The uncanny resemblance of the global distribution of all experimentally known atomic spectral lines to the Planckian spectral distribution associated with black body radiation at a temperature of $T\approx 9000\mathrm{K}$ is reported. This value coincides with the critical temperature of equilibrium between the respective densities of radiation and matter in the early universe.

中文翻译：

---

早期宇宙中原子光谱线的分布与辐射-物质-平衡之间的可能联系

所有实验已知的原子光谱线的整体分布与在60摄氏度的温度下黑体辐射相关的普朗克光谱分布具有不可思议的相似之处。 $Ť\approx 9000\mathrm{ķ}$被报道。该值与早期宇宙中辐射和物质的各自密度之间的平衡临界温度一致。