作者: K. LONSDALE , H. SMITH
DOI: 10.1038/148112B0
关键词:
摘要: Sir Robert Robertson, Dr. J. Fox and A. E. Martin showed in 19341 that addition to the normal type of diamond, which is always optically anisotropic, there a rarer much more nearly isotropic transparent both infra-red ultra-violet radiation.