1. the ratio between the maximum torque exerted on a magnet situated 
          in a magnetic field (whenever electric current flows) and the strength 
          of that field.
        2. the ratio between the maximum amount of electro-chemical change 
          within a collection of brains as they experience new ideas and the strength 
          of those ideas. 
        Touch, along with many other senses, is as a catalyst for this change.