Editing 1919 in science (section)

==Technology==
* First crossings of the Atlantic Ocean by air.
** May 8–27 – United States Navy [[Curtiss Aeroplane and Motor Company|Curtiss]] [[flying boat]] [[NC-4]] commanded by [[Albert Cushing Read]] makes the first [[transatlantic flight]], from [[Naval Air Station Rockaway]] to [[Lisbon]] via Newfoundland and the [[Azores]].
** June 14–15 – A [[Vickers Vimy]] flown by [[John Alcock (aviator)|John Alcock]] and [[Arthur Whitten Brown]] makes the first [[Transatlantic flight of Alcock and Brown|nonstop transatlantic flight]], from [[St. John's, Newfoundland]], to [[Clifden]], Ireland.
** July 2–6 – British [[airship]] [[R34 (airship)|R34]] makes the first transatlantic flight by dirigible, and the first westbound flight, from [[RAF East Fortune]], [[Scotland]], to [[Mineola, New York]].
*May 29 – [[Charles Strite]] files a United States [[patent]] for the electric pop-up bread [[toaster]].<ref>{{cite book|author=Charles Panati|title=Panati's Extraordinary Origins of Everyday Things|url=https://books.google.com/books?id=utroDAAAQBAJ&pg=PA118|date=15 August 2016|publisher=Book Sales|isbn=978-0-7858-3437-3|pages=118}}</ref>
*October 17 – Dr. [[Frank Conrad]] begins broadcasting from [[KDKA-AM|8XK]] in [[Pittsburgh]] (United States).
* [[Lee De Forest]] files his first United States patent for the [[Phonofilm]] [[sound-on-film]] process.
* United States firearms designer [[John Browning]] finalizes the design of the [[M1919 Browning machine gun]].
* United States firearms designer [[John T. Thompson]] finalizes the design of the [[Thompson submachine gun]].
* A United States patent for the self-folding [[Collar (clothing)|shirt collar]] is obtained by the [[PVH (company)#History|Phillips-Jones Corporation]].