Editing 1929 in science (section)

==Communications==
* June 27 – The first public demonstration of [[color television]] is held by [[Herbert E. Ives]] and colleagues at [[AT&T Corp.|AT&T]]'s [[Bell Labs|Bell Telephone Laboratories]] in [[New York City|New York]]. The first images are a bouquet of roses and an [[American flag]]. A mechanical system is used to transmit 50-line images to [[Washington, D.C.|Washington]].
* August 20 – First transmissions of [[John Logie Baird]]'s experimental 30-line television system by the [[British Broadcasting Corporation]].<ref>{{cite book|title=The Hutchinson Factfinder|publisher=Helicon|year=1999|isbn=978-1-85986-000-7}}</ref>
* November – [[Vladimir Zworykin]] takes out a [[patent]] for color television.
* First practical [[coaxial cable]] patented by [[Lloyd Espenschied]] and [[Herman Affel]] of [[Bell Labs]].
* [[Rudolf Hell]] receives a patent for the ''[[Hellschreiber]]'', an early [[fax]] machine.