Germinal Pierre Dandelin

Mathematician; Dandelin Spheres in Geometry

Germinal Pierre Dandelin - Thinkers & Philosophers born April 12th, 1794
Born
Died
Category

Thinkers & Philosophers

Country

Belgium

Links & References

Contributed significantly to mathematics and engineering, particularly in the field of geometry. Developed the Dandelin spheres, which provide a geometrical proof of the relationship between conic sections and ellipses. Engaged in research involving the properties of geometric figures and their applications in engineering. Published works that influenced the understanding of conic sections and their properties.

Developed Dandelin spheres for conic sections

Published research in geometry and engineering

Other People Born on April 12th

Antonio da Sangallo the Younger

Italian architect, designed Apostolic Palace
Born
April 12th, 1484 541 years ago
Died
August 3rd, 1546 479 years ago — 62 years old

An influential architect and military engineer, this individual played a significant role in the architectural landscape of Renaissance Italy. Active during the early 16th century, contributions included work on extensive projects in Rome. The design of the Apostolic Palace at the Vatican stands as a testament to architectural innovation during this era. Collaborations with prominent figures, including Pope Julius II and Michelangelo, shaped many foundational structures. His career was marked by a unique blend of artistry and functionality, aligning military and civil architectural needs.

Continue Reading

Pravin Gordhan

South African politician and finance minister
Born
April 12th, 1949 76 years ago
Died
September 13th, 2024 1 years ago — 75 years old

A prominent figure in South African politics, served in various capacities including Minister of Finance on multiple occasions. Played a key role in shaping the economic policies of the country post-apartheid and was instrumental in the establishment of the South African Revenue Service as a transformative institution. Oversaw the financial sector during times of economic challenge and worked to improve fiscal policies.

Continue Reading

Henry Clay

American politician and Secretary of State
Born
April 12th, 1777 248 years ago
Died
June 29th, 1852 173 years ago — 75 years old

An influential American lawyer and politician, served as the 9th United States Secretary of State from 1825 to 1829. Played a key role in the formation of the Whig Party and served multiple terms in the U.S. Senate. Participated in important legislative compromises addressing the issues of slavery and statehood. Engaged in significant debates and negotiations, notably contributing to the Missouri Compromise and the Compromise of 1850.

Continue Reading

Charles Napier

American actor in 'The Blues Brothers'
Born
April 12th, 1936 89 years ago
Died
October 5th, 2011 14 years ago — 75 years old

An actor active in film and television from the 1960s until 2011. Gained recognition for roles in various television series and films. Played in 'The Blues Brothers' as Captain Beepers and appeared in 'Rambo: First Blood Part II' as Marshall Murdock. Guest-starred on numerous shows including 'Miami Vice' and 'The A-Team'. His performances spanned over four decades, contributing to numerous cinematic and television productions.

Continue Reading

Martin Brasier

English palaeontologist and biologist
Born
April 12th, 1947 78 years ago
Died
December 16th, 2014 11 years ago — 67 years old

An English palaeontologist and biologist, contributed significantly to the understanding of early life forms and the fossil record. Played a crucial role in studying microbialites and their implications for the origin of life. Served in various academic positions, fostering research in palaeobiology. Published numerous influential papers that advanced the field and collaborated on interdisciplinary projects linking geology with biology.

Continue Reading

Christian IV of Denmark

King of Denmark and Norway
Born
April 12th, 1577 448 years ago
Died
1648 377 years ago — 71 years old

Ruled Denmark and Norway from 1588 until death in 1648. Initiated ambitious architectural projects in cities such as Copenhagen, establishing the city's skyline. Expanded the realm through wars, notably the Kalmar War against Sweden, and sought to increase colonial interests. His reign was marked by significant economic struggles and conflicts during the Thirty Years' War.

Continue Reading

Other People Who Died on February 15th

Haron Amin

Afghan diplomat and ambassador
Born
1969 56 years ago
Died
February 15th, 2015 10 years ago — 46 years old

Served as the Afghan Ambassador to Japan, contributing to diplomatic relations between Afghanistan and Japan. Worked on promoting Afghan culture and interests in Japan, fostering mutual understanding and cooperation. Engaged in various initiatives to support Afghanistan's development during a tumultuous period in its history. Played a pivotal role in multilateral discussions regarding security and economic partnerships.

Continue Reading

Henry Way Kendall

Physicist and Nobel Prize laureate
Born
December 9th, 1926 99 years ago
Died
February 15th, 1999 26 years ago — 72 years old

An American physicist specialized in experimental particle physics, contributed significantly to the understanding of subatomic particles. Conducted research at the Massachusetts Institute of Technology, where advancements in electron scattering experiments were made, leading to important discoveries about the structure of protons and neutrons. Additionally, pursued mountaineering and became known for his dedication to environmental conservation efforts.

Continue Reading

Ethel Merman

Broadway actress and singer of musicals
Born
January 16th, 1908 117 years ago
Died
February 15th, 1984 41 years ago — 76 years old

A prominent Broadway actress and singer, celebrated for powerful vocals and dynamic performances. Starred in iconic productions including 'Annie Get Your Gun', 'Gypsy', and 'Anything Goes'. Embodied the essence of the American musical theater during the mid-20th century. Achieved recognition for a commanding stage presence with a career spanning over three decades. Notable for performing songs that became standards in American music.

Continue Reading

Johnny Weaver

Wrestler and sportscaster
Born
1935 90 years ago
Died
February 15th, 2008 17 years ago — 73 years old

Wrestling career began in the late 1950s, competing in various promotions including the NWA. Gained recognition for championship reigns in the Mid-Atlantic region. Transitioned to sports broadcasting after retiring from in-ring competition, providing commentary and analysis for wrestling events. Contributed to wrestling media through various platforms until death in 2008.

Continue Reading

Lionel Monckton

English composer and lyricist
Born
December 18th, 1861 164 years ago
Died
February 15th, 1924 101 years ago — 62 years old

A significant figure in English musical theatre during the late 19th and early 20th centuries. Contributed to the development of the revue and musical comedy genres, creating a number of popular works. Collaborated with prominent performers and authors of the era. Additionally, served as a musical director and conductor for various productions, showcasing a strong command of stagecraft and composition.

Continue Reading

Ray Evans

Songwriter of the hit song 'Que Sera, Sera'
Born
1915 110 years ago
Died
February 15th, 2007 18 years ago — 92 years old

A prominent American songwriter, contributed significantly to popular music throughout the mid-20th century. Collaborated extensively with composer Jay Livingston. Songs include several chart-topping hits, particularly in the 1950s and 1960s. The song 'Que Sera, Sera (Whatever Will Be, Will Be)' gained tremendous popularity, winning an Academy Award for Best Song in 1956. The partnership with Livingston produced various successful songs, leaving a lasting mark on the music industry.

Continue Reading