⑴ 在機器人領域，haptic技術 和tactile技術的區別
'Tactile' is touch based (so what we feel by means of the light sensors that we have in our hands and bodies which enable us to feel the texture of things) unlike the bigger force felt by the arm (see Haptic); whereas 'Haptic' is force based (so the greater force that we can feel with our arm muscles when holding heavy objects).
As a typical example, let's say at two different instances, we hold in our hands 2 different heavy objects of the same weight, but which are composed of different materials, especially at the exterior (so let's say e.g. a 2 Kg iron ball in the first instance, and a 2 Kg iron ball coated with leather or rubber, say). Thus in those two cases, even though our arm would feel the same "haptic" force for both the (all-iron & leather-coated) balls; but yet because of their unique different textures, each of them would possess a unique different "tactile" (touch) sensation associated with it.