Studies of Iridescent Colour, and the Structure Producing it. II. Mother-of-Pearl

L. Rayleigh
1923 Proceedings of the Royal Society A  
P late 7. Pig. V. Section of an ordinary white chlorate crystal chosen at random, under polarised light, X360 diameters. Note the two isolated twin strata. Pig. YI. Section of a portion of the above (No. Y) after heating to above 250° C. Note the complex twin structure produced. X 360 diameters. Pig. YII. Spectrum of the reflexion from No. YI.
doi:10.1098/rspa.1923.0025 fatcat:yb336r62wzhcdb3sgtlpe5c4gi