when did tv become available to the public
Television Television became available in crude experimental forms in the late 1920s, but it would still be several years before the new technology was marketed to consumers. After World War II, an improved form of black-and-white TV broadcasting became popular in the United States and Britain, and television sets became commonplace in homes, businesses, and institutions. During the 1950s, television was the primary medium for influencing public opinion.[1] In the mid-1960s, color broadcasting was introduced in the US and most other developed countries. The availability of multiple types of storage media such as Betamax, VHS tape, local disks, DVDs, flash drives, high-definition Blu-ray Discs, and digital video recorders have enabled viewers to watch prerecorded material—such as movies— at home on their own time schedule. For many reasons, the storage of television and video programming now occurs on the cloud. At the end of the first decade of the 2000s, digital television transmissions greatly increased in popularity. Another development was the move from standard-definition television (SDTV) (576i, with 576 interlaced lines of resolution and 480i) to high-definition television (HDTV), which provides a resolution that is substantially higher. HDTV may be transmitted in various formats: 1080p, 1080i and 720p. Since 2010, with the invention of smart television, Internet television has increased the availability of television programs and movies via the Internet through streaming video services such as Netflix, Amazon Video, iPlayer, Hulu, Roku and Chromecast.
The Wizard of Oz on television From the beginning The Wizard of Oz was telecast in color, although few people owned color television sets in 1956. Except for 1961, all U.S. telecasts have been in color, an effect that seemed much more striking in the early 1960s, when there were still relatively few color programs on television. It was not televised in color in 1961 because color telecasts had to be paid for by their sponsors, who declined to do so that year.[15][16] Between 1956 and 1965, the Wizard of Oz showings were rare exceptions to the black and white program schedule at CBS. During this period, CBS had the ability to broadcast programs in color, but generally chose not to do so unless a sponsor paid for a film or program to be shown in color. During this period, the competing network NBC was owned by RCA, which by 1960 manufactured 95% of the color sets sold in the U.S. Hence, CBS perceived that increased use of color broadcasting would primarily benefit its rival by promoting sales of RCA color television sets.