Category: Architecture
Eventually one of the results of application to the analysis and measurement of the phenomena of light, color, lighting, and vision is a firmly entrenched conviction of the inadequacy of physical measurements as a means for representing what is perceived. Physical measurements...
Eventually one of the results of application to the analysis and measurement of the phenomena of light, color, lighting, and vision is a firmly entrenched conviction of the inad...
2. Part 2In vision judgments are quickly made and the process apparently is largely outside of consciousness. Higher and more complex visual judgments pass into still higher and more com...
3. Part 3The distribution of rods and cones over the retina is very important. In the fovea centralis--the point of the retina on the optical axis of the eye--is a slight depression much...
4. Part 4Wheatstone discovered that the dissimilar pictures of an object or scene, when united by means of optical systems, produce a visual effect similar to that produced by the actual...
5. Part 5A striking illusion involving perspective, or at least the influence of angles, is shown in Fig. 22. Here the diagonals of the two parallelograms are of equal length but the one...
6. Part 6If oblique lines are extended across vertical ones, as in Figs. 45 and 46, the illusion is seen to be very striking. In Fig. 45 the oblique line on the right if extended would m...
7. Part 7Some have held that the perception of depth, that is, of a relative distance, arises from the process of unconsciously running the point of sight back and forth. However, this v...
8. Part 8Doubtless a number of factors may play a part in this phenomenon. It appears possible that there is a rapid spreading of the excitation over the retina extending quite beyond th...
9. Part 9_Color-sensibility of the Retina._--This aspect was touched upon in Chapter III, but the differences in the sensibility of various areas of the retina to various colors are of s...
10. Part 10In the foregoing, associations play a prominent role. The sky has been blue throughout the numberless centuries during which the human organism evolved. The blue-sky during all...
11. Part 11In discussing the great illusions of nature, it appears appropriate to introduce the mirage. This is not due to an error of sense of judgment. The eye sees what is presented but...
12. Part 12Perhaps a brief statement regarding the modern _isms_ in art may be of interest. In considering some of the extreme examples, we must revise our idea that art is or should be al...
13. Part 13Thus studies of Nature reveal the importance of general hue, the necessity for broken color or pattern, the fact that black spots simulate shadows or voids, the compensation for...
14. Part 14The convoy system is well known to the reader. This saved many vessels from destruction. Vessels of the same speed were grouped together and steamed in flocks across the Atlanti...
15. Part 15The foregoing are only a few references indicated in the text. Hundreds of references are available and obviously it is impracticable to include such a list. The most fruitful s...