A relationship between the period and colour of a pulsating variable and its luminosity. It is an extension of the period–luminosity relation that takes differences in colour (i.e. temperature) into account.
科学参考收录了60776条科技类词条,基本涵盖了常见科技类参考文献及英语词汇的翻译,是科学学习和研究的有利工具。