The year1943 inscience andtechnology involved some significant events, listed below.

• July 21 – Living specimens ofMetasequoia glyptostroboides, the Dawn Redwood, previously known only as aMesozoicfossil, are located in China.^[1]
• TheUniversity of Oxford acquires the nearbyWytham Woods which become an important centre for research intoecology in England.
• David Lack's studyThe Life of the Robin is published in England.

• March–December – Construction of British prototype Mark IColossus computer, the world's first totallyelectronic programmable computing device, at thePost Office Research Station,Dollis Hill, to assist incryptanalysis atBletchley Park.^[2]
• May 17 – TheUnited States Army contracts with theUniversity of Pennsylvania's Moore School to develop theENIAC.

• February 20 – Thecinder conevolcanoParícutin begins to appear in Mexico, giving volcanologists an unusual opportunity to observe its complete life cycle.^[3][4][5]

• January 1 –Project Y, theManhattan Project's secret laboratory atLos Alamos, New Mexico, for development and production of thefirst atomic bombs under the direction ofJ. Robert Oppenheimer, begins operations.

• March 23 – The drugsVicodin andLortab are made in Germany.
• October 19 – Theantibioticstreptomycin (the first antibiotic remedy fortuberculosis) is first isolated byAlbert Schatz in the laboratory ofSelman Abraham Waksman atRutgers University in the United States.^[6]
• December –Winston Churchill's recurringbacterial pneumonia is successfully treated with thesulphapyridineM&B 693, a first-generationsulphonamideantibiotic.^[7]
• A golden mould,Penicillium chrysogenum, growing on an Americancantaloupe inPeoria, Illinois, is found to be ideal for mass production ofpenicillin.^[8]

• Abraham Maslow proposes theHierarchy of Needs theory ofpsychology in his paper "A Theory of Human Motivation".

• April 16–19 –Albert Hofmann discovers thehallucinogenic properties oflysergic acid diethylamide.^[9]
• Leo Kanner of theJohns Hopkins Hospital first publicly adopts the termautism in its modern sense in English in referring toearly infantile autism.^[10]
• Warren S. McCulloch andWalter Pitts publish "A Logical Calculus of the Ideas Immanent in Nervous Activity" inBulletin of Mathematical Biophysics, considered seminal inneural network theory.^[11]
• Dr.Willem J. Kolff builds the firstdialysis machine, in theoccupied Netherlands.^[12]
• New Zealand-born BritishanaesthetistRobert Macintosh introduces his new curvedlaryngoscope blade fortracheal intubation.^[13][14]

• March 5 – TheGloster Meteor, the first operational militaryjet aircraft for theAllies of World War II, has its first test flight, in England.
• May 16–17 –Operation Chastise: BritishRoyal Air Force attacksGermandams using 'bouncing bombs' designed byBarnes Wallis.^[15]
• Lyle Goodhue andWilliam Sullivanpatent the refillableaerosol spray in the United States, for use withmosquito–repellant.^[16]
• Krueger flaps for aircraft wings are invented byWerner Krüger and evaluated in the wind tunnels inGöttingen.

• Nobel Prizes
  • Physics –Otto Stern
  • Chemistry –George de Hevesy
  • Medicine –Carl Peter Henrik Dam,Edward Adelbert Doisy

• January 14 –Ralph Steinman (died2011), Canadian-born cell biologist, awardedNobel Prize in Physiology or Medicine (2011).
• April 26 –Christiane Floyd, Austrian-born computer scientist.
• May 9 –Colin Pillinger (died2014), Englishastrophysicist.
• May 14 –Richard Peto, Englishepidemiologist.
• June 6 –Richard Smalley (died2005), American organic chemist, recipient ofNobel Prize in Chemistry (1996) for discovery ofbuckminsterfullerene.
• June 16 –Nancy Doe Hopkins, American molecular biologist and advocate for women in science.
• June 22 –J. Michael Kosterlitz, Scottish-born condensed matter physicist, winner of theNobel Prize in Physics (2016).
• June 23 –Vint Cerf, American Internet pioneer.
• July 11 –Hilary Kahn (died2007),South African-born English computer scientist.
• August 3 –Masato Sagawa, Japanese inventor.
• August 10 –Louis E. Brus, American chemist, recipient of Nobel Prize in Chemistry (2023).
• August 29 –Arthur B. McDonald, Canadian astrophysicist, recipient of Nobel Prize in Physics (2015).
• September 20 –Richard McGehee, American mathematician working oncelestial mechanics.
• December 7 –Nick Katz, American mathematician.
• Mary Lake Polan, Americanobstetrician andgynecologist.
• Steen Willadsen,Danish-bornembryologist.

• January 5 –George Washington Carver (born c.1864),African American agriculturalbotanist.
• January 7 –Nikola Tesla (born1856),Serbian Americaninventor.
• January 24 –Carl Brigham (born1890), American pioneer ofpsychometrics.
• January 26 –Nikolai Vavilov (born1887), Russianplant pathologist (in prison).
• February 14 –David Hilbert (born1862), Germanmathematician.
• February 20 –Ernest Guglielminetti (born1862),Swissphysician^[17]
• February 23 –Abraham Buschke (born1868),German Jewishdermatologist (inTheresienstadt concentration camp).
• March 2 –Gisela Januszewska (born1867), Austrian public healthphysician (in Theresienstadt concentration camp).^[18]
• March 28 –Robert W. Paul (born1869), English pioneer of cinematography.
• April 8 –Kiyotsugu Hirayama (born1874), Japaneseastronomer.
• June 26 –Karl Landsteiner (born1868), Austrian-born American Jewishphysiologist.
• July 5 –Charles Gandy (born1872), Frenchphysician.
• July 7 –Hugh Whistler (born1889), Englishornithologist of India.
• September 23 –John Bradfield (born 1867), Australiancivil engineer.
• September 30 –Carl Edvard Johansson (born1864),Swedishmetrologist.
• October 1 –Albert Stewart Meek (born1871), English-born Australianornithologist.
• November 14 –Frank Leverett (born1859), Americanglaciologist.
• November 20 –Bertha Lamme Feicht (born1869), American electrical engineer.

• 1943 in science
• 20th century in science
• 1940s in science

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