Anders Jonas Ångström
Physicist and astronomer, spectroscopy pioneer

Born
August 13th, 1814
210 years ago
Died
June 21st, 1874
150 years ago — 59 years old
Category
Scientists & Innovators
Country
Sweden
Links & References
Born in 1814, a physicist and astronomer contributed significantly to the understanding of light and spectroscopy. Ångström developed a method for measuring the wavelengths of spectral lines. He created the spectral classification system and was the first to accurately measure ultraviolet and infrared light. His work laid the foundation for modern spectroscopy, facilitating advancements in various scientific fields.
Pioneered spectroscopy techniques
Developed the Ångström unit for measuring wavelengths
Published 'On the Spectra of the Elements'
Other People Born on August 13th
Adam Housley
Played as a pitcher in Major League Baseball for the Toronto Blue Jays and San Francisco Giants. Transitioned to journalism, working for various networks including Fox News. Covered significant events and developed a reputation in broadcast journalism.
Continue ReadingHissène Habré
Served as the president of Chad from 1982 to 1990. Led a government notable for its authoritarian style and involvement in various conflicts within the region. Accused of numerous human rights violations and crimes against humanity during his presidency. After being overthrown, fled to Senegal, where he lived in exile for years. In 2016, a special African Union tribunal found him guilty of war crimes, sentencing him to life in prison.
Continue ReadingDave Days
Gained popularity through YouTube with original songs and covers. Released singles such as 'Jessica Is Alive' and 'When I Grow Up'. Collaborated with other YouTube personalities and musicians, contributing to a blend of social media influence and music. Developed a significant online presence, enabling a transition to live performances and a dedicated fanbase. Engaged in various musical projects and maintained a career in the music industry.
Continue ReadingBert Lahr
An American actor renowned for his work in theatre and film, particularly noted for portraying the Cowardly Lion in the classic 1939 movie 'The Wizard of Oz.' Lahr's career began on stage, where he gained prominence as a vaudeville performer and comedian. His ability to blend humor with authentic emotion earned him a loyal following. Throughout the 1940s and 1950s, he appeared in several Broadway productions, showcasing his talent in musical theatre. Lahr also featured in various films and made television appearances, contributing to his recognition in the entertainment industry.
Continue ReadingGoldwin Smith
Born in England, a prominent historian and journalist contributed significantly to Canadian intellectual life. In the 19th century, expressed strong views on nationalism and the nature of Canadian governance. Served as a professor of modern history at the University of Toronto, where teachings influenced many students. Actively engaged in journalism, writing articles for various publications that discussed historical and political issues. Advocated for Canadian confederation, emphasizing the importance of national identity. Authored several works on history and contemporary politics, contributing to public discourse on these subjects.
Continue ReadingMoses Mbye
Born in Australia, this rugby league player primarily competed as a fullback and five-eighth. He began his professional career with the Canterbury Bulldogs, making his debut in 2014. Over the years, he transitioned to play for the Wests Tigers and has represented New South Wales in State of Origin matches. He gained recognition for his speed and agility on the field, contributing significantly to his teams’ performances in various competitions.
Continue ReadingOther People Who Died on June 21st
Smedley Butler
A distinguished United States Marine Corps general, recognized for bravery and leadership during the early 20th century. Served in various military engagements including the Philippine-American War, World War I, and the Banana Wars. Awarded the Medal of Honor twice for valor in combat, specifically during the battles of Vera Cruz and the Haitian Campaign. After retiring, became vocal about anti-war sentiments and criticized U.S. military intervention abroad, writing extensively on military-related issues.
Continue ReadingÉtienne Aignan
Born in France in 1773, this individual was an influential author and academic who contributed to the literary scene in the 19th century. Primarily involved in the promotion and study of French literature, he engaged in academic pursuits that helped shape cultural discussions of the time. His works reflected a deep understanding of literary movements and influenced both contemporaries and future scholars.
Continue ReadingJames P. Gordon
Born in 1928, this American physicist and engineer contributed significantly to the field of laser technology. He received a Bachelor of Science in Electrical Engineering from the City College of New York and went on to earn a Ph.D. from the Massachusetts Institute of Technology. His research in laser dynamics led to the development of important laser systems. He served as a professor at the University of Maryland, advancing education in applied physics and electrical engineering while mentoring numerous students throughout his career. His work laid the groundwork for various laser applications across different industries, further establishing the relevance of lasers in modern technology.
Continue ReadingVille Kiviniemi
Became a prominent political figure in Finland during the early 20th century. Served as the mayor of Oulu, influencing local governance and development. Actively participated in Finnish politics during a crucial time in the nation's history, contributing to the shaping of policies and political structures. Engaged in community building and public service, reflecting the challenges faced by Finnish society during the period.
Continue ReadingAbid Hussain
An Indian economist and diplomat served as Indian Ambassador to the United States from 1998 to 2001. Earlier in his career, held positions such as Secretary in the Ministry of Commerce and Director General of the Indian Council for Research on International Economic Relations. Contributed significantly to economic policy discussions and institutional development in India. Advocated for economic reforms and engaged in various discussions on trade and investment.
Continue ReadingCharles Townshend
A prominent English politician during the 18th century, held the position of Chancellor of the Exchequer. Played a critical role in implementing the Townshend Acts, a series of measures introduced in 1767 that taxed goods imported to the American colonies. Advocated for greater control over colonial trade and governance, which intensified tensions leading up to the American Revolution. Served as a member of Parliament, influencing financial and political strategies of the time.
Continue Reading