John Appold
English engineer and inventor of the screw propeller
English engineer and inventor of the screw propeller
1865
161 years ago — 65 years old
Scientists & Innovators
United Kingdom
An engineer focused on marine technology, contributed significantly to the development of screw propellers in the 19th century. This innovation enhanced the efficiency of ships, leading to increased speed and improved maneuverability. Engaged in multiple engineering projects, Appold's designs were instrumental in advancing naval architecture during the era. His work laid the groundwork for future maritime engineering solutions.
Invented the screw propeller
Improved ship efficiency
Contributed to naval architecture
Served in the Australian House of Representatives from 1980 to 1996. Represented the seat of Gellibrand for the Australian Labor Party. Held several ministerial positions, including Minister for Finance and Minister for Industrial Relations. Played a significant role in economic policy during the 1990s, focusing on fiscal management and industrial reforms. Retired from politics in 1996.
Continue ReadingSignificant contributions in the field of chemistry focused on conductive polymers and organic electronics. Awarded the Nobel Prize in Chemistry in 2000 alongside two other scientists for research on electrically conductive polymers. Held academic positions at several institutions, including the University of Pennsylvania and Victoria University of Wellington. Actively contributed to advancements in materials science throughout the academic career.
Continue ReadingBorn in 1969, a journalist with a focus on political and social issues in Norway. Served as editor of the newspaper Dagen. Contributed to various media outlets, providing commentary on cultural and societal developments. Engaged in discussions regarding freedom of expression and the role of media in society.
Continue ReadingThis individual had a significant career in journalism, primarily working for the BBC. Contributions included reporting on major political events and serving as a political correspondent. Gained visibility through appearances on programs such as 'Strictly Come Dancing', displaying a blend of journalistic integrity and entertainment. Worked extensively in the field of broadcasting and journalism for several decades.
Continue ReadingRuled as King of Spain from 1598 to 1621. Oversaw a period marked by military conflicts, particularly the Thirty Years' War. Known for the decline of Spanish power during his reign, characterized by financial difficulties and military defeats. Fostered a policy of peace, leading to the signing of several treaties. Commissioned the construction of the Royal Palace of Madrid, which remains an architectural highlight in Spain's capital.
Continue ReadingAn acclaimed author, contributions include writings that explore themes of love and freedom. Published several novels that have captivated readers, including 'Le Zèbre' and 'Les Lettres de mon père'. Works often portray deep emotional journeys and complex relationships, resonating with a wide audience. Also ventured into theater, creating plays that have been staged in various theaters. In addition to writing, engaged in various social initiatives aimed at promoting literacy and creativity among youth.
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