Abū al-Wafā' Būzjānī
Persian mathematician and astronomer
Born
None
None years ago
Died
Category
Scientists & Innovators
Country
Iran
Links & References
A Persian mathematician and astronomer contributed significantly to the fields of mathematics and astronomy during the medieval period. Developed advancements in trigonometry, particularly in terms of sine and tangent functions. Implemented the use of sexagesimal fractions, which improved accuracy in calculations. Created accurate astronomical tables and synthesized earlier scientific knowledge, particularly the works of Greek astronomers. His efforts in improving the accuracy of astronomical instruments facilitated advancements in celestial navigation.
Authored the book 'Kitab al-Esti'a'adah'
Developed trigonometric functions using sexagesimal fractions
Created astronomical tables for celestial calculations
Other People Who Died on July 15th
René of Châlon
Prince of Orange
Born
February 5th, 1519 507 years ago
Died
July 15th, 1544 482 years ago — 25 years old
Born in 1519, served as Prince of Orange and a prominent leader in the early development of the Dutch Republic. Received the title of Count of Orange while managing the complex political landscape of the time. Actively involved in military campaigns against the French and was a key figure during the era of the Reformation. Engaged in various diplomatic efforts to strengthen Protestant alliances. Died in battle in 1544 at the Siege of Saint-Dizier.
Continue ReadingMarie-Victorin Kirouac
Canadian botanist and academic
Born
April 3rd, 1885 141 years ago
Died
July 15th, 1944 82 years ago — 59 years old
Born in 1885, this botanist contributed significantly to the field of botany in Canada. The individual founded the Botanical Garden of Montreal, which became a vital center for plant research and education. As an academic, engaged in teaching and research, enhancing the understanding of local flora. The work involved encoding extensive plant collections and fostering conservation efforts within the province.
Continue ReadingEugen Bleuler
Swiss psychiatrist, inventor of term 'schizophrenia'
Born
April 30th, 1857 169 years ago
Died
July 15th, 1940 86 years ago — 83 years old
A Swiss psychiatrist contributed significantly to the understanding of mental illness. Coined the term 'schizophrenia' to describe a spectrum of psychotic disorders. Introduced the concept of 'autism' in relation to schizophrenia, emphasizing the withdrawal from reality. Served as the director of the Psychiatric Clinic at the University of Zurich. Advocated for humane treatment of patients, moving away from institutionalization. Entered the debate on eugenics, influencing thoughts on mental health and heredity.
Continue ReadingWan Li
Chinese politician and educator, Vice Premier
Born
December 1st, 1916 109 years ago
Died
July 15th, 2015 11 years ago — 98 years old
Served as Vice Premier of the People's Republic of China from 1986 to 1988. Played a pivotal role in educational reform and modernization during the late 20th century. Focused on improving higher education and promoting research and development. Involved in various governmental initiatives aimed at economic reform and growth.
Continue ReadingMichael Bruce
Scottish poet and composer of songs
Born
March 27th, 1746 280 years ago
Died
July 15th, 1767 259 years ago — 21 years old
Born in 1746, this individual was a prominent Scottish poet and composer. Associated with the Scottish literary revival, contributed significantly to the canon of Scottish poetry through works that encapsulated the themes of nature and Scottish identity. The poetry written during his lifetime expressed deep emotional resonance and is celebrated for its lyrical quality. His compositions also included hymns and songs, which further showcased his musical talent. The influence of the Scottish Enlightenment can be seen in the themes and styles adopted in his poetry. His life was cut short at the age of 29, but his legacy continues in the world of Scottish literature and music.
Continue ReadingFrancis Cherry
Governor of Arkansas
Born
1908 118 years ago
Died
July 15th, 1965 61 years ago — 57 years old
Served as the 35th Governor of Arkansas from 1955 to 1967. Implemented several initiatives addressing educational reforms and infrastructure improvements in the state. Pursued legal and political careers after graduation from law school. Contributed to the establishment of various policies aimed at enhancing the welfare of Arkansans.
Continue Reading