Evening talks at the Camera club on the action of light in photography
- Author(s): William De Wiveleslie Abney
- Category: Tools
- Publisher: London, S. Low, Marston & Compny
- Publish year: 1897
- ISBN: 9678000003546
- Number of Pages: 228
In the autumn of the year 1 895 I was requested by the Committee of the Camera Club to give some evening talks on "The Action of Light in Photography." They were given from notes, and illustrated by experiments, and I am led to believe they created a certain mount of interest. At the request of several members of the Camera Club I have in the first chapters endeavoured to put into a shape for publication what I believe I said, or, at all events, what I intended to say. It seemed, however, that the work would be incomplete unless it included an account of the experiments I had made on the action of feeble and intense light on a photographic plate. These, except in one case, had formed the subject of papers read before the Camera Club on different Thursday evenings, and so have been added to the more informal talks, with the hope that they will prove suggestive to the reader of further experiments. The photographer, as a rule, is not too fond of the theoretical considerations that underlie his craft. My aim always has been, and I hope always will be, to try and arouse an interest in the scientific side of it, as it is from it chiefly that future advances in photography can be built up. That there are many faults in the treatment of the subject no one is more aware than myself, but I have thought it better to keep to the original line I took in my evening talks than to travel in another. W. DE W. Abney. South Kensington, October, 1896.
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Copyright
EVENING TALKS AT THE CAMERA CLUB
PREFACE.
CONTENTS.
CHAPTER I. MOTIONS OF MOLECULES AND ATOMS
CHAPTER II. LENGTHS OF WAVES IN THE SPECTRUM.
CHAPTER III. ARSORPTION.
CHAPTER IV. EFFECT OF SMALL PARTICLES IN THE PATH OF LIGHT.
CHAPTER V. LIGHT IN THE DARK-ROOM.
CHAPTER VI. LIGHT SCATTERED BY LARGE PARTICLES.
CHAPTER VII. INTERFERENCE AND DIFFRACTION
CHAPTER VIII. PINHOLE IMAGES.
CHAPTER IX. THE COLOURS OF THIN FILMS.
CHAPTER X. MODES OF MEASURING GREY SURFACES AND OPACITIES.
CHAPTER XI. MEASUREMENT OF THE LUMINOSITY OF COLOURS.
CHAPTER XII. EFFECT OF TEMPERATURE ON SENSITIVENESS.
CHAPTER XIII. EFFECT OF INTERMITTANCE OF EXPOSURE.
CHAPTER XIV. EFFECT OF SMALL INTENSITIES OF LIGHT
CHAPTER XV. ACTION OF VERY INTENSE LIGHT ON PLATES.
CHAPTER XVI. MEASUREMENT OF SPECTRA.
APPENDIX.
EFFECT OF INTERMITTENT EXPOSURE.
EFFECT OF SMALL INTENSITIES OF LIGHT.
ACTION WITH INTENSE LIGHT.
A THEORY OF ALKALINE DEVELOPMENT
INDEX.