Erik Verlinde
Theoretical physicist with string theory work
A theoretical physicist specialized in string theory and gravity. Contributions to the study of black holes and the entropic nature of gravity led to significant developments in theoretical physics. Authored important papers and proposed new models that challenged existing paradigms of gravitational theories. Known for developing the ideas around emergent gravity, which has influenced contemporary discussions in the field.
Developed emergent gravity theory
Contributed to string theory and quantum gravity
Published influential papers on black holes
Other People Born on January 21st
Andreas Bauer
German ski jumper Olympic competitor
Born
January 21st, 1964 62 years ago
Competed in ski jumping during the 1980s and 1990s. Participated in the 1984 Winter Olympics in Sarajevo, representing Germany. Achieved notable success in various international competitions, contributing to the prominence of German ski jumping.
Continue ReadingJoseph Nicolosi
Clinical psychologist specializing in therapy
Born
January 21st, 1947 79 years ago
Died
2017 9 years ago — 70 years old
A clinical psychologist, contributed to the field of psychology through the development of reparative therapy, aimed at changing sexual orientation. Founded the Thomas Aquinas Psychological Clinic in California, which became a training center for therapists practicing this approach. Authored several books, including 'Healing Homosexuality' and 'A Parent's Guide to Preventing Homosexuality'. Engaged in public discourse on the subject of sexual orientation and therapy, frequently appearing in media to discuss controversial topics related to homosexuality and psychotherapy.
Continue ReadingPitirim Sorokin
Sociologist and political activist
Born
January 21st, 1889 137 years ago
Died
1968 58 years ago — 79 years old
Born in 1889, this individual became a prominent sociologist and political activist in the United States. Emigrating from Russia, he contributed significantly to the field of sociology with a focus on social change and cultural dynamics. This individual founded the Harvard University Sociology Department and authored numerous influential works, exploring the interplay between culture, social structure, and human behavior. Additionally, this individual engaged in political activism, advocating for social reforms and addressing issues of war and peace. The body of work shaped sociological thought and practice, particularly in the mid-20th century.
Continue ReadingKarl Julius Beloch
German classical historian and economist
Born
January 21st, 1854 172 years ago
Died
1929 97 years ago — 75 years old
Contributed significantly to the understanding of classical antiquity and the economy of ancient Rome. Conducted extensive research and published numerous works that focused on the social and economic aspects of Greek and Roman history. His analytical approach provided a framework for integrating historical narrative with economic theory. Elevated the study of demographics in ancient societies, emphasizing quantitative analysis. Worked as a professor and influential in shaping academic discourse within the field of history.
Continue ReadingSteven Marshall
Australian politician, 46th Premier of SA
Born
January 21st, 1968 58 years ago
Served as the 46th Premier of South Australia from 2018 to 2022. Held the position of Leader of the Liberal Party of South Australia since 2013. Represented the electorate of Dunstan in the South Australian House of Assembly. Focused on economic reform, infrastructure projects, and improving public services during the tenure as Premier.
Continue ReadingPiotr Ugrumov
Russian professional road cyclist
Born
January 21st, 1961 65 years ago
A professional road cyclist from Russia, Ugrumov competed primarily during the 1990s. He participated in several Grand Tours, including the Tour de France, Giro d'Italia, and Vuelta a España. Ugrumov achieved considerable success in stage races, particularly in the Tour de France where he won stages and earned recognition for his climbing abilities. His career highlights include the prestigious overall victory in the 1991 Tour de l'Avenir, a race vital for emerging talents in cycling. Ugrumov's contributions to the sport shaped the competitive landscape for Russian cyclists in the international arena.
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