John Dalton FRS (/ ˈdɔːltən /; 5 or 6 September 1766 – 27 July 1844) was an English chemist, physicist, and meteorologist whose work laid the foundations of modern atomic theory and stoichiometric …

Jan 20, 2026 · John Dalton, English meteorologist and chemist, a pioneer in the development of modern atomic theory. His theory was notable for, among other things, positing that each element had its …

Although a schoolteacher, a meteorologist, and an expert on color blindness, John Dalton is best known for his pioneering theory of atomism. He also developed methods to calculate atomic weights and …

Dalton is best known for his formulation of the atomic theory, which clarified our understanding of how atoms combine to form compounds, and how atoms may form new combinations during chemical …

Jan 20, 2026 · By far Dalton’s most influential work in chemistry was his atomic theory. Attempts to trace precisely how Dalton developed this theory have proved futile; even Dalton’s own recollections on …

10 hours ago · Dalton, who previously led the Allegheny County Department of Human Services in Pittsburgh, will start in her role as commissioner on Monday.

Nov 10, 2025 · The Dalton, symbolized as Da, is a specialized unit of mass used across chemistry and biology to quantify the microscopic components that make up matter.

1 day ago · NEW YORK – New York City Mayor Zohran Kwame Mamdani announced his appointment of Erin Dalton as commissioner of New York City Department of Social Services (DSS). “New …

5 hours ago · The Panthers have fielded calls about Dalton and could create $2.2 million in salary-cap space by trading the 38-year-old quarterback.

Jun 9, 2025 · You may take it for granted that matter is made up of atoms, but what we consider common knowledge was unknown until relatively recently in human history. Most science historians …