Gregor Mendel: 20th July

Gregor Mendel (Born 1822) was an Austrian-Czech biologist, meteorologist, mathematician, Augustinian friar and abbot of St. Thomas' Abbey in Brno, Moravia. He was the first person to lay the mathematical foundation of the science of genetics, in what came to be called Mendelism.

Brian May: 19th July

Brian May (born 1947) as a rock guitarist, composer and practicing astronomer.

Robert Hooke: 18th July

 Robert Hooke FRS (born1635 – )[4][a] was an English polymath; physicist, astronomer, geologist, meteorologist and architect.

Eunice Newton Foote: 17th July

 Eunice Newton Foote (Born 1819) was an American scientist, inventor, and women's rights campaigner. 

Irmgard Flügge-Lotz: 16th July

Irmgard Flügge-Lotz (born 1903-1974) was German born and internationally renowned for her many important contributions to aerodynamics and to automatic control theory.

Jocelyn Bell Burnell: 15th July

 Jocelyn Bell Burnell (born 1943)  is an astrophysicist from Northern Ireland who, as a postgraduate student, discovered the first radio pulsars in 1967. 

Javier Solana: 14th July

 Javier Solana (born 1942) is a Spanish physicist and Partido Socialista Obrero Español (PSOE) politician.

Ernő Rubik: 13th July

Ernő Rubik (born 1944) is a Hungarian inventor, widely known for creating the Rubik's Cube

Buckminster Fuller: 12th July

 Richard Buckminster Fuller (born 1895) was an American architect, systems theorist, writer, designer, inventor, philosopher, and futurist. He coined or popularised such terms as "Spaceship Earth", "Dymaxion" (e.g., Dymaxion house, Dymaxion car, Dymaxion map), "ephemeralization", "synergetics", and "tensegrity".

Julia King: 11th July

Julia King (born in 1954) is a British engineer and a crossbench member of the House of Lords, where she chairs the Select Committee on Science and Technology

Nikola Tesla: 10th July

Nikola Tesla (born 1856) was a Serbian electrical engineer who has been honoured by having an electrical SI unit of measurement of  magnetic flux density named after him.

Siân Berry: 9th July

 Siân Berry (born 1974) is the Green Party MP for Brighton Pavillion.

Ferdinand von Zeppelin: 8th July

 Count Ferdinand von Zeppelin (German: Ferdinand Adolf Heinrich August Graf von Zeppelin;born in  1838 ) was a German general and later inventor of the Zeppelin rigid airships.

Joseph Jacquard: 7th July

Joseph Marie Charles  (born 1752) nicknamed Jacquard was a French weaver and merchant. He played an important role in the development of the earliest programmable loom (the "Jacquard loom"), which in turn played an important role in the development of other programmable machines.

The patented 'Jacquard loom' was 'nationalised' and promoted by the French government and put thousands of 'draw boys', who manipulated the warp to create patterns in silk, out of work. In the first two decades of the 18th century, over 11,000 looms were sold in France, changing the relationship of weavers with their means of production.

The portrait of Jacquard by Michel-Marie Carquillat was created with 24,000 punched cards

Punched cards were proposed by Babbage for his 'Calculating Engine', used to record harmonium tunes, employed by Herman Hollerith for the 1890 US census and standardised by IBM in the early 20th Century.

Jacquard died 1834

Source of image and text from the Linda Hall Library

Ioana Dumitriu: 6th July

 Ioana Dumitriu (born in 1976) is a Romanian-American mathematician who works as a professor of mathematics at the University of California, San Diego. Her research interests include the theory of random matrices, numerical analysis, scientific computing, and game theory. 

Caryn Navy: 5th July

Caryn Linda Navy (born in 1953) is an American mathematician and computer scientist. Blind since childhood, she is chiefly known for her work in set-theoretic topology and Braille technology.

George Everest: 4th July

George Everest (1790 - 1866) was a welsh military engineer and geodesist who worked on the trigonometrical survey of India (1818-43), providing the accurate mapping of the subcontinent.

Pierre Berthier: 3rd July

 Pierre Berthier ( 1782 - 1861) was a French mineralogist and mining engineer who discovered bauxite (aluminium ore) in 1821 near the village Les Baux de Provence

Elizabeth Anionwu: 2nd July

 Dame Elizabeth Nneka Anionwu OM DBE FRCN (born Elizabeth Mary Furlong in 1947) is a British nurse, health care administrator, lecturer, and Emeritus Professor of Nursing at the University of West London.