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| ||1684 – Edme Mariotte, French physicist and priest (b. 1620)
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| ||Charles Mason (April 1728 [baptised 1 May]) was an English astronomer who made significant contributions to 18th-century science and American history, particularly through his involvement with the survey of the Mason–Dixon line
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| ||1748 – Thomas Lowndes, English astronomer and academic (b. 1692)
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| ||1803 – Justus von Liebig, German chemist and academic (d. 1873)
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| ||Alexander William Williamson (b. 1 May 1824) was an English chemist of Scottish descent. He is best known today for the Williamson ether synthesis. Pic.
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| File:Johann Jakob Balmer.jpg|link=Johann Jakob Balmer (nonfiction)|1825: Mathematician and physicist [[Johann Jakob Balmer (nonfiction)|Johann Jakob Balmer]] born. He will develop an empirical formula for the visible spectral lines of the hydrogen atom. | | File:Johann Jakob Balmer.jpg|link=Johann Jakob Balmer (nonfiction)|1825: Mathematician and physicist [[Johann Jakob Balmer (nonfiction)|Johann Jakob Balmer]] born. He will develop an empirical formula for the visible spectral lines of the hydrogen atom. |
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| ||1856 – Jacques Philippe Marie Binet, French mathematician, physicist, and astronomer (b. 1786)
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| ||John Walker (d. 1 May 1859) invented the friction match.
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| ||Gabriel Lamé (1 May 1870) was a French mathematician who contributed to the theory of partial differential equations by the use of curvilinear coordinates, and the mathematical theory of elasticity.
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| ||1878 – Anselme Payen, French chemist and academic (b. 1795)
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| ||Eduard Schönfeld (d. May 1, 1891) was a German astronomer.
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| File:Herman_Hollerith.jpg|link=Herman Hollerith (nonfiction)|1891: Inventor [[Herman Hollerith (nonfiction)|Herman Hollerith]] uses census data to predict and prevent [[crimes against mathematical constants]].
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| ||1895 – William Giauque, Canadian-American chemist and academic, Nobel Prize laureate (d. 1982)
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| ||Henry DeWolf Smyth (b. May 1, 1898) was an American physicist, diplomat, and bureaucrat. He played a number of key roles in the early development of nuclear energy, as a participant in the Manhattan Project, a member of the U.S. Atomic Energy Commission (AEC), and U.S. ambassador to the International Atomic Energy Agency (IAEA).
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| ||1910 – Dorothy Hodgkin, English biochemist, crystallographer, and academic, Nobel Prize laureate (d. 1994)
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| ||1915 – Tony Strobl, American comics artist and animator (d. 1991)
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| ||1918 – Julius Rosenberg, American spy (d. 1953)
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| ||1924 – Alexander Esenin-Volpin, Russian-American mathematician and poet (d. 2016)
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| ||1926 – The Italian-built airship Norge becomes the first vessel to fly over the North Pole.
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| ||1941 – Konrad Zuse presents the Z3, the world's first working programmable, fully automatic computer, in Berlin.
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| ||1942 – World War II: The U.S. tanker SS Virginia is torpedoed in the mouth of the Mississippi River by the German submarine U-507.
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| ||1942 – Dragoljub Velimirović, Serbian chess player and theoretician (d. 2014)
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| ||Jacob David Bekenstein (b. May 1, 1947) was a Mexico-born Israeli-American theoretical physicist who made fundamental contributions to the foundation of black hole thermodynamics and to other aspects of the connections between information and gravitation.
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| File:Gary Powers.jpg|link=Francis Gary Powers (nonfiction)|1960: Cold War: U-2 incident: [[Francis Gary Powers (nonfiction)|Francis Gary Powers]], in a Lockheed U-2 spyplane, is shot down over the Soviet Union, sparking a diplomatic crisis. | | File:Gary Powers.jpg|link=Francis Gary Powers (nonfiction)|1960: Cold War: U-2 incident: [[Francis Gary Powers (nonfiction)|Francis Gary Powers]], in a Lockheed U-2 spyplane, is shot down over the Soviet Union, sparking a diplomatic crisis. |
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| File:Asclepius Myrmidon in Advanced Test Reactor.jpg|link=Asclepius Myrmidon|1961: Scientist and combat surgeon [[Asclepius Myrmidon]] warns that U-2 incident may have released a new class of [[crimes against mathematical constants]].
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| |link=Béryl incident (nonfiction)|The [[Béryl incident (nonfiction)|Béryl incident]] was a French nuclear test, conducted on May 1, 1962, during which nine soldiers of the 621st Groupe d'Armes Spéciales unit were heavily contaminated by radioactivity.
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| |1964: First BASIC program run by John Kemeny and Thomas Kurtz at Dartmouth College.
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| ||1965 – The Soviet spacecraft Luna 5 crashes on the Moon.
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| File:Ralph Hartley.jpg|link=Ralph Hartley (nonfiction)|1970: Electronics researcher [[Ralph Hartley (nonfiction)|Ralph Hartley]] dies. He invented the Hartley oscillator and the Hartley transform, and contributed to the foundations of information theory. | | File:Ralph Hartley.jpg|link=Ralph Hartley (nonfiction)|1970: Electronics researcher [[Ralph Hartley (nonfiction)|Ralph Hartley]] dies. He invented the Hartley oscillator and the Hartley transform, and contributed to the foundations of information theory. |
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| ||2001 – Alexei Tupolev, Russian engineer, designed the Tupolev Tu-144 (b. 1925)
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| ||Solomon Wolf Golomb (d. May 1, 2016) was an American mathematician, engineer, and adacemic. He specialized in problems of combinatorial analysis, number theory, coding theory, and communications. His game of pentomino inspired Tetris. Pic.
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| ||2017 – A ransomware attack attacks over 400 thousand computers worldwide, targeting computers of the UK'S National Health Services and Telefónica computers.
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