FYI May 07, 2019

On This Day

1895 – In Saint Petersburg, Russian scientist Alexander Stepanovich Popov demonstrates to the Russian Physical and Chemical Society his invention, the Popov lightning detector—a primitive radio receiver. In some parts of the former Soviet Union the anniversary of this day is celebrated as Radio Day.
Alexander Stepanovich Popov (sometimes spelled Popoff; Russian: Алекса́ндр Степа́нович Попо́в; March 16 [O.S. March 4] 1859 – January 13 [O.S. December 31, 1905] 1906) was a Russian physicist who is acclaimed in his homeland and some eastern European countries as the inventor of radio.[1][2][3]

Popov’s work as a teacher at a Russian naval school led him to explore high frequency electrical phenomena. On May 7, 1895, he presented a paper on a wireless lightning detector he had built that worked via using a coherer to detect radio noise from lightning strikes. This day is celebrated in the Russian Federation as Radio Day. In a March 24, 1896, demonstration, he used radio waves to transmit a message between different campus buildings in St. Petersburg. His work was based on that of another physicist – Oliver Lodge, and contemporaneous with the work of Guglielmo Marconi. Marconi had just registered a patent with the description of the device two months after first transmission of radio signals made by Popov.[4]



Born On This Day

1845 – Mary Eliza Mahoney, African American nurse and activist (d. 1926)
Mary Eliza Mahoney (May 7, 1845 – January 4, 1926) was the first African American to study and work as a professionally trained nurse in the United States, graduating in 1879. Mahoney was one of the first African Americans to graduate from a nursing school, and she prospered in a predominantly white society. She also challenged discrimination against African Americans in nursing.[1]

In 1908, Mahoney co-founded the National Association of Colored Graduate Nurses (NACGN) with Adah B. Thoms. This organization attempted to uplift the standards and everyday lives of African-American registered nurses. The NACGN had a significant influence on eliminating racial discrimination in the registered nursing profession.[1] In 1951, the NACGN merged with the American Nurses Association.

Mahoney has received many honors and awards for her pioneering work. She was inducted into the American Nurses Association Hall of Fame in 1976 and into the National Women’s Hall of Fame in 1993.




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