John Venn
Mathematician and philosopher, Venn diagram

Born
August 4th, 1834
191 years ago
Died
April 4th, 1923
102 years ago — 88 years old
Category
Thinkers & Philosophers
Country
United Kingdom
Links & References
Contributed significantly to the field of mathematics and philosophy. Developed the Venn diagram, which visually represents logical relations between sets. Authored several works on symbolic logic and probability theory, enhancing the understanding of these subjects. Participated actively in philosophical discussions of his time, focusing on logic and its applications in mathematics.
Developed the Venn diagram
Published 'The Principles of Empirical Logic'
Other People Born on August 4th
Dame Laura Knight
Born in 1877, an English artist gained recognition for her paintings depicting the lives of performers, including those in the circus and ballet. Knight created notable war art during World War II, reflecting the experiences of soldiers and the home front. A member of the Royal Academy, she became the first woman to be elected as a full member in 1936. Her works often captured themes of women at work, particularly in the arts. Knight exhibited widely, and her contributions to British art have been significant.
Continue ReadingSiri Nordby
Born in Norway, this footballer played as a midfielder and made significant contributions to women's football in the country. She represented Norway at various international competitions, including the UEFA Women's Euro and the FIFA Women's World Cup. Her club career included successful spells at top teams in Norway, where she showcased her skills and leadership on the pitch.
Continue ReadingBill Hallahan
A professional baseball pitcher played in Major League Baseball from 1926 to 1947. Primarily pitched for the St. Louis Cardinals, contributing significantly to the team's success. Achieved notable recognition for performances during the 1934 season, culminating in a World Series championship. Also played for the New York Giants and the Chicago Cubs throughout his career. Hallahan earned a solid reputation as an effective left-handed pitcher, appearing in several games as a starter and reliever.
Continue ReadingTerry Campese
Played as a halfback or five-eighth in rugby league. Spent the majority of professional career with the Canberra Raiders in the National Rugby League (NRL). Represented Australia in international matches and was part of the Kangaroos squad. Achieved the title of NRL Player of the Year in 2009. Suffered multiple injuries throughout career, impacting playing time and performance.
Continue ReadingBrian Voss
Competed at a high level in ten-pin bowling and achieved significant success in professional tournaments. Accumulated numerous titles throughout a career spanning several decades. Became a member of the Professional Bowlers Association (PBA) and achieved a notable presence in the sport, contributing to its popularity and visibility.
Continue ReadingClarke Reed
A businessman and politician from the United States. Served as the chairman of the Mississippi Republican Party and played a significant role in the party's development in the state. Elected as a delegate to the Republican National Conventions in the 1960s and 1970s, contributing to the party's platforms. Helped in establishing key local and state policies during tenure as a politician. Also engaged in various business ventures throughout career.
Continue ReadingOther People Who Died on April 4th
André Michelin
Co-founded the Michelin Tyre Company, which became a leading manufacturer of tires. Under his leadership, Michelin introduced the first detachable tire, revolutionizing the automobile industry. Extended the business's reach with the strategic introduction of guides that promoted travel and hospitality, contributing to the growth of road tourism in France. Pioneered efforts in tire technology and safety, establishing Michelin as a prominent name in the automotive world.
Continue ReadingElmer Lach
An ice hockey player and coach, contributed significantly to the sport. Played for the Montreal Canadiens in the National Hockey League (NHL) from 1940 to 1954. Acted as a center and was part of the legendary Punch Line with Maurice Richard and Toe Blake. Led the Canadiens to three Stanley Cup championships in 1944, 1946, and 1953. After retiring as a player, served as a coach for various teams, including the junior team in Montreal. Elected to the Hockey Hall of Fame in 1966.
Continue ReadingJamaluddin Jarjis
A prominent engineer and politician in Malaysia, contributed significantly to the development of the nation’s telecommunications infrastructure. Served as the Minister of Science, Technology and Innovation and played a key role in shaping policies related to technology and innovation. Held various positions within the government, including Member of Parliament. Involved in numerous initiatives to promote science and technology education in Malaysia. His engineering background helped bridge the gap between technology and governmental policy.
Continue ReadingGeorge Albert Smith
Served as the 8th president of The Church of Jesus Christ of Latter-day Saints from 1945 until death in 1951. Initiated several welfare and missionary programs within the church. Advocated for the church's growth and expansion during the post-World War II era. Played a significant role in church governance and development, influencing numerous members and communities.
Continue ReadingWilliam Crookes
Contributed significantly to the study of atomic structure and radiation. Conducted experiments in spectroscopy and developed new vacuum tubes that led to advancements in electronics. Demonstrated the existence of thallium in 1861 using spectroscopy. Worked on the properties of cathode rays, leading to the development of the Crookes tube, which was pivotal in the field of electron research. Later, investigated the properties of radioactivity and was involved in the study of psychic phenomena.
Continue ReadingHeinrich Wilhelm Dove
Contributions included pioneering work in the areas of electricity, magnetism, and meteorology. Developed the concept of atmospheric electricity and contributed to the understanding of electromagnetic waves. Published significant research on the relation of weather patterns to solar activity. Played a crucial role in the establishment of meteorological observation and forecasting.
Continue Reading