Wednesday

Jastrow Size Optical Illusion

The Jastrow illusion is an optical illusion discovered by the American psychologist Joseph Jastrow in 1889. In this image, the two figures are identical, although the bottom one appears to be larger.

Jastrow Size Optical Illusion

So you look at the above and say OK maybe they are the same size. You can even see that it is true. How about the photo below, is it possible that these two are the same size?

Three Cubes Optical Illusion

Even knowing that the two above are the same size it is hard to believe. Look at them how is it possible for them to be the same size? Well you don't have to take my word for it, check out the video below. This time Seeing is believing!


Filmed at the Hong Kong Science Museum by YouTube.com user kennsiu.

6 comments:

  1. Anonymous1:09 AM EST

    Anyone care to explain how this works?

    ReplyDelete
  2. Anonymous7:01 PM EST

    I would also like to know that.

    Is it the angles on the left and right sides of the pieces?

    ReplyDelete
  3. Anonymous8:00 AM EST

    Dont believe it....!!!!

    ReplyDelete
  4. Anonymous9:46 AM EST

    If you don't believe it, cut out your own pieces out of cardboard and see if it looks the same.

    ReplyDelete
  5. Anonymous11:03 AM EST

    Thats pretty cool.

    ReplyDelete
  6. i had this illution once... i was 5 when i got my first scalextric set.. i noticed that 1 track was bigger then the other...i was wondering,"how come its bigger"i just ignored it!

    ReplyDelete