVI
Default Re: Optical illusions

I thought it was a spiral until I left my mouse at a point on each circle and followed each one around until I got to my mouse arrow again.
__________________
Integrity has no need of rules

- Albert Camus
Reply With Quote
Thanks, from:
ceptimus (12-02-2012)
  #6  
Old 12-01-2012, 04:18 PM
But's Avatar
But But is offline
This is the title that appears beneath your name on your posts.
 
Join Date: Jun 2005
Gender: Male
Posts: MVDCCCLXXIII
Default Re: Optical illusions

Quote:
Originally Posted by Ari View Post
:vomit:
Reply With Quote
  #7  
Old 12-01-2012, 07:09 PM
ceptimus's Avatar
ceptimus ceptimus is offline
puzzler
 
Join Date: Aug 2004
Location: UK
Posts: XVMMDCCXC
Images: 28
Default Re: Optical illusions

Reply With Quote
Thanks, from:
But (12-02-2012), Clutch Munny (12-03-2012), Crumb (12-01-2012), Dragar (12-01-2012), Janet (12-01-2012), lpetrich (08-25-2017), Nullifidian (03-09-2013), Spacemonkey (08-30-2018), vremya (12-03-2012)
  #8  
Old 12-01-2012, 08:24 PM
BrotherMan's Avatar
BrotherMan BrotherMan is offline
A Very Gentle Bort
 
Join Date: Jan 2005
Location: Bortlandia
Gender: Male
Posts: XVMMXVIII
Blog Entries: 5
Images: 63
Default Re: Optical illusions

:psyduck:
__________________
\V/_
I COVLD TEACh YOV BVT I MVST LEVY A FEE
Reply With Quote
Thanks, from:
Ymir's blood (12-02-2012)
  #9  
Old 12-02-2012, 09:13 PM
ceptimus's Avatar
ceptimus ceptimus is offline
puzzler
 
Join Date: Aug 2004
Location: UK
Posts: XVMMDCCXC
Images: 28
Default Re: Optical illusions

It looks like it's animated, but there's no such thing as an animated .jpg

Reply With Quote
Thanks, from:
Ari (12-02-2012), But (12-02-2012), chunksmediocrites (12-02-2012), Clutch Munny (12-03-2012), Crumb (12-02-2012), Demimonde (12-05-2012), Janet (12-05-2012), Nullifidian (03-09-2013), The Man (05-18-2014), viscousmemories (01-12-2013), Ymir's blood (12-03-2012)
  #10  
Old 12-02-2012, 09:51 PM
Ensign Steve's Avatar
Ensign Steve Ensign Steve is online now
California Sober
 
Join Date: Jul 2004
Location: Silicon Valley
Gender: Bender
Posts: XXXMMCXXI
Images: 66
Default Re: Optical illusions

THEN WHO WAS PHONE?
__________________
:kiwf::smurf:
Reply With Quote
Thanks, from:
Anastasia Beaverhausen (12-14-2012), BrotherMan (12-02-2012), ceptimus (12-14-2012), Clutch Munny (12-03-2012), Crumb (12-02-2012), Demimonde (12-05-2012), Janet (12-05-2012), Kael (12-02-2012), Pan Narrans (12-03-2012), Sock Puppet (12-03-2012), The Man (05-18-2014), Ymir's blood (12-03-2012)
  #11  
Old 12-03-2012, 10:46 AM
slimshady2357's Avatar
slimshady2357 slimshady2357 is offline
forever in search of dill pickle doritos
 
Join Date: Jul 2004
Posts: VMLXXIV
Blog Entries: 6
Images: 52
Default Re: Optical illusions

Nice one!

If I stare directly at the center of the picture it stops looking as though I'm moving down the corridor (but the peripheral is still sort of wavy). But if you sort of swirl your gaze around the picture it just keeps 'moving down the corridor'.
Reply With Quote
  #12  
Old 12-14-2012, 09:22 AM
ceptimus's Avatar
ceptimus ceptimus is offline
puzzler
 
Join Date: Aug 2004
Location: UK
Posts: XVMMDCCXC
Images: 28
Default Re: Optical illusions

Photo of some buildings in Egypt. It's not immediately obvious which building is closest to the camera, though you can work it out with a little study.

Reply With Quote
Thanks, from:
Adam (02-26-2013), Anastasia Beaverhausen (12-14-2012), Crumb (12-14-2012), Janet (12-14-2012), Kael (12-14-2012), livius drusus (01-12-2013), maddog (02-27-2013), Nullifidian (03-09-2013), Pan Narrans (12-14-2012), Spacemonkey (08-30-2018), viscousmemories (01-12-2013), Ymir's blood (12-18-2012)
  #13  
Old 01-12-2013, 04:48 PM
viscousmemories's Avatar
viscousmemories viscousmemories is offline
Admin
 
Join Date: Apr 2004
Location: Ypsilanti, Mi
Gender: Male
Posts: XXXDCCXLVI
Blog Entries: 1
Images: 9
Default Re: Optical illusions

I watched Nova ScienceNOW - How Does the Brain Work? a couple nights ago. It's hosted by Neil Degrasse Tyson and explains a fair amount about how optical illusions work. It even covers the McGurk Effect and Change Blindness which I first learned about in Clutch's article.
Reply With Quote
Thanks, from:
Ari (01-12-2013), ceptimus (01-12-2013), Nullifidian (03-09-2013)
  #14  
Old 02-26-2013, 05:12 PM
Crumb's Avatar
Crumb Crumb is offline
Adequately Crumbulent
 
Join Date: Jan 2005
Location: Cascadia
Gender: Male
Posts: LXMMCDVIII
Blog Entries: 22
Images: 355
Default Re: Optical illusions

I don't think this voyage will end well.

__________________
:joecool2: :cascadia: :ROR: :portland: :joecool2:
Reply With Quote
Thanks, from:
BrotherMan (02-26-2013), ceptimus (02-26-2013), Janet (02-26-2013), Nullifidian (03-09-2013), Pan Narrans (02-27-2013), Sock Puppet (02-26-2013), Ymir's blood (02-27-2013)
  #15  
Old 02-27-2013, 03:09 PM
Ymir's blood's Avatar
Ymir's blood Ymir's blood is offline
Coffin Creep
 
Join Date: Sep 2004
Location: The nightmare realm
Posts: XXXDCCCIII
Images: 67
Default Re: Optical illusions

What voyage? All I see is a skull.
__________________
Much of MADNESS, and more of SIN, and HORROR the soul of the plot.
Reply With Quote
Thanks, from:
Crumb (02-27-2013), Dragar (02-27-2013), Ensign Steve (02-27-2013), Janet (02-27-2013), maddog (02-27-2013), Nullifidian (03-09-2013)
  #16  
Old 01-08-2014, 06:29 PM
ceptimus's Avatar
ceptimus ceptimus is offline
puzzler
 
Join Date: Aug 2004
Location: UK
Posts: XVMMDCCXC
Images: 28
Default Re: Optical illusions

__________________

Last edited by ceptimus; 01-09-2014 at 10:37 AM. Reason: hotlink was broken
Reply With Quote
Thanks, from:
But (09-04-2014), Spacemonkey (08-30-2018), SR71 (01-16-2014), Stormlight (01-10-2014)
  #17  
Old 01-08-2014, 10:47 PM
Crumb's Avatar
Crumb Crumb is offline
Adequately Crumbulent
 
Join Date: Jan 2005
Location: Cascadia
Gender: Male
Posts: LXMMCDVIII
Blog Entries: 22
Images: 355
Default Re: Optical illusions

:redx:
__________________
:joecool2: :cascadia: :ROR: :portland: :joecool2:
Reply With Quote
Thanks, from:
ceptimus (01-08-2014), SR71 (01-16-2014)
  #18  
Old 01-15-2014, 06:29 PM
Corona688's Avatar
Corona688 Corona688 is offline
Forum Killer
 
Join Date: Aug 2004
Posts: MVCII
Default Re: Optical illusions

My cat can see the rotating snake illusion! - YouTube
__________________
Reply With Quote
Thanks, from:
Ari (01-15-2014), ceptimus (01-15-2014), Ensign Steve (01-15-2014), Janet (01-15-2014), slimshady2357 (01-15-2014), Stormlight (02-03-2014)
  #19  
Old 01-16-2014, 12:41 PM
ceptimus's Avatar
ceptimus ceptimus is offline
puzzler
 
Join Date: Aug 2004
Location: UK
Posts: XVMMDCCXC
Images: 28
Default Re: Optical illusions

Animated gif that lets you "see" your blind spot.

Close or cover your left eye. Keep your right eye focussed on the small spot. You may have to move your head closer to the screen depending on the size of your monitor. You probably need your head about a foot away or so, with a regular sized monitor.

You should 'see' the big spot (in your peripheral vision) disappear and reappear as it moves past your eye's blind spot.



If the spot doesn't disappear at all move your head closer. If the spot only disappears at its extreme right hand position, again move closer. You really want to "see" it disappear about three quarters of the way across - and then reappear as it moves even further from your focus point.
__________________
Reply With Quote
Thanks, from:
Corona688 (02-24-2014), Ensign Steve (01-16-2014), Janet (01-16-2014), slimshady2357 (01-16-2014), Sock Puppet (01-16-2014)
  #20  
Old 01-16-2014, 12:47 PM
ceptimus's Avatar
ceptimus ceptimus is offline
puzzler
 
Join Date: Aug 2004
Location: UK
Posts: XVMMDCCXC
Images: 28
Default Re: Optical illusions

Smiley version of above, without needing an animated gif.


:eyeball: :circusball:
__________________
Reply With Quote
Thanks, from:
Crumb (01-16-2014), Ensign Steve (01-16-2014), Janet (01-16-2014), Pan Narrans (01-16-2014), slimshady2357 (01-16-2014), Stormlight (02-03-2014)
  #21  
Old 02-03-2014, 09:49 AM
ceptimus's Avatar
ceptimus ceptimus is offline
puzzler
 
Join Date: Aug 2004
Location: UK
Posts: XVMMDCCXC
Images: 28
Default Re: Optical illusions

The "squares" on this chequerboard are not quite square but they're all the same shape and size* and are laid out on a perfectly regular grid.



* including rotations and reflections - and actually the white ones at the outer edge of the image are slightly larger in area - they should really have little notches cut out of them on the outside edges.
__________________
Reply With Quote
Thanks, from:
Ari (02-03-2014), Crumb (02-03-2014), Ensign Steve (02-03-2014), Janet (02-04-2014), JoeP (02-03-2014), Pan Narrans (02-03-2014), SR71 (02-03-2014), Stormlight (02-03-2014)
  #22  
Old 05-18-2014, 05:27 PM
The Man's Avatar
The Man The Man is offline
Safety glasses off, motherfuckers
 
Join Date: Apr 2009
Location: Sarasota, FL
Gender: Bender
Posts: MVCMLVI
Default Re: Optical illusions



Did someone put LSD in my water supply?
__________________
Cēterum cēnseō factiōnem Rēpūblicānam dēlendam esse īgnī ferrōque.

“All for ourselves, and nothing for other people, seems, in every age of the world, to have been the vile maxim of the masters of mankind.” -Adam Smith

last.fm · my music · Marathon Expanded Universe
Reply With Quote
Thanks, from:
But (05-18-2014), ceptimus (05-21-2014), Ensign Steve (05-18-2014), Janet (05-22-2014), JoeP (05-19-2014), Sock Puppet (05-19-2014), SR71 (05-19-2014)
  #23  
Old 05-19-2014, 02:42 AM
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

Better than having LDS in your water supply.
__________________
Sleep - the most beautiful experience in life - except drink.--W.C. Fields
Reply With Quote
  #24  
Old 07-22-2014, 03:10 AM
The Man's Avatar
The Man The Man is offline
Safety glasses off, motherfuckers
 
Join Date: Apr 2009
Location: Sarasota, FL
Gender: Bender
Posts: MVCMLVI
Default Re: Optical illusions

__________________
Cēterum cēnseō factiōnem Rēpūblicānam dēlendam esse īgnī ferrōque.

“All for ourselves, and nothing for other people, seems, in every age of the world, to have been the vile maxim of the masters of mankind.” -Adam Smith

last.fm · my music · Marathon Expanded Universe
Reply With Quote
Thanks, from:
But (09-04-2014), ceptimus (07-22-2014), Corona688 (07-28-2014), Crumb (07-22-2014), Ensign Steve (07-22-2014), Hermit (07-22-2014), Janet (07-22-2014), JoeP (07-22-2014), Kael (07-22-2014), mickthinks (07-22-2014), Pan Narrans (07-22-2014), slimshady2357 (08-27-2014), Zehava (07-22-2014)
  #25  
Old 08-27-2014, 03:30 AM
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

__________________
Sleep - the most beautiful experience in life - except drink.--W.C. Fields
Reply With Quote
Thanks, from:
Angakuk (08-28-2014), Artemis Entreri (08-27-2014), ceptimus (08-27-2014), Crumb (08-27-2014), Ensign Steve (08-27-2014), Janet (08-27-2014), JoeP (08-27-2014), Kael (08-27-2014), Miisa (08-27-2014), Pan Narrans (09-04-2014), Saxatilis (10-31-2015)
Reply

  Freethought Forum > The Marketplace > The Sciences


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

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 07:00 AM.


Powered by vBulletin® Version 3.8.2
Copyright ©2000 - 2024, Jelsoft Enterprises Ltd.
Page generated in 0.64070 seconds with 17 queries