This paper provides a qualitative analysis of one of the possible channels of negative entropy (negentropy) to ensure the evolution of biological systems. In particular, it is shown for the first time that a periodically changing flow of equilibrium radiation carries a reduced entropy content in comparison with a constant flow of the same power. This conclusion is made based on the analysis of the Shannon entropy time dependence graph for the model under consideration. The study relevance is due to the well-known contradiction between the statement of the second principle of thermodynamics about the tendency of closed systems to a state with maximum entropy (chaos) and Darwin’s evolutionary theory describing the complexity of biological systems. This problem is worked out in many aspects and devoid of the status of an inexplicable paradox. However, a number of important questions, including the sources of negative entropy, remain open. As a function describing the frequency of incident radiation, a simple harmonic is chosen, which does not quite correspond to the daily change in illumination observed on the Earth, but allows us to draw conclusions about the qualitative nature of its influence. The result obtained can be of great importance for evaluating the equilibrium parameters and stability of open thermodynamic systems.

本文对负熵（negentropy）的可能渠道之一进行了定性分析，以确保生物系统的进化。特别是，第一次表明，与相同功率的恒定流相比，周期性变化的平衡辐射流携带的熵含量减少。该结论是基于对所考虑模型的香农熵时间相关图的分析得出的。研究相关性是由于热力学第二原理关于封闭系统趋向于具有最大熵（混沌）状态的陈述与达尔文描述生物系统复杂性的进化理论之间的众所周知的矛盾。这个问题是多方面解决的，没有莫名其妙的悖论状态。然而，一些重要的问题，包括负熵的来源，仍然悬而未决。作为描述入射辐射频率的函数，选择了一个简单的谐波，它与地球上观察到的每日光照变化并不完全对应，但可以让我们得出关于其影响的定性性质的结论。所得结果对于评估开放热力学系统的平衡参数和稳定性具有重要意义。