• Post Reply Bookmark Topic Watch Topic
  • New Topic
permaculture forums growies critters building homesteading energy monies kitchen purity ungarbage community wilderness fiber arts art permaculture artisans regional education skip experiences global resources cider press projects digital market permies.com pie forums private forums all forums
this forum made possible by our volunteer staff, including ...
master stewards:
  • John F Dean
  • Carla Burke
  • Nancy Reading
  • r ranson
  • Pearl Sutton
  • Jay Angler
stewards:
  • Liv Smith
  • paul wheaton
  • Nicole Alderman
master gardeners:
  • Christopher Weeks
  • Timothy Norton
gardeners:
  • thomas rubino
  • Matt McSpadden
  • Eric Hanson

optical illusions

 
author and steward
Posts: 51880
Location: missoula, montana (zone 4)
hugelkultur trees chicken wofati bee woodworking
  • Likes 3
  • Mark post as helpful
  • send pies
    Number of slices to send:
    Optional 'thank-you' note:
  • Quote
  • Report post to moderator
 
Posts: 69
Location: Missoula
1
  • Mark post as helpful
  • send pies
    Number of slices to send:
    Optional 'thank-you' note:
  • Quote
  • Report post to moderator
Thats interesting, even though they show you that it slants down, it looks like there is a magnet in the middle that is attracting the balls.
 
paul wheaton
author and steward
Posts: 51880
Location: missoula, montana (zone 4)
hugelkultur trees chicken wofati bee woodworking
  • Likes 2
  • Mark post as helpful
  • send pies
    Number of slices to send:
    Optional 'thank-you' note:
  • Quote
  • Report post to moderator
Which way is she spinning? Does it change?

 
paul wheaton
author and steward
Posts: 51880
Location: missoula, montana (zone 4)
hugelkultur trees chicken wofati bee woodworking
  • Likes 2
  • Mark post as helpful
  • send pies
    Number of slices to send:
    Optional 'thank-you' note:
  • Quote
  • Report post to moderator
This is a static image

[url=http://www.ritsumei.ac.jp/~akitaoka/index-e.html]

source[/url]
 
paul wheaton
author and steward
Posts: 51880
Location: missoula, montana (zone 4)
hugelkultur trees chicken wofati bee woodworking
  • Likes 5
  • Mark post as helpful
  • send pies
    Number of slices to send:
    Optional 'thank-you' note:
  • Quote
  • Report post to moderator
 
pollinator
Posts: 1234
Location: Chicago/San Francisco
196
  • Mark post as helpful
  • send pies
    Number of slices to send:
    Optional 'thank-you' note:
  • Quote
  • Report post to moderator
Looks to me like the spinning girl actually does change direction although I don't know how much or what parts of the actual animation file change. I don't see how the apparent lead with the left (and then the right) arm could be illusory.

Hints?

Rufus
 
steward
Posts: 3722
Location: Kingston, Canada (USDA zone 5a)
551
12
purity dog forest garden fungi trees tiny house chicken food preservation woodworking
  • Likes 1
  • Mark post as helpful
  • send pies
    Number of slices to send:
    Optional 'thank-you' note:
  • Quote
  • Report post to moderator
Here is a cool one!

 
paul wheaton
author and steward
Posts: 51880
Location: missoula, montana (zone 4)
hugelkultur trees chicken wofati bee woodworking
  • Likes 4
  • Mark post as helpful
  • send pies
    Number of slices to send:
    Optional 'thank-you' note:
  • Quote
  • Report post to moderator
 
Adrien Lapointe
steward
Posts: 3722
Location: Kingston, Canada (USDA zone 5a)
551
12
purity dog forest garden fungi trees tiny house chicken food preservation woodworking
  • Likes 1
  • Mark post as helpful
  • send pies
    Number of slices to send:
    Optional 'thank-you' note:
  • Quote
  • Report post to moderator


A rock falling off the sky?
 
paul wheaton
author and steward
Posts: 51880
Location: missoula, montana (zone 4)
hugelkultur trees chicken wofati bee woodworking
  • Likes 1
  • Mark post as helpful
  • send pies
    Number of slices to send:
    Optional 'thank-you' note:
  • Quote
  • Report post to moderator
I thought it was some small insect carrying the rock.
 
Adrien Lapointe
steward
Posts: 3722
Location: Kingston, Canada (USDA zone 5a)
551
12
purity dog forest garden fungi trees tiny house chicken food preservation woodworking
  • Mark post as helpful
  • send pies
    Number of slices to send:
    Optional 'thank-you' note:
  • Quote
  • Report post to moderator
That would be cool.

It took my brain a bit to realize what was actually going on.
 
Posts: 1400
Location: Verde Valley, AZ.
  • Mark post as helpful
  • send pies
    Number of slices to send:
    Optional 'thank-you' note:
  • Quote
  • Report post to moderator
and its use as a study of schizophrenia.
there is also a cool study of the brain that showed that schizo is actually just the fact that some folks brains don't have the half second delay that everyone else has.
was written up along with the study of the fake hand being touched.


http://www.newscientist.com/article/dn16911-schizophrenics-see-through-hollowmask-illusion.html

http://www.michaelbach.de/ot/fcs_hollow-face/

http://www.echalk.co.uk/amusements/OpticalIllusions/hollowMask/hollowface.html


there is also a japanese researcher that claims that ALL the opticlal illusions are the brain trying to locate the parallax of the "end" of the illusion to judge distance.
some cool studies on computer screen opticals that show directional changes from font sizes stacked in interesting ways.

http://www.newopticalillusions.com/funny-optical-illusions/moving-text-optical-illusions/


http://www.moillusions.com/illusion-of-the-day-widgets

 
paul wheaton
author and steward
Posts: 51880
Location: missoula, montana (zone 4)
hugelkultur trees chicken wofati bee woodworking
  • Likes 1
  • Mark post as helpful
  • send pies
    Number of slices to send:
    Optional 'thank-you' note:
  • Quote
  • Report post to moderator
 
paul wheaton
author and steward
Posts: 51880
Location: missoula, montana (zone 4)
hugelkultur trees chicken wofati bee woodworking
  • Likes 4
  • Mark post as helpful
  • send pies
    Number of slices to send:
    Optional 'thank-you' note:
  • Quote
  • Report post to moderator
 
steward
Posts: 1748
Location: Western Kentucky-Climate Unpredictable Zone 6b
114
  • Mark post as helpful
  • send pies
    Number of slices to send:
    Optional 'thank-you' note:
  • Quote
  • Report post to moderator
Glamour Shots !
 
paul wheaton
author and steward
Posts: 51880
Location: missoula, montana (zone 4)
hugelkultur trees chicken wofati bee woodworking
  • Likes 3
  • Mark post as helpful
  • send pies
    Number of slices to send:
    Optional 'thank-you' note:
  • Quote
  • Report post to moderator
 
paul wheaton
author and steward
Posts: 51880
Location: missoula, montana (zone 4)
hugelkultur trees chicken wofati bee woodworking
  • Likes 3
  • Mark post as helpful
  • send pies
    Number of slices to send:
    Optional 'thank-you' note:
  • Quote
  • Report post to moderator
Apparently this is not part of the design


 
paul wheaton
author and steward
Posts: 51880
Location: missoula, montana (zone 4)
hugelkultur trees chicken wofati bee woodworking
  • Likes 3
  • Mark post as helpful
  • send pies
    Number of slices to send:
    Optional 'thank-you' note:
  • Quote
  • Report post to moderator
 
pollinator
Posts: 875
Location: Kansas
230
forest garden fungi bee medical herbs writing greening the desert
  • Mark post as helpful
  • send pies
    Number of slices to send:
    Optional 'thank-you' note:
  • Quote
  • Report post to moderator
Watch the arch of the turning woman's standing foot.
 
steward
Posts: 15850
Location: USDA Zone 8a
4248
dog hunting food preservation cooking bee greening the desert
  • Likes 4
  • Mark post as helpful
  • send pies
    Number of slices to send:
    Optional 'thank-you' note:
  • Quote
  • Report post to moderator

source
 
Anne Miller
steward
Posts: 15850
Location: USDA Zone 8a
4248
dog hunting food preservation cooking bee greening the desert
  • Likes 5
  • Mark post as helpful
  • send pies
    Number of slices to send:
    Optional 'thank-you' note:
  • Quote
  • Report post to moderator

source
 
pollinator
Posts: 231
Location: S. New England
106
fungi foraging trees chicken bee wood heat homestead
  • Likes 4
  • Mark post as helpful
  • send pies
    Number of slices to send:
    Optional 'thank-you' note:
  • Quote
  • Report post to moderator
Find the black dot...



findthedot.jpg
[Thumbnail for findthedot.jpg]
 
steward & bricolagier
Posts: 14566
Location: SW Missouri
9945
2
goat cat fungi books chicken earthworks food preservation cooking building homestead ungarbage
  • Likes 3
  • Mark post as helpful
  • send pies
    Number of slices to send:
    Optional 'thank-you' note:
  • Quote
  • Report post to moderator
Something odd about this one...
My mom has the beginnings of Macular Degeneration, we watch her eyes closely. She doesn't see the illusion in this at all. Looks like a perfectly fine picture to her. Maybe it's a new eye test to use. We have a few that are used to track the damage.

Where do they cross?
Where do they cross?

 
rocket scientist
Posts: 6193
Location: latitude 47 N.W. montana zone 6A
3137
cat pig rocket stoves
  • Likes 2
  • Mark post as helpful
  • send pies
    Number of slices to send:
    Optional 'thank-you' note:
  • Quote
  • Report post to moderator
Yes, something odd...  like there are four circles that do not cross?
 
Pearl Sutton
steward & bricolagier
Posts: 14566
Location: SW Missouri
9945
2
goat cat fungi books chicken earthworks food preservation cooking building homestead ungarbage
  • Likes 4
  • Mark post as helpful
  • send pies
    Number of slices to send:
    Optional 'thank-you' note:
  • Quote
  • Report post to moderator

thomas rubino wrote:Yes, something odd...  like there are four circles that do not cross?


Well, I meant it's odd that she sees absolutely no illusion.
All she sees is four circles just sitting there. They don't look like spirals or wiggly or anything.
Macular Degeneration is all we can think of.

 
thomas rubino
rocket scientist
Posts: 6193
Location: latitude 47 N.W. montana zone 6A
3137
cat pig rocket stoves
  • Likes 3
  • Mark post as helpful
  • send pies
    Number of slices to send:
    Optional 'thank-you' note:
  • Quote
  • Report post to moderator
I can see both.     When I concentrate on what I am looking at, I see 4 circles.
When I just look at it, my mind badly wants it to be a spiral!  Even as I tell myself it is not!

There is an old saying
What are you looking for?  And what are you looking at?
 
Anne Miller
steward
Posts: 15850
Location: USDA Zone 8a
4248
dog hunting food preservation cooking bee greening the desert
  • Likes 2
  • Mark post as helpful
  • send pies
    Number of slices to send:
    Optional 'thank-you' note:
  • Quote
  • Report post to moderator
On that image, Where do they cross? I don't see four circles.  I am not sure where they intersect.

Find the black dot ... it is in the white dots when it flashes.
 
Pearl Sutton
steward & bricolagier
Posts: 14566
Location: SW Missouri
9945
2
goat cat fungi books chicken earthworks food preservation cooking building homestead ungarbage
  • Likes 3
  • Mark post as helpful
  • send pies
    Number of slices to send:
    Optional 'thank-you' note:
  • Quote
  • Report post to moderator
.
wiggly-fractal-green.jpg
[Thumbnail for wiggly-fractal-green.jpg]
 
Anne Miller
steward
Posts: 15850
Location: USDA Zone 8a
4248
dog hunting food preservation cooking bee greening the desert
  • Likes 3
  • Mark post as helpful
  • send pies
    Number of slices to send:
    Optional 'thank-you' note:
  • Quote
  • Report post to moderator

source


source


source


source
 
Every time you till, you lose 30% of your organic matter. But this tiny ad is durable:
Special fundraiser JUST for the permaculture bootcamp!
https://permies.com/w/bel-fundraiser
reply
    Bookmark Topic Watch Topic
  • New Topic