Below are items I have found that make some of our folks extra famous.
From Wikipedia, the free encyclopedia
Alice Gentle (June 30, 1885,Chatsworth, Illinois - February 28, 1958, Oakland, California) was an American operatic mezzo-soprano. She began her career in 1908 as a member of the opera chorus in Oscar Hammerstein's Manhattan Opera Company (MOC). Impressed with Gentle's talents, Hammerstein began casting her in secondary roles in MOC productions in 1909, beginning with the role of Mercédès in Georges Bizet's Carmen. She sang roles with the MOC and with Hammerstein's Philadelpha Opera Company through 1910; including Emilia in Otello, the First maid in Elektra, Flora in La traviata, Lola in Cavalleria- rusticana, Maddalena in Rigoletto, Nicklausse in The Tales of Hoffmann, and Siébel in Faust among others.
In 1916 Gentle portrayed the role of Federico in Ambroise Thomas's Mignon at La Scala in Milan. She sang one season at the Metropolitan Opera, making her debut with the company in 1918 as Preziosilla in La forza del destino. Later that year she created the role of Frugola in the world premiere of Puccini's II Tabarro. Her only other role at the Met was Fatima in Oberon in 1919. In 1923 she toured the United States as Carmen with the San Carlo Opera Company. She appeared in three films during the early 1930s: The Song of the Flame (1930), Golden Dawn (1930), and Flying Down to Rio (1933). In 1940 she made her final stage appearance at the Los Angeles Civic Light Opera as Mrs. Cripps in H.M.S. Pinafore.
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HAROLD A. ZAHL
From Wikipedia, the free encyclopedia
Harold A. Zahl (1905–1983) was an American physicist who had a 35-year career with the U.S. Army Signal Corps Laboratories, making major contributions to radar development.
Harold Zahl was born in Chatsworth, Illinois the son of a Methodist minister. While still in high school, he became an amateur radio operator (call letters 6BHI). He graduated in physics and mathematics from North Central College in Naperville, Illinois, in 1927, and then attended the University of Iowa where he earned the M.A. degree in 1929 and the Ph.D. degree in 1931, both in solid-state physics.
Upon completing his doctorate, Zahl joined the staff of the Signal Corps Laboratories (SCL) at Fort Monmouth, New Jersey. At the same time, he was commissioned a First Lieutenant in the U.S. Army Signal Corps.
Zahl’s initial work at the SCL was in research on detecting aircraft using thermal radiation from their engines. In 1934, he filed a patent application on “The Art of Locating Objects by Heat Radiation.” Initially held up because of its classified nature, this was eventually granted in 1946. In 1936, the SCL started research in Radio Position Finding (RPF – later called radar). Zahl participated in the development of the Army’s first fielded RPF system, the SCR-268.
While the SCR-268 was being completed, development of an improved RPF system started and Zahl, now a Major, was assigned to lead the effort. To use a common antenna for both transmitting and receiving, Zahl invented a gas-discharge device, called a duplexer. Two configurations of the RPF emerged: the SCR-270 (mobile) and the SCR-271 (fixed-site). These systems started to be fielded in 1940, and were used throughout the war.
The early systems had large antennas. To reduce their size, a transmitter tube that could produce high-power signals at a much higher frequency was needed (antenna size is inversely proportional to frequency). Zahl developed such a tube in 1939. Called the VT-158, it was capable of 240-kW pulsed power at up to 600 MHz. After the start of World War II, this tube formed the base of the AN/TPS-3, a light-weight, portable. early-warning radar, and a companion the AN/TQS-3, a mortar-detection radar. A total of about 900 of these sets were built and used extensively by the Army, particularly in the Pacific Theater. (The name 'radar' took the place of 'RPF' in 1940.)
The SCL reorganized in 1942, and the radar activities became the Camp Evans Signal Laboratory. For the next several years, Zahl worked closely with the Radiation Laboratory at MIT in their development of microwave radars. He was promoted to Lieutenant Colonel. At the close of the war, he resigned his commission and became a civilian employee at Camp Evans.
In 1948, Zahl was named Director of Research, and remained in this position until retiring in 1966. During these years, he made many personal contributions to advancing electronic technologies.
See his picture here.
Harold Zahl ’27, Ph.D.
1964 award recipient
Harold Zahl was a distinguished American physicist who was recognized as an inventor of scientific devices and processes. He was a top administrator in the Armed Forces research and development program, as well as an author of scientific articles and reviews. A pioneer in the field of radar in the 1930s, Zahl invented the infrared detector which led to the assignment of responsibility for detection of ground, sea and air targets to the Signal Corps. His invention of the pneumatic cell led to the development of the first Army radar and the acceptance of radar as a major means of military surveillance and an invaluable aid to navigation.
His picture appeared in Life magazine in 1959.
See his headstone here.
From: Nasa History
Harold Adelbert Zahl (1904-1973) earned his B.A., M.S., and Ph.D. from North Central College in Naperville, Ill. He was a physicist for the United States Army from 1931-66, where he was the Director of Research of the Electronics Lab, director of the Atmospheric Sciences Lab, and worked for the U.S. Electronics Command. His decorations include the Department of the Army Decoration for Exceptional Civilian Service, Scientific Achievement Award from the Service Clubs of Long Island, Federal Business Association of New York Outstanding Vicilian Award, and the Distinguished Alumnus award of North Central College. In addition to authoring Electrons Away… or Tales of a Government Scientist (1968), he has researched and published works regarding verification of wave particle dualism of atoms and propagation of sound through the ocean, radar, and electron tubes. He developed the infrared detecting cell, tubes used in radar tube (ie: the Zahl tube) and radar switching tubes. (Who’s Who in Science from Antiquity to Present; Marquis Who’s Who Inc. Debus, Allen G. 1968).
Note : Conflict: The wiki bio has his father a Methodist minister. I believe he was minister of the German Evangelical Church. The birth and death date may also be wrong. I am checking it out.