Air Ionization: When Negative Can Be Positive in Built Spaces

In 1902, physicist Philipp Lenard discovered that the breaking of water droplets in waves, waterfalls, rain, or mist releases negative ions into the air. This occurs because, upon breaking, the droplets separate their electrical charges: electrons, which are smaller and lighter, adhere to suspended particles in the air, while positive charges remain in the water or dissipate quickly. This phenomenon increases the concentration of negative ions in the environment, which can directly influence our body and mind, interacting with neurotransmitters and essential cellular functions. It is no coincidence that many people report feelings of well-being, energy, and mental clarity after spending time at beaches, waterfalls, or forests. In Japan, this connection with nature is explored in the practice of Shinrin-Yoku, or "forest bathing," which promotes relaxation and revitalization simply through contact with the natural environment.