TV was demonstrated at a Worlds Fair in 1922. But broadcast TV began in the UK in 1932 and sometime later in the US. Radio was pretty pervasive, but TV was for a tiny minority (fewer than 100 sets in Britain in 1934, none at all in Mexico until 1951) until after WWII.
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TV was demonstrated at a Worlds Fair in 1922. But broadcast TV began in the UK in 1932 and sometime later in the US. Radio was pretty pervasive, but TV was for a tiny minority (fewer than 100 sets in Britain in 1934, none at all in Mexico until 1951) until after WWII.