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 >
Brahmagupta, a Hindu mathematician and astronomer, first used a dot underneath other numbers to represent the number zero in 628 A.D. He was the first to develop additive and subtractive operations that use zero.Full Answer >
No single person invented algebra. The roots of algebra extend to the ancient Babylonians, who first developed mathematical techniques to solve problems using algorithms. Later work by Greek, Persian and Indian mathematicians further extended these techniques and laid the foundations for modern algebra.Full Answer >
Several products and procedures were invented in 1974. One example is the Post-It Note, which was created by American Arthur Fry. Since their invention, Post-It Notes have been sold in over 100 countries across the world and are still used over 40 years later.Full Answer >