1793 in science

The year 1793 in science and technology involved some significant events.

Events

July 20 – Scottish explorer Alexander Mackenzie's 1792–1793 Peace River expedition to the Pacific Ocean reaches its goal at Bella Coola, British Columbia, making him the first known person to complete a transcontinental crossing of northern North America.

Scottish chemist Thomas Charles Hope confirms the existence of the alkaline earth metal which he names strontites; later isolated as strontium.

Matthew Baillie publishes The Morbid Anatomy of Some of the Most Important Parts of the Human Body, considered the first systematic study of pathology and the first publication in English on it as a separate subject. He is credited with first identifying transposition of the great vessels and situs inversus.
John Bell begins publication in Edinburgh of The Anatomy of the Bones, Muscles & Joints and Discourses on the Nature and Cure of Wounds with illustrations by himself and his brother Charles.
Yellow Fever epidemic in Philadelphia in the United States.
Dominique Jean Larrey, chief surgeon of the French Revolutionary Army, creates the first battlefield "flying ambulance" service.

The grave, the original name for the kilogram, is defined by the Commission of Weights and Measures of the French Academy of Sciences.

May 15 – Spanish inventor Diego Marín Aguilera flies a glider for about 360 m.
October 28 – Eli Whitney applies for a United States patent for his cotton gin.
Hannah Slater applies for a United States patent for her new method of producing sewing thread from cotton.

April 21 – John Michell, English geologist
May 20 – Charles Bonnet, Genevan naturalist
May 26 – Eliza Lucas, American agronomist
May 28 – Anton Friedrich Büsching, German geographer
June 26 – Gilbert White, English naturalist August 21 – James Small, Scottish inventor
September 26 – Jean Baptiste François Pierre Bulliard, French mycologist
October 16 – John Hunter, Scottish surgeon, pathologist and comparative anatomist