Editing 1947 in science (section)

==Technology==
* February 21 – [[Edwin H. Land]] demonstrates the first practical [[instant camera]], the [[Land Camera]], in New York City. It will first be on commercial sale in December 1948.
* November 13 – First [[AK-47]] [[selective fire|selective-fire]], [[gas operated|gas-operated]] [[assault rifle]] produced in the Soviet Union by [[Mikhail Kalashnikov]].
* November 17–December 23 – [[John Bardeen]] and [[Walter Brattain]] working under [[William Shockley]] at [[AT&T Corporation|AT&T]]'s [[Bell Labs]] in the United States demonstrate the [[transistor]] effect.<ref>{{cite web|title=November 17 – December 23, 1947: Invention of the First Transistor|publisher=[[American Physical Society]]|url=http://www.aps.org/publications/apsnews/200011/history.cfm|accessdate=2013-01-16}}</ref>
* December 11 – A hexagonal [[cellular telephone]] network is proposed by [[Douglas H. Ring]] and [[W. Rae Young]] of [[Bell Labs]] for mobile phones in vehicles.<ref>{{cite web|url=http://www.privateline.com/archive/Ringcellreport1947.pdf|date=1947-12-11|title=Mobile Telephony – Wide Area Coverage|first=D. H.|last=Ring|archive-url=https://web.archive.org/web/20120207062016/http://www.privateline.com/archive/Ringcellreport1947.pdf|url-status=dead|archive-date=2012-02-07|accessdate=2018-07-10}}</ref>
* The [[clavioline]] is invented by [[Constant Martin]].
* The [[disposable nappy]] is invented by [[Valerie Hunter Gordon]].
* [[Raytheon]] produces the first commercial [[microwave oven]].