Curt Herzstark
Curt Herzstark (January 26, 1902 – October 27, 1988) was an Austrian engineer. During World War II, he developed plans for a mechanical calculator that fits in a pocket, called the Curta.
April 6, 2026
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Curt Herzstark (January 26, 1902 – October 27, 1988) was an Austrian engineer. During World War II, he developed plans for a mechanical calculator that fits in a pocket, called the Curta.
Wilhelm Schickard was born on April 22, 1592, and died on October 24, 1635. He was a German professor who taught Hebrew and astronomy. In the second half of the 20th century, Franz Hammer, a writer who studied the life of Johannes Kepler, claimed that Schickard had created drawings of a calculating clock.
Johann Philipp Reis (German: [ʁaɪs]; 7 January 1834 – 14 January 1874) was a self-taught German scientist and inventor. In 1861, he created the first make-and-break telephone, now known as the Reis telephone. This device was the first to send a voice using electronic signals.
Johann Alois Senefelder (also known as Alois Johann Nepomuk Franz Senefelder) was born on November 6, 1771, and died on February 26, 1834. He was a German actor and playwright who created a printing method called lithography in the 1790s.
Karl Freiherr von Drais (full name: Karl Friedrich Christian Ludwig Freiherr Drais von Sauerbronn; born April 29, 1785; died December 10, 1851) was a noble German government worker who managed forests and an important inventor during the Biedermeier period. He is known as “the father” and the inventor of the bicycle.
Johann Nicolaus von Dreyse (November 20, 1787 – December 9, 1867) was a German inventor and maker of firearms. He is best known for presenting the Dreyse needle gun to the Prussian army in 1836. The army chose to use this rifle in December 1840, naming it the Leichte Perkussions-Gewehr M 1841.
August Horch was a German engineer and automobile pioneer. He was born on October 12, 1868, and died on February 3, 1951. He founded a large company that later became Audi.
Wilhelm Albert von Opel, also known as Wilhelm von Opel, was a German industrialist born on May 15, 1871, and died on May 2, 1948. He was the majority owner of the German car company Opel. Opel is most famous for bringing the assembly line to the German automobile industry.
Fritz Adam Hermann von Opel (May 4, 1899 – April 8, 1971) was the only son of Wilhelm von Opel and a grandson of Adam Opel, who started the Opel company. Before his father was given a noble title in 1917, he was known as Fritz Adam Hermann Opel. He is best remembered for his work with the Opel RAK, which were the first vehicles powered by rockets that could travel on the ground and in the air with people inside.
Sir Keir Rodney Starmer was born on September 2, 1962. He is a British politician and lawyer who has been the Prime Minister of the United Kingdom since 2024 and the Leader of the Labour Party since 2020. He was the Leader of the Opposition from 2020 to 2024.