Following is the daily "Profile America" feature from the U.S. Census Bureau:
ON THE AIR
Profile America — Monday, August 29th. Two trailblazers in early electronics, whose inventions changed pastimes the world over, were born in August. One was television pioneer Philo Farnsworth, born 110 years ago. He conceived the idea of television broadcasting while still in high school and realized it at the age of 21. The other was Lee de Forest, born in late August, 1873. The Yale doctor of physics invented the three-element vacuum tube, a step toward creating radio. Holding hundreds of patents, he was an innovator in not only radio and television, but also film, as he synchronized sound to motion pictures. Over 217,000 Americans work in the thousands of radio and TV broadcasting establishments advanced by Farnsworth and de Forest. You can find more facts about America from the U.S. Census Bureau online at www.census.gov.
Vacuum tube: http://www.leedeforest.org/The_Audion.html
de Forest: http://www.leedeforest.org/Home.html
Radio & TV employment/NAICS 5151: http://factfinder.census.gov/bkmk/table/1.0/en/BP/2013/00A1//naics~5151
Profile America is produced by the Center for New Media and Promotion of the U.S. Census Bureau. Statistics and accounts drawn from cited non-Census sources are employed for illustrative or narrative purposes, and are not attested to by the U.S. Census Bureau. These daily features are available as produced segments, ready to air, on the Internet at http://www.census.gov (look for "Audio" in the "Library" pull-down menu).
Source : prnewswire.com