(Encyclopedia) Keeling, Charles David, 1928–2005, U.S. geochemist, b. Scranton, Pa., Ph.D. Northwestern Univ., 1954. As a postdoctoral fellow at the California Institute of Technology (1953–56), he…
(Encyclopedia) Mayer, Johann TobiasMayer, Johann Tobiasyōˈhän tōbēˈäs mīˈər [key], 1723–62, German mathematician and astronomer. In 1751 he became professor of economics and mathematics at the Univ.…
(Encyclopedia) sun grebe, common name for a tropical, mainly aquatic bird of the family Heliornithidae. Sun grebes, also called finfoots, are remarkable for their colorful, puffy-toed, webbed feet,…
Upper-Air ObservationsWeatherMeasuring the AtmosphereThe Take on TemperatureIs the Pressure Getting to You?The Wind in the WillowsIt's Not the Heat, It's the HumidityMeasuring the RainPlacing the…
It's Not the Heat, It's the HumidityWeatherMeasuring the AtmosphereThe Take on TemperatureIs the Pressure Getting to You?The Wind in the WillowsIt's Not the Heat, It's the HumidityMeasuring the…
(Encyclopedia) hour angle, in astronomy, a coordinate in the equatorial coordinate system. The hour angle of a celestial body is the angular distance, expressed in hours, minutes, and seconds (one…
(Encyclopedia) Froude, WilliamFroude, Williamfr&oomacr;d [key], 1810–79, English engineer and naval architect, brother of J. Anthony Froude; educated at Oxford. In 1837 he worked on the Bristol…
