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Rayl (other)
Rayl is a unit of acoustic impedance. Rayl may also refer to: * Adrienne Sophie Rayl (1898–1989), American mathematician and professor * Rayl, California, ghost town, United States * Jimmy Rayl (1941–2019), American basketball player See also * Rail (other) * Rale (other) {{disambiguation, surname ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rayl
A rayl (symbol Rayl) is one of two units of specific acoustic impedance and characteristic acoustic impedance; one an MKS unit, and the other a CGS unit. These have the same dimensions as momentum per volume. The units are named after John William Strutt, 3rd Baron Rayleigh. They are not to be confused with the unit of photon flux, the rayleigh. Explanation Specific acoustic impedance When sound waves pass through any physical substance the pressure of the waves causes the particles of the substance to move. The sound specific impedance is the ratio between the sound pressure and the particle velocity it produces. ''Specific acoustic impedance'' is defined as: : where \underline, \underline and \underline are the specific acoustic impedance, pressure and particle velocity phasors, \mathbf is the position and \omega is the frequency. Characteristic acoustic impedance The rayl is also used for the ''characteristic (acoustic) impedance'' of a medium, which is an inhere ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Adrienne Sophie Rayl
Adrienne Sophie Rayl (1898–1989) was an American mathematician and one of the few women to earn a PhD in mathematics in the United States before World War II. Biography Rayl was born September 25, 1898, in New Orleans, Louisiana, to Sophie Catherine Schick and James John Rayl and was the oldest of their eight children.Green, Judy and Jeanne LaDuke. "Supplementary Material for Pioneering Women in American Mathematics: The Pre-1940 PHD'S" (PDF). https://www.ams.org/publications/authors/books/postpub/hmath-34-PioneeringWomen.pdf She attended public grade school and Girls High School in New Orleans, where she graduated in 1915, first in her class. From there she enrolled at New Orleans Normal School finishing with a teaching diploma, and again she graduated first in her class, in 1917. Teacher Rayl immediately began teaching in the seventh and eighth grades at the Beauregard School and, at the same time, she began working toward her bachelor's degree at Tulane University. She wa ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rayl, California
Rayl (later Hackstaff) is a former town in Lassen County, California. It was located north of Doyle, 4200 feet east-southeast of present-day Herlong. It was named after Stanley Rayl, who built a hotel/store at the site in 1915. The location was the junction between the Western Pacific Railway and the ill-fated narrow gauge A narrow-gauge railway (narrow-gauge railroad in the US) is a railway with a track gauge (distance between the rails) narrower than . Most narrow-gauge railways are between and . Since narrow-gauge railways are usually built with Minimum railw ... Nevada-California-Oregon Railway (NCO). In addition to constructing the hotel, Rayl filed claims for and persuaded the postal service to name the post office after himself rather than, as preferred by the railroad, Hackstaff (the family name of a relative of the company president). In 1917, Rayl tried to persuade the senators from California to establish a training base at the site, and while the proposal was ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Jimmy Rayl
James R. Rayl (June 21, 1941 – January 20, 2019) was an American professional basketball player in the ABA. A 6'2" and 175 lb guard, Rayl played on the first two teams of the Indiana Pacers from 1967 to 1969. High school career Born in Kokomo, Indiana, Rayl went to Kokomo High School from 1956 to 1959. He was named 1959's Indiana Mr. Basketball and the recipient of the Trester Award for the state of Indiana his senior year. College career Rayl attended Indiana University from 1959 to 1963, where he was an All-American his junior and senior seasons. Rayl averaged 20.6 ppg for his career and still holds the IU Hoosiers single-game scoring record of 56 points, which he did twice against Michigan State and Minnesota. He shot 41.6 percent from the floor and 83.5 percent from the line in 68 games as a Hoosier. Professional career Jimmy Rayl was selected by the Cincinnati Royals in the third round and 23rd pick of the 1963 NBA draft. He later signed and played two seasons f ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rail (other)
Rail or rails may refer to: Rail transport *Rail transport and related matters *Railway track or railway lines, the running surface of a railway Arts and media Film * ''Rails'' (film), a 1929 Italian film by Mario Camerini * ''Rail'' (1967 film), a film by Geoffrey Jones for British Transport Films * ''Rail'' (2024 film), a Tamil-language film Magazines * ''Rail'' (magazine), a British rail transport periodical * ''Rails'' (magazine), a former New Zealand based rail transport periodical Other arts *The Rails, a British folk-rock band * Rail (theater) or batten, a pipe from which lighting, scenery, or curtains are hung Technology *Rails framework or Ruby on Rails, a web application framework *Rail system (firearms), a mounting system for firearm attachments *Front engine dragster *Runway alignment indicator lights, a configuration of an approach lighting system *Rule Augmented Interconnect Layout, a specification for expressing guidelines for printed circuit boards; companion ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |