The thought of virtual reality has been around since 1965, when Ivan Sutherland expressed his ideas of
creating virtual or imaginary worlds. At MIT, he conducted experiments with three dimensional
displays. In 1969, he developed the first system to surround people in three dimensional displays of
information. Between the '70's and late '80's, the concept of virtual reality was mainly used by the
United States. The military used it as flight simulators to train pilots. The other countries in the world
did not show any interest in this technology until the late 1980's. Since then, virtual reality has
developed in many ways to become an emerging technology of our time.