Electromagnetic radiation with frequencies in the ultraviolet and visible region can be absorbed by molecules. 分子能吸收频率在紫外和可见光区的电磁辐射(EMR)。
The harmfulness of electromagnetic radiation and the principle of electromagnetic shielding are introduced in this paper. 介绍了电磁辐射(EMR)的危害以及发展电磁屏蔽材料的意义,阐述了电磁屏蔽的原理。