Joseph Petzval
Mathematician known for lens theory
Mathematician known for lens theory
1891
135 years ago — 84 years old
Scientists & Innovators
Hungary
A mathematician and physicist, contributed significantly to the field of optics and the development of photographic lenses. Proposed the Petzval lens design in 1840, which greatly enhanced image quality in photography. Worked on the mathematics related to optical systems and made advancements in the understanding of image formation. His work laid foundational principles for modern photography and lens manufacturing.
Developed the Petzval lens design
Contributed to the mathematics of optics
An actress and singer, this individual gained prominence through a leading role in the television series One Day at a Time, which aired from 1975 to 1984. The character portrayed represented a single mother navigating life with her two daughters, contributing to discussions surrounding familial and societal issues. In addition to television work, major appearances included roles in theater productions and guest appearances in several television shows. With a career spanning several decades, this person also received recognition for stage performances, particularly in the musical Brighton Beach Memoirs.
Continue ReadingA prominent American lawyer and politician, this individual played a key role in the abolitionist movement and served as a U.S. Senator from Massachusetts. Advocacy for civil rights and opposition to the expansion of slavery defined a substantial part of his career. This politician delivered powerful speeches, including the famous 'The Barbarism of Slavery' address, which highlighted the moral issues surrounding slavery. His strong stance against the Kansas-Nebraska Act and his involvement in the Free Soil Party contributed to the growing tensions leading up to the Civil War. This individual was also notable for being a victim of a brutal assault by a fellow congressman on the Senate floor due to his anti-slavery views.
Continue ReadingAn English actor, producer, and screenwriter primarily recognized for comedic performances in television and film. Gained widespread popularity with the television series 'Mr. Bean', which showcased a largely silent character and slapstick humor. Also starred in the sitcom 'Blackadder', which featured historical parodies across different eras. Worked on films such as 'Johnny English', portraying a hapless secret agent. Established a distinctive style characterized by physical comedy and minimal dialogue.
Continue ReadingBorn in 1964, this individual served as a member of the Finnish Parliament from 2003 to 2011. He was involved in various legislative efforts, particularly focused on information technology and communications. Additionally, he held significant roles within the Finnish Green League, contributing to environmental and digital policy discussions. His career included work as a journalist, where he reported on technology and political issues, and he maintained active participation in national debates concerning digital rights and education.
Continue ReadingA Spanish footballer played as a midfielder. Developed through the youth ranks of FC Barcelona, made first-team appearances in La Liga. Contributed to the team's success in domestic and international competitions. Later transferred to clubs including Villarreal and Celta de Vigo, where continued to showcase skills in Spain's top leagues.
Continue ReadingGuitarist and songwriter contributed significantly to the success of the Australian rock band AC/DC. Co-founded the band in 1973 with his brother and became a vital part of its identity through songwriting and performances. Celebrated for his innovative guitar riffs and rhythm playing, which defined the band's sound. Instrumental in producing landmark albums such as 'Highway to Hell' and 'Back in Black', which became definitive rock classics. Continued to perform with the band until his retirement due to health issues, leaving behind a legacy within the music industry.
Continue Reading