To sum up:
1. The experimental work has determined the exact colour changes occurring in the Sabouraud pastille when exposed to X-rays.
2. These experiments have established a permanent standard for Tint B, which matches the pastille exactly, does not fade, is easily kept clean. These coloured glasses can be readily and accurately reproduced, as they are standardized spectroscopically by a firm who specialise in such work. The standard will therefore remain constant so long as the Sabouraud emulsion remains unaltered.
3. Glasses may be prepared of the correct tint for any fraction or multiple of this dose up to 2 B or 10 H.
4. Either daylight or electric light can be used.
5. The optical instrument itself, by cutting off extraneous light, greatly assists the colour comparisons, so that the practical error need never exceed 10 per cent.
INDEX
- Abnormal light, [13]
- Analysis of white light, [11], [13]
- Arbitrary scales, [9]
- Artists and scientists, [1], [2]
- Beam of white light, [7], [11]
- Black units, [16], [23]
- Black, ideal, [15], [11]
- Blood curves, [33]
- Code of laws, [7]
- Colour charts, [31], [39]
- education, [59]
- equivalence, [10]
- nomenclature, [17], [21]
- qualitative, [17], [19], [24]
- quantitative, [24]
- scales, [20], [29]
- standardization, [20], [69]
- theories, [2], [3]
- Coloured surfaces, [44]
- Colours, complex, [18]
- sadder than standards, [25]
- simple, [17]
- Corbett, Dr. Dudley’s, radiometer, [83]
- Daylight colours, [24], [84]
- measurement, [14]
- Diffused light, [10], [43]
- Direct lights, [46]
- Dulled colour, [10], [18-26], [36]
- Equivalent colour units, [7], [9], [29]
- Fog, whiteness of, [10]
- Glass standards, [20]
- Human blood curves, [82]
- Laws of colour, [7]
- Light, [11], [13], [42], [45-46], [81-84]
- abnormal, [8]
- brighter than standards, [14], [27]
- direct, [46]
- for colour work, [42]
- intensities, [42], [43]
- white, [14]
- Lovibond’s new colour theory, [5]
- Matching colours brighter than standards, [18]
- complex colours, [17]
- Measuring and naming colours, [21]
- Monochromes, [17], [19]
- Munro, Dr., [34]
- Neutral tint, [18], [24], [26]
- [90]North light, [15]
- Past theories, [3]
- Photographic energies, [53]
- Physical colour constants, [8]
- Pigmentary black, [15], [71]
- Primary colours, [1]
- Prismatic spectrum colours, [29]
- Qualitative analysis of colour, [17], [19], [24]
- Quantitative analysis of colour, [24]
- Radiometer, [83]
- Rate of colour absorption, [8]
- Rays, six colour, [7]
- Red ray, [41]
- Scales, arbitrary colour, [9]
- coloured, [10], [20]
- cross checking of, [9]
- Scientists and artists, [1], [2]
- Sea fog, [10]
- Specific colour, [32]
- Spectrum colours, [4], [18], [36]
- Three colours, [10], [57]
- Time, appreciation of colour by, [42]
- Ultra violet, [32], [40]
- Unit, checking of, [9]
- Unit, neutral tint, [18], [24], [26]
- Wave length position, [37], [38]
- White light, [11], [13]