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Hace 3 días · 1928: Penicillin is first observed to exude antibiotic substances by Nobel laureate Alexander Fleming. Development of medicinal penicillin is attributed to a team of medics and scientists including Howard Walter Florey , Ernst Chain and Norman Heatley .
Hace 5 días · August 31 – Anthropologist Margaret Mead lands in American Samoa to begin nine months of field work that will culminate in her 1928 book Coming of Age in Samoa. The bestselling book will become the first popular anthropological study and will change many attitudes towards tribal peoples.
Hace 6 días · Model 1928 A deactivated M1928 Thompson submachine gun at Alcatraz, San Francisco Bay. The Model 1928 was the first type widely used by military forces, with the U.S. Navy and U.S. Marine Corps as major buyers through the 1930s.
- 10.52 in (267 mm), 12 in (300 mm) (with Cutts compensator)
- United States
- 164 yds (150 m)
- 900rpm (M1921), 700–800rpm (M1928), 600-700rpm (M1A1)
Hace 4 días · Thompson submachine gun, submachine gun patented in 1920 by its American designer, John T. Thompson. It weighed almost 10 pounds (4.5 kg) empty and fired .45-calibre ammunition. The magazine was either a circular drum that held 50 or 100 rounds or a box that held 20 or 30 rounds.
16 de abr. de 2024 · George V, king of the United Kingdom from 1910 to 1936, the second son of Prince Albert Edward, later King Edward VII. Created duke of Cornwall and prince of Wales after his father’s accession (1901), he succeeded his father on May 6, 1910, and was crowned on June 22, 1911.
4 de may. de 2024 · Hace 90 años, Diego Rivera concluyó en el edificio sede de la Secretaría de Educación Pública una serie de murales que, en su conjunto, se conocen como “ Corrido de la revolución proletaria ”, entre ellos destaca “ En el arsenal ”.
18 de abr. de 2024 · Amsterdam 1928 Olympic Games, athletic festival held in Amsterdam, that took place May 17–August 12, 1928. The Amsterdam Games were the eighth occurrence of the modern Olympic Games. Track-and-field and gymnastics events were added to the women’s slate at the 1928 Olympics.
