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Science on the 20th of July in history

Science

Date	Type	Text
20 Jul 1627 Guðbrandur Þorláksson	science	death Guðbrandur Þorláksson Guðbrandur Þorláksson, Icelandic mathematician and cartographer (born 1541)	0
20 Jul 1741 Georg Wilhelm Steller	science	Georg Wilhelm Steller (zoology) Georg Wilhelm Steller, physician on Bering’s Second Kamchatka Expedition, becomes the first European naturalist to set foot on Alaskan soil (Kayak Island), identifying many species for the first time, including Steller's Jay. On the return voyage he discovers Steller's Sea Cow (extinct by 1768).	0
20 Jul 1793 Scottish	science	Scottish (exploration) 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.	0
20 Jul 1804 Richard Owen	science	birth Richard Owen Richard Owen, anatomist and paleontologist (died 1892)	0
20 Jul 1807 French	science	French (technology) French brothers Claude and Nicéphore Niépce receive a patent for their Pyréolophore, an early internal combustion engine, having demonstrated it powering a boat on the Saône.	0
20 Jul 1816 Sir William Bowman, 1st Baronet	science	birth Sir William Bowman, 1st Baronet Sir William Bowman, 1st Baronet, English ophthalmologist, histologist and anatomist (died 1892)	0
20 Jul 1836 Thomas Clifford Allbutt	science	birth Thomas Clifford Allbutt Thomas Clifford Allbutt (died 1925), physician.	0
20 Jul 1851 Arnold Pick	science	birth Arnold Pick Arnold Pick (died 1924), neurologist.	0
20 Jul 1866 Bernhard Riemann	science	death Bernhard Riemann Bernhard Riemann (born 1826), mathematician.	0
20 Jul 1884 Caesar Hawkins	science	death Caesar Hawkins Sir Caesar Hawkins (born 1798), English surgeon.	0
20 Jul 1897 Tadeus Reichstein	science	birth Tadeus Reichstein Tadeus Reichstein (died 1996), Nobel Prize-winning chemist.	0
20 Jul 1937 Guglielmo Marconi	science	death Guglielmo Marconi Guglielmo Marconi (born 1874), Italian inventor.	0
20 Jul 1976 Viking program	science	Viking program (astronomy and space ) Viking program: The Viking 1 lander successfully lands on Mars.	0
20 Jul 1982 Allen Hill	science	Allen Hill (medicine) Allen Hill and colleagues at the University of Oxford develop a glucose biosensor.	0
20 Jul 1985 Bruno de Finetti	science	death Bruno de Finetti Bruno de Finetti (b. 1906), Italian statistician.	0

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