The author presents three attributes of VR: simulation, interaction and imagination and presents a proposal that VR is a huge aggregation and it should be taken as a new subject.
This paper discusses the definition of Virtual Reality(VR) as following.At first.Analyzing the examples of Virtual Reality Application System and related definitions that people presented in the past.And then the author presents three attributes of VR: simulation,interaction and imagination.At the same time the author indicates: the VR system is simulating and imitating all things in essence;the VR system is transformed by an operator in the system,which describes the relationship between VR and human;a reasonable imaginative space is offered in VR system,so as to operate the RV system availably.Finally the author presents a proposal that VR is a huge aggregation and it should be taken as a new subject.