![Sample our Engineering & Technology journals, sign in here to start your access, latest two full volumes FREE to you for 14 days]({"type":"image" , "src" : "/sda/5933/TOC-Subject-Sample-2021-Engineering-Tech.jpg"})
Abstract
Two-colour projection of the kind demonstrated by E. H. Land is described in relation to earlier processes. The conditions necessary for the appearance of the surprisingly wide range of colour are discussed, and it is shown that these can be produced without recourse to “natural image situations”. The influence of a number of factors is demonstrated. It is further shown that the modern concept of Adaptation, together with the known ambiguities of foveal vision, is sufficient to account for all these effects. The inherent limitations of the two-colour method ore demonstrated and the possibilities of two-colour and three-colour methods are compared. Some aspects of Land’s theory are discussed and an evaluation of his work is attempted.