Editing 1942 in science (section)

==Technology==
* March – [[Isaac Asimov]]'s [[Three Laws of Robotics]] are introduced in his short story "[[Runaround (story)|Runaround]]" published in ''[[Analog Science Fiction and Fact|Astounding Science-Fiction]]''.
* July 18 – [[Messerschmitt Me 262]] [[jet aircraft]] prototype makes its first flight under jet power.
* August 11 – Composer [[George Antheil]] and actress [[Hedy Lamarr]] are granted a [[United States]] [[patent]]<ref>[https://patents.google.com/patent/US2292387 #2,292,387.]</ref> for a [[frequency-hopping spread spectrum]] communication system intended to make radio-guided [[torpedo]]es harder to detect.<ref>{{cite magazine|first=Tony|last=Long|url=https://www.wired.com/thisdayintech/2011/08/0811hedy-lamar-george-antheil-torpedo-patent|title=This Day in Tech: Aug. 11, 1942: Actress + Piano Player = New Torpedo|magazine=[[Wired (magazine)|Wired]]|date=2011-08-11|accessdate=2012-09-26}}</ref>
* October 2 – The first American-built jet aircraft, the [[Bell P-59 Airacomet]] fighter prototype, makes its first official flight.<ref>{{cite book|last=Angelucci|first=Enzo|title=The American Fighter: the Definitive Guide to American Fighter Aircraft from 1917 to the present|location=New York|publisher=Orion Books|year=1987|page=50}}</ref>
* November 26 – First operational military [[Bailey bridge]] erected by British [[Royal Engineers]] over the [[Medjerda River]] near [[Majaz al Bab]] in [[Tunisia]].<ref>{{cite book|last=Harpur|first=Brian|title=A bridge to victory: the untold story of the Bailey Bridge|publisher=HMSO|location=London|year=1991|isbn=0117726508|page=69}}</ref>
* [[Walter Bruch]] operates a [[closed-circuit television]] system to monitor the V-2 rocket launches.<ref>{{cite book|authorlink=Tim Harford|first=Tim|last=Harford|title=The Next Fifty things that made the modern economy|location=London|publisher=Bridge Street Press|year=2020|isbn=9781408712665|pages=151–2}}</ref>