Short answers, pulled from the story.
Philo Farnsworth's image dissector camera tube transmitted its first image, a simple straight line, on the 7th of September 1927 in San Francisco. His press demonstration on the 3rd of September 1928 is widely regarded as the first electronic television demonstration. A 1935 U.S. Patent Office decision found priority of invention for Farnsworth over Vladimir Zworykin.
The Russian scientist Constantin Perskyi first used the word television in a paper read in French at the first International Congress of Electricity in 1900. The congress ran from the 18th to the 25th of August 1900 during the International World Fair in Paris.
John Logie Baird gave the first public demonstration of televised silhouette images in motion at Selfridges department store in London on the 25th of March 1925. By the 26th of January 1926, he demonstrated a face in motion before members of the Royal Institution, widely regarded as the world's first true public television demonstration. His system used a Nipkow disk with 30 holes, producing 30 scan lines.
The first U.S. color broadcast, the first episode of the live program The Marriage, occurred on the 8th of July 1954. Color sets did not sell in large numbers until the mid-1960s, aided by the color transition of 1965 when over half of network prime-time programming was announced for color. Sales of color sets surpassed black-and-white sets in 1972.
Digital television became practical in the early 1990s with the adoption of DCT video compression, which overcame the high bandwidth needs of uncompressed digital video. The U.S. company General Instrument demonstrated a digital television signal in June 1990, prompting the FCC to delay its decision until a digital standard could be developed.
In 2013-79% of the world's households owned a television set. That same year, about 7% of U.S. households used an antenna for terrestrial reception, reflecting the decline of over-the-air viewing after the spread of cable in the 1970s and 1980s.
British writer Arthur C. Clarke proposed a worldwide communications system using three equally spaced satellites in the October 1945 issue of Wireless World. The first satellite television signals from Europe to North America were relayed via the Telstar satellite on the 23rd of July 1962 and watched by over 100 million people.