Charles F. Brush
Charles Francis Brush was born on March 17, 1849, and died on June 15, 1929. He was an American engineer, inventor, business owner, and someone who helped others through charitable work.
April 5, 2026
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Charles Francis Brush was born on March 17, 1849, and died on June 15, 1929. He was an American engineer, inventor, business owner, and someone who helped others through charitable work.
Pavel Nikolayevich Yablochkov (also spelled as Jablochkoff; Russian: Павел Николаевич Яблочков; September 14 [O.S. September 2], 1847 – March 31 [O.S. March 19], 1894) was a Russian electrical engineer, businessman, and the inventor of the Yablochkov candle, a type of electric light that uses carbon arcs.
Sir Humphry Davy, 1st Baronet (17 December 1778 – 29 May 1829), was a British chemist and inventor. He created the Davy lamp and an early version of the arc lamp. He discovered several elements for the first time using electricity: potassium and sodium in 1807, and calcium, strontium, barium, magnesium, and boron the next year.
Sir Joseph Wilson Swan FRS was born on October 31, 1828, and died on May 27, 1914. He was an English scientist and inventor who worked as a physicist and chemist. He is known for being one of the first people to create a working incandescent light bulb.
Sir William Crookes (pronounced “crooks”; June 17, 1832 – April 4, 1919) was an English scientist who studied chemistry and physics. He attended the Royal College of Chemistry, which is now part of Imperial College London, and worked on studying light patterns. He helped develop vacuum tubes, creating the Crookes tube in 1875.
Sir John Ambrose Fleming was born on November 29, 1849, and died on April 18, 1945. He was a British electrical engineer and physicist. He is famous for inventing the vacuum tube radio transmitter, which was used to make the first transatlantic radio transmission.
Guglielmo Giovanni Maria Marconi, 1st Marquess (25 April 1874 – 20 July 1937), was an Italian radio engineer, inventor, and politician. He is best known for developing a practical system to send messages using radio waves, which became the basis for wireless telegraphy. Because of this work, he is often credited with inventing radio.
Edwin Howard Armstrong (December 18, 1890 – February 1, 1954) was an American engineer and inventor who created FM (frequency modulation) radio and the superheterodyne receiver system. These inventions improved radio communication by reducing interference and increasing signal clarity. He held 42 patents and received many awards, including the first Medal of Honor from the Institute of Radio Engineers (now IEEE), the French Legion of Honor, the 1941 Franklin Medal, and the 1942 Edison Medal.
Lee de Forest was born on August 26, 1873, and died on June 30, 1961. He was an American inventor, electrical engineer, and an important early figure in the field of electronics. In 1908, he created the first practical electronic amplifier, a three-part vacuum tube called the Audion.
Reginald Aubrey Fessenden was born on October 6, 1866, and died on July 22, 1932. He was a Canadian-American electrical engineer and inventor who received hundreds of patents related to radio and sonar between 1891 and 1936. Seven of these patents were granted after his death.