VHS (short for Video Home System) is a standard for consumer-level analog video recording on tape cassettes. From the 1950s, magnetic tape video recording became a major contributor to the television industry, via the first commercialized video tape recorders (VTRs). At that time, the expensive devices were used only in professional environments such as television studios and medical imaging (fluoroscopy). In the 1970s, videotape entered home use, creating the home video industry and changing the economics of the motion picture and television businesses. The television industry viewed videocassette recorders (VCRs) as having the power to disrupt their business, while television users viewed the VCR as a means to take control of their viewing experiences.