
196 Virtual Reality: Concepts and Technologies
given in the table of figure 10.2 (Youngblut, 1996). Other technologies, like rheo-
logical fluids that change stiffness under the application of an electric or magnetic
field, are still being investigated. Technologies to be used for medical applications,
like electro-tactile and neuromuscular stimulators, are distinguished by their invasive
nature. Just like the capture components, the actuation components are manufactured
according to the nature of the desired actuation (optical, magnetic, thermal, mechan-
ical or chemical) and according to the power used: thermal, magnetic, electric or
chemical.
Here ...