The invention of TV was a gradual process starting as early as the 1820s, but it was not until 1927 that Philo Farnsworth produced the first television picture. Even so, David Sarnoff of RCA is remembered as the father of television because he was first to market it.Know More
Broadcast television began experimentally in the early 1930s. At the time, these broadcasts consisted of very low-quality images of wrestling, music and dance. RCA unveiled NBC TV studios at the 1939 World's Fair, and CBS began broadcasting a few months later.
It was not until 1947 that television began to really enter the mainstream led by "The Ed Sullivan Show," "Candid Camera," "Howdy Doody," "Philco Playhouse" and "Kulka, Fran & Ollie."Learn more about Inventions
Yogurt has been part of the human diet since around 6000 to 5000 B.C and was first made in Central Asia. Yogurt sold in its frozen form was invented in the early 1970s by a dairy operator from New England named H.P. Hood.Full Answer >
Modern ice hockey rules were created by Canadian athlete, journalist and lawyer James George Aylwin Creighton. The first game of modern ice hockey was played in 1875 in Montreal, Canada. Ice hockey likely evolved from field hockey played in Northern Europe.Full Answer >
Algebra, in its earliest form, was first used by the Babylonians as early as 1700 B.C. It is possible that algebra was used before this time, but historical records are incomplete. However, the algebra used by early civilizations was much more rudimentary than the algebra currently in use today.Full Answer >
The concept of mapping the Earth using two sets of parallel lines, one running from north to south and the other from east to west, was first utilized by the Greek Eratosthenes. Hipparchus, another Greek, was the first to use these lines as coordinates for specific locations.Full Answer >