John Ambrose Fleming
Physicist, Inventor of the Vacuum Tube
Born
November 29th, 1849
175 years ago
Died
April 18th, 1945
80 years ago — 95 years old
Category
Scientists & Innovators
Country
United Kingdom
Links & References
Contributions to electrical engineering and physics include the invention of the vacuum tube in 1904, which facilitated the development of radio technology and electronic communication. Developed the Fleming valve, crucial for early electronic amplifiers. Held a professorship at University College London and served as president of the Institution of Electrical Engineers. Engaged in various scientific organizations, contributing to advancements in telephony and radio broadcasting.
Invented the vacuum tube in 1904
Developed the Fleming valve
Other People Born on November 29th
Jon Klassen
A Canadian writer and illustrator, created notable children's books such as 'I Want My Hat Back' and 'This Is Not My Hat.' These works received acclaim for their clever storytelling and distinctive illustrations. Focused on themes of humor and irony, produced books that have gained popularity among young readers and their parents. Illustrated for various publications, contributing to a visual narrative style recognized in the children's literature landscape.
Continue ReadingMildred Gillars
Worked as a broadcaster employed by Nazi Germany during World War II. Utilized the radio to disseminate propaganda aimed at American troops and the general public. Known for producing a series of programs that blended news and entertainment with propaganda, influencing perceptions during the war.
Continue ReadingShaun Lane
Played rugby league professionally, primarily as a second-row forward. Started career with the Manly-Warringah Sea Eagles before transferring to the Parramatta Eels. Competed in the National Rugby League (NRL) and contributed to key matches heightening team profile within the league. Participated in multiple seasons showcasing skill and athleticism on the field.
Continue ReadingYacouba Sylla
A professional footballer played as a midfielder. Started career at Auxerre, making a significant contribution to the team's promotions. Transferred to clubs including Clermont Foot and SC Bastia. Played in Ligue 1 and Ligue 2, showcasing consistent performances in the midfield. Gained experience in both domestic leagues and international competitions.
Continue ReadingPeter Bergman
An American comedian, actor, and screenwriter. Significant contributions to television include roles in daytime soap operas. Best recognized for portraying Jack Abbott on "The Young and the Restless" since 1989, contributing to the series' long-running success. Also part of the comedic ensemble in the show "The Bold and the Beautiful."
Continue ReadingAndrew McCarthy
Born in 1962 in New Jersey, this individual gained prominence as an actor during the 1980s. Starred in films such as 'Pretty in Pink,' 'St. Elmo's Fire,' and 'Weekend at Bernie’s.' Transitioned to directing with projects including episodes of 'The Blacklist' and 'Orange Is the New Black.' Received recognition for contributions to television and film, expanding into writing as well.
Continue ReadingOther People Who Died on April 18th
Dionysius II
Served as the Patriarch of the Syriac Orthodox Church from 818 to 845. Oversaw ecclesiastical matters during a period of significant challenges within the church amidst political turmoil. Actively engaged in theological scholarship and church governance. His leadership contributed to the preservation of Syriac Christian traditions and practices.
Continue ReadingJohan Wilcke
A physicist and academic contributed significantly to the field of thermodynamics. Developed several innovative instruments that advanced scientific measurement and experience. Contributed to the establishment of the Royal Swedish Academy of Sciences and participated in research focused on the properties of heat and electricity.
Continue ReadingThor Heyerdahl
An ethnographer and explorer led the Kon-Tiki expedition in 1947, sailing from Peru to Polynesia on a balsa wood raft to demonstrate the feasibility of ancient maritime contact. Undertook several other expeditions, including Ra and Ra II, using papyrus boats to cross the Atlantic and Indian Oceans. Authored several books detailing these explorations, contributing to discussions on human migration and the origins of cultures. Held a PhD in anthropology, which underscored the academic basis for the adventures. Received various international awards and acclaim for his daring voyages.
Continue ReadingIsoroku Yamamoto
Born in 1884, a prominent admiral in the Imperial Japanese Navy, played a critical role in World War II. Graduated from the Imperial Japanese Naval Academy and served in various capacities. Instrumental in planning the attack on Pearl Harbor in 1941, which aimed to cripple the United States Pacific Fleet. Advocated for the use of aircraft carriers as a primary strategic asset in naval warfare. Died in 1943 when the aircraft he was traveling in was shot down by American forces.
Continue ReadingArturo Frondizi
Served as the 32nd President of Argentina from 1958 to 1962. Focused on economic development and modernization of the country. Implemented policies promoting industrialization and foreign investment. His government sought to balance growth with social justice while facing significant political opposition.
Continue ReadingÓscar Carmona
Served as the 11th President of Portugal from 1926 until 1951. During presidency, enacted policies that supported national stability and economic development. Initially rose to prominence as a military figure during the Portuguese military coup in 1926, which ultimately led to the establishment of the Estado Novo regime. Held the title of marshal in the Portuguese Army and was integral in the consolidation of power during his tenure. Played a significant role in shaping the political landscape of Portugal in the early 20th century. Passed away in 1951, leaving behind a legacy associated with authoritarian governance.
Continue Reading