PP Graphene Schumann Eye MaskPP Graphene (PP Shm x) Medical Grade Schumann Blindfold, crafted with revolutionary graphene technology and inspired by the groundbreaking Schumann Wave theory. Schumann Technology, first proposed by German physicist Winfried Otto Schumann, revolves around the concept of a natural electromagnetic resonance occurring between the Earth's surface and the ionosphere. This resonance, with a frequency of approximately 8Hz, has been linked to promoting