Search results
Results from the WOW.Com Content Network
1929: Alexander Fleming: Penicillin, the first beta-lactam antibiotic; 1929: Lars Onsager's reciprocal relations, a potential fourth law of thermodynamics; 1930: Subrahmanyan Chandrasekhar discovers his eponymous limit of the maximum mass of a white dwarf star; 1931: Kurt Gödel: incompleteness theorems prove formal axiomatic systems are incomplete
1928 – Alexander Fleming notices that a certain mould could stop the duplication of bacteria, leading to the first antibiotic: penicillin. 1933 – Hybrid corn is commercialized. 1942 – Penicillin is mass-produced in microbes for the first time. 1950 – The first synthetic antibiotic is created.
Sir Alexander Fleming FRS FRSE FRCS [2] (6 August 1881 – 11 March 1955) was a Scottish physician and microbiologist, best known for discovering the world's first broadly effective antibiotic substance, which he named penicillin.
Electrocardiography: Alexander Muirhead (1869) [143] [144] Discovery of Staphylococcus: Sir Alexander Ogston (1880) [145] Discovering insulin: John Macleod (1876–1935) with others [10] The discovery led him to be awarded the 1923 Nobel prize in Medicine. [146] Penicillin: Sir Alexander Fleming (1881–1955) [9]
1928 – Alexander Fleming discovered the first antibiotic, penicillin; 1929 – Phoebus Levene discovered the sugar deoxyribose in nucleic acids. 1929 – Edward Doisy and Adolf Butenandt independently discovered estrone. 1930 – John Howard Northrop showed that the pepsin enzyme is a protein. 1931 – Adolf Butenandt discovered androsterone.
The timeline of historic inventions is a chronological list of particularly important or ... 21 – 3.7 kya: Star chart in France, [71] [72 ... The Fleming valve, the ...
Get AOL Mail for FREE! Manage your email like never before with travel, photo & document views. Personalize your inbox with themes & tabs. You've Got Mail!
Sample of penicillin mould presented by Alexander Fleming to Douglas Macleod in 1935. The discovery of penicillin was one of the most important scientific discoveries in the history of medicine. Ancient societies used moulds to treat infections and in the following centuries many people observed the inhibition of bacterial growth by moulds.