pioneer patent
21Philo Farnsworth — Infobox Person name = Philo Taylor Farnsworth image size = caption = 1983 United States postage stamp honoring Farnsworth birth name = birth date = birth date|1906|8|19 birth place = Beaver, Utah, USA death date = death date and… …
22Wright brothers — Orville Wright Photo: 1903 Born August 19 …
23Chang Yi Wang — Born December 19, 1951 (1951 12 19) (age 59) Taip …
24Sound film — …
25Science and invention in Birmingham — Birmingham is the second largest city in the United Kingdom. It is one of the country s principal industrial centres and has an impressive history of industrial and scientific innovation.16th century1547: Although no record is kept to indicate… …
26Enea Bossi, Sr. — Infobox Aviator name= Enea Bossi lived=29 March 1888 1963 image size= caption=Portrait of Enea Bossi full name= Enea Bossi place of birth= Milan nationality= Italian, American place of death= cause of death= spouse=Flora Kehrer relatives= known… …
27Laserdisc — Not to be confused with disk laser, a flat configuration solid state laser. Not to be confused with VCD, DVD, or Blu ray, optical disc formats employing digital video encoding. Not to be confused with CED, a coincident but incompatible analogue… …
28Guglielmo Marconi — Born 25 April 1874(1874 04 25) Palazzo Marescalchi, Bologna …
29Alexander Graham Bell — Infobox Person name = Alexander Graham Bell image size = 225px caption = Portrait of Alexander Graham Bell c. 1910 birth date = 3 March 1847 birth place = Edinburgh, Scotland, UK death date = death date and age|1922|8|2|1847|3|3|df=y death place …
30Robert Moog — Born May 23, 1934(1934 05 23) New York City, New York Died August 21, 2005(2005 08 21 …
