In this freshly updated, comprehensive study, political scientist David Koyzis surveys the key political ideologies of our era, unpacking the worldview issues inherent to each and pointing out essential strengths and weaknesses. Writing with broad international perspective, Koyzis is a sensible guide for Christians working in the public square, culture watchers, and all students of modern political thought.

"Incredible Visual Illusions is the most comprehensive and amazing collection of optical illusions ever assembled, with almost three hundred different artworks. You will be amazed as some images flash and scintillate before your eyes, while others disappear right in front of you. Size and shape can lose their meaning, you'll see motion where there is no motion and the laws of perspective are turned on their heads! You won't believe your eyes!" --

Fascinating, profusely illustrated study explores the psychology and physiology of vision, including light and color, motion receptors, the illusion of movement, much more. Over 100 illustrations.

Visual illusions are compelling phenomena that draw attention to the brain's capacity to construct our perceptual world. The Compendium is a collection of over 100 chapters on visual illusions, written by the illusion creators or by vision scientists who have investigated mechanisms underlying the phenomena. --

In this volume, originally published in 1978, the authors survey the historical and contemporary research literature pertaining to two-dimensional visual-geometric illusions. They bring together much of the known data, summarising and evaluating theories that have been offered to explain these phenomena. Coren and Girgus provide a new conceptual framework that suggest that visual illusions are not unitary phenomena. Within this framework, illusions do not represent a breakdown in normal perceptual processing. Rather, it is proposed that each illusion is produced by a number of mechanisms operating at different levels in the visual information processing system. The book contains an extensive collection of illusion figures. It will be essential reading for all of those concerned with vision and visual perception, since it integrates the study of illusions into the main body of psychological and perceptual theories at the time.

Throughout the book, each image is accompanied by an explanation of how it works, the story behind it – when it was discovered or who invented it first – and the details of exactly why it fools the human brain. The book includes many new and previously unpublished illusions, as well as new adaptations of lesser-known illusions. It also includes works by well-known illusion artists such as Bridget Riley, Salvador Dalí, Giuseppe Arcimboldo, Oscar Reutersvärd, René Magritte, István Orosz and Rob Gonsalves. There are chapters on the following subjects: optical illusions from the real world (mirage, refraction, afterimage), ambiguous figures, impossible figures, color adaptation, moving illusions and paradoxical illusions.

This intriguing collection contains more than 275 optical illusions that appear to change before your eyes. Al Seckel carefully selected both well-known images, such as Shepard's tabletop, Wade's spiral, Ames room and Rubin's face/vase, and many lesser-known, but no less effective, illusions. Every type of optical illusion is here, along with notes about the science of each visual perception and how the illusions work. Among the baffling images and shapes are: Figure/ground illusions, in which one shape switches into another then back again Ambiguous figures Impossible objects Trompe l'oeil Stereo illusions. With illusions rendered in photography, artwork and computer imaging, and a huge variety of themes and effects, Optical Illusions dazzles both the mind and the eye.

Explore the secrets behind more than 30 of the world's most amazing visual puzzles, tricks, and illusions, and then learn how to make your own with this brand-new title in DK's popular Optical Illusions series. Much more than your average puzzle book, Optical Illusions 2 takes things to the next level, turning these mind-benders into exciting interactive and 3-D games with flaps, tabs, and pullouts, and putting logic and reasoning skills to the test for endless entertainment. You can even explore the science behind illusions and find out exactly how they boggle your brain and fool your eyes. Then, when you're ready to amaze others, use the instructions and tips and 10 template cards provided to draw puzzling patterns, play with perspective, and so much more. It's time to stretch your mental muscles to the max with Optical Illusions 2.

Why do we need two eyes? Why are all cats grey at night and appear to move faster the day? Why is the sky blue and the setting sun red? This book explains the multifaceted nature of perception, and discusses the mysteries of vision. It provides readers with experiments to help them discover optical illusions and the features of their own perception. Illusions of Seeing begins with a discussion on the essence of light and its perception to the human eye. It presents a comprehensive overview of the basic laws of human perception as well as the fundamentals of good gestalt. Subsequent chapters discuss geometric-optical illusions; the perception of form, brightness, and translucency and their interaction with each other; ambiguous perception, color vision, spatial vision. The book ends with a discussion of the perception of motion and its interaction with color, form, and spatial depth with a full chapter devoted to illusions in our everyday life. Consider this your travel guide in the marvelous world of sight, to experience a completely individual way to understand and improve your own perception. Illusions of Seeing will be of interest to psychologists, physicists, biologists, and undergraduate and graduate students within the field of cognitive psychology.