Art Alinari, age 17, of Portland, Ore., for his question:

WHO INVENTED THE ICONOSCOPE?

Iconoscope is the name of a cathode ray tube which first made possible television transmission. It was invented by a Russian born American electronics engineer and physicist named Vladimir Zworykin. He received a Ph.D degree from Pennsylvania's University of Pittsburg in 1926.

As an employee of Westinghouse Electric Company, Zworykin developed the iconoscope, an electronic tube that converted light rays into electric signals. The signals could then be changed into radio waves.

Zworykin was put in charge of a group of young engineers. The team worked on the development of the TV camera and picture tube.

In 1929, Zworykin became the director of electronics research for the Radio Corporation of America and in 1947 was made a vice president of the company.