“Lopsided atom” theory: (Industrial Laboratories, Vol. 1, No. 2)

• Publisher: Elsevier Science
• Year: 1951
• Tongue: English
• Weight: 101 KB
• Volume: 251
• Category: Article
• ISSN: 0016-0032
• DOI: 10.1016/0016-0032(51)90942-8

✦ Synopsis

assembly designed to split the beam into three parts of equal intensity, Mr. Sziklai explained.

The three beams then pass through three filters, each sensitive to a range of wavelengths corresponding to the basic color components.

The "brain" of the instrument starts with three photocells, one for each filter. The photocells convert the light energy to electrical energy which passes through circuits, each of a different design, to compensate for the mathematical dissimilarities between the three color components.

Finally, a corrected value for each component is read on microammeters.

The readings are in terms of the three theoretical basic components, as defined by the International Commission of Illumination, by which any color in nature can be described in standard terms. The filters select the closest real approximations to the theoretical primaries, which are referred to in calorimetry as X, Y and 2. Then the electronic circuits mathematically "shape" the actual values, transforming them to the theoretical values of I. C. I. color specifications.

The theoretical color values have no counterparts in the realm of actual colors. The use of the theoretical primaries is necessary in calorimetry to do away with the use of negative quantities of light in the mathematics of color definition.

However, by employment of the theoretical primaries, a practical system of color measurement is attained.