What is interactive art?

A form of art where the spectator is involved by the artist to achieve the art's purpose. This can be done by letting the visitor or observer "walk" around, in and on the art installation. Others may ask the spectator or the artist to become part and parcel of their artwork. Works in this category often feature computers, sensors and interfaces to respond to meteorological changes, heat, motion or other input types programmed by the maker to respond to by them.