Possible experiments on the observation of the $\mathcal{P,T}$ - odd Faraday effect (rotation of polarization plane for the light, propagating through a medium in the presence of an external electric field, $\mathcal{P}$ - is the space inversion, $\mathcal{T}$ - is the time reflection) caused by the electron electric dipole moment in atoms and molecules, are discussed theoretically. An observation is assumed to be performed on the basis of modern intra-cavity absorption spectroscopy (ICAS) combined with atomic (molecular) beam techniques. The $\mathcal{P,T}$ - odd optical rotation is due to the linear Stark splitting of atomic or molecular levels. This leads to the difference between the refractive indexes for the right and left circularly polarized photons.

可能的观察实验 $\mathcal{磷、磷}$ - 奇法拉第效应（光的偏振面旋转，在存在外部电场的情况下通过介质传播， $\mathcal{磷}$ - 是空间反转， $\mathcal{吨}$- 是时间反射）由原子和分子中的电子电偶极矩引起的，理论上讨论。假设在现代腔内吸收光谱 (ICAS) 结合原子（分子）束技术的基础上进行观察。这$\mathcal{磷、磷}$- 奇数旋光是由于原子或分子水平的线性斯塔克分裂。这导致右圆偏振光子和左圆偏振光子的折射率之间存在差异。