The magnitude of a star as measured through the infrared M filter of the Johnson photometry system. It has an effective wavelength of 5030 nm and a bandwidth of 1060 nm.
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。