Small Air Ions As Biologically Active Agents
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The concept of air ion effects on living forms is based on an unusual pattern. It has a “long past and a short history.” The observation that “certain winds occasion disorder and sickness” (Petersen, 1946) dates back to 400 b.c. and Hippocrates’s Greece. Failing to identify the specific mediators of weather sickness frustrated medical practice at the time, but does account for the long past of air ions. Their history was to wait another 2000 years. For it wasn’t until that property of air identified with biologic activity was formally specified and recorded in some fashion, that the phenomenon would be accorded any true history. It began in the mid-1700s when, on opposite sides of the Atlantic, Benjamin Franklin (1752), in America, and d’Alibard (1752), in France, independently demonstrated the existence of atmospheric electricity.
KeywordsCorona Discharge Barley Seedling Tracheal Tissue Flicker Fusion Frequency Simple Visual Reaction Time
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