|
°
|
Loading
Hollow Face - Ghost Illusion (Video) |
||
Hollow Face - Ghost Optical Illusions by Sir Richard GregoryOptical IllusionsWill and Guy ponder how Celtic Druids used illusions at times like Halloween to impress and manipulate their worshipers. We conjecture that witches could also manipulate ghostly images to frighten relatives of the dead. The effect works because illusions prey on the brain. Our central nervous system processes images in the present, but gets confused by pictorial memories of the past. In modern times, it was Hermann von Helmholtz, who first described illusions as unconscious inferences from sensory data and knowledge derived from an earlier time. Von Helmholtz's discoveries have been developed by Sir Richard Gregory to create the illusion in the video below. Stage one of the optical Illusion - The Plaster Cast (See video below)
Stage two - Sir Richard Gregory flips the cast so we see the reverse side
We now see a ghostly picture. ΔStage 3 - As the picture / cast turns so the face appears to change its expression
Stage 4 - Sir Richard move the cast slightly and we get a different ghostly illusion
ˆ
Ghost Illusion
|
Joke of the Day EmailGet a clean joke delivered to your inbox every day, no strings attached, just part of our service. Free subscription to our Funny Joke of the Day email. We have over 1,500 pages of funny pictures, clean jokes, stories and amusing videos. Please use the Search below to find a topic of particular interest: |
Thought of the Day SubscriptionOur offer is to email you an inspirational 'Thought of the day'. Your subscription is completely free of cost and there are no adverts. Sign up for our 'Thought of the Day'. › |
Custom Search
Please email Guy with your joke or funny picture:
|