Optical Illusions
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The Impossible Kennel
Walter Wicks
This splendid photograph appears to show a true do-it-yourself nightmare. Walter Wicks has started to make a kennel for his puppies but it has turned out very strangely indeed. We know that a framework like this cannot really be made, but there it seems to stand. He sits on the ground beside it looking rather pleased with himself. This poster will make a fine contribution to any study of optical illusions and impossible figures and on it Walter explains with the help of additional photographs exactly how he achieved the illusion.
Poster 840 x 600mm £2.80 (+ VAT)
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Impossible Geometry
Poster Duncan Birmingham
Is it possible to catalogue the impossible? The answer appears to be yes, because that is what Duncan Birmingham has done to create this colourful poster. It shows 14 different impossible figures which are impossible in different ways. There is plenty to tease the eye and stimulate the imagination of children and adults alike.
840 x 600mm £2.80 (+ VAT)
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Illusion and Confusion
Pair of Posters Duncan Birmingham
Reality and order or possibly illusion and confusion. The eye finds it very difficult to decide. The impossible geometry which denies reality is cunningly hidden and disguised by detailed accuracy in places and by humorous touches in others. How much of the 'Tower of Confusions' or the Garden of Illusions' is real and how much is impossible?
Size of each: 600 x 420mm
Price per pair £2.95 (+ VAT)
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Can You Believe Your Eyes?
Over 250 illusions and other visual oddities
0 86051 809 4 Block & Yuker
Many of these illusions have never been published before in a book and those that have appeared elsewhere are linked and placed into context by excellent and interesting explanations. Many illustrations have been created specially to demonstrate particular principles of perception and of course mis-perception. Lines which look straight may really be curved or vice-versa and only recourse to a ruler will decide the matter. It is a book to be twisted this way or that, one to be viewed from close-up or far away and one which encourages active participation by the reader.
Book £8.99
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Optical Illusion Playing Cards
University of Hofstra Block & Yuker
A collection of 52 visual illusions, some well known, some rarely seen, are here presented in an unusual way. The illusions are printed on the faces of a pack of playing cards and classified by suit and number. Deal a card, pose a problem..... A booklet of explanations and solutions is included.
Can You Believe Your Eyes
Playing Cards £4.90 (+ VAT)
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Make Moving Patterns
How to make optical illusions of your own
0 906212 26 X Tim Armstrong
This highly original and colourful book shows how patterns can be made to move and how to create new forms of kinetic art. Three plastic overlays are included. Move them over the coloured grids and see how the patterns vibrate, rotate, pulsate, jiggle, wobble and dance. Well try some and see. Tim Armstrong explains the principle to get each sort of movement and then there are experiments to do, and ideas to try. Two curious optical illusion models are also included.
£4.95 (inc. VAT)
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Colour Perception
A practical approach to colour theory
0 906212 74 X Tim Armstrong
This unconventional introduction to the mysteries of colour vision uses spinning tops, coloured discs, spoked wheels and transparent filters to make its points. All these devices are cut from certain pages and they then neatly store back in the book to be used to accompany the text. It is intended to amuse but clear scientific explanations are given. We learn how the retina responds to the spectrum, how colour is printed and how colour illusions can be used to understand the nature of colour vision. The author is a practising artist interested in kinetics and in new ideas of vision and he explains how some artists choose colours by the rules of harmony.
£5.50
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Red & Blue Illusions
How to create 3-D drawings and other optical tricks
1 899618 05 8 Mark Hiner
The idea of printing two overlapping images in red and blue and then viewing them through coloured spectacles is a very old one, but this book breaks new ground in a very creative way. It provides a clear and precise explanation of how to construct this type of illusion and there are special glasses to make which illustrate the principles. It shows how different information has to be presented to each eye in a carefully controlled way and how to construct the correct perspective views. While mostly thought of as a method of generating three-dimensional images, there are plenty of ideas for surprising two-dimensional illusions as well. There are suggestions on how red & blue images can be used to produce original and amusing cards.
£5.95
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