The spectrocolorimetric and luminescent characteristics of porcelain containing neodymium oxide additives have been studied. It has been shown that an increase in whiteness occurs when the content of neodymium oxide is low, and when it is increased, the coloration process begins. The increase in the whiteness of porcelain is explained by a combination of two optical effects: an increase in reflection in the blue-blue region of the visible spectrum, due to the appearance of sensitizing luminescence of the neodymium ion in the region of 390 - 480 nm and a decrease in yellowness associated with the absorption of the neodymium ion in the range of 560 - 590 nm and a shift in the reflection maximum into the blue-green region of the spectrum. Tab. 1, ill. 7, bibliography: 12 titles.
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