HEARING ABILITYDOPPLER EFFECTULTRASOUNDFIND OUT MORESound can be low-pitched, like the rumble of a large truck, or high-pitched, like a whistle. The pitch of a sound depends on the frequency of…
(Encyclopedia) church [Gr. kuriakon=belonging to the Lord], in architecture, a building for Christian worship. The earliest churches date from the late 3d cent.; before then Christians, because of…
The Modern EraWeatherRadar and SatellitesRadar—Scanning the SkiesDoppler—the New GenerationSatellites—a Far-Out LookThe Modern EraPutting It All Together Satellites are capable of providing a wealth…
(Encyclopedia) Fizeau, Armand Hippolyte LouisFizeau, Armand Hippolyte LouisärmäNˈ ēpôlētˈ lwē fēzōˈ [key], 1819–96, French physicist. The first to measure (1849) the velocity of light in air, he also…
Radar—Scanning the SkiesWeatherRadar and SatellitesRadar—Scanning the SkiesDoppler—the New GenerationSatellites—a Far-Out LookThe Modern EraPutting It All Together The first radar (radio detection…
Satellites—a Far-Out LookWeatherRadar and SatellitesRadar—Scanning the SkiesDoppler—the New GenerationSatellites—a Far-Out LookThe Modern EraPutting It All Together If a picture is worth a thousand…
(Encyclopedia) Stark, Johannes, 1874–1957, German physicist, Ph.D. Univ. of Munich, 1897. From 1900 until he retired in 1922, Stark served short stints on the faculties of several academic…
First Place: $100,000 scholarship, Jamie Rubin, 16, Canterbury School, Fort Myers, Fla., for his project identifying small molecules that can be used in treatment for Candida albicans yeast…
(Encyclopedia) Huggins, Sir William, 1824–1910, English astronomer. Using a spectroscope, he began to study the chemical constitution of stars from the observatory attached to his home in Tulse Hill…
(Encyclopedia) blue shift or blueshift, in astronomy, the systematic displacement of individual lines in the spectrum of a celestial object toward the blue, or shorter wavelength, end of the visible…
