actressBorn: 3/25/1964Birthplace: Los Angeles, Calif. Raised on Long Island, Hamilton contracted the acting bug at an early age. A graduate of fine arts from New York University, she studied drama…
Ratio, Proportion, and Geometric MeansGeometrySimilar TrianglesRatio, Proportion, and Geometric MeansProperties of Similar TrianglesThe Big Three Before you start analyzing similar triangles, you…
Does Caffeine Increase Heart Rate?Intermediate-Level Science ProjectsHow Fast Are You? Testing and Measuring ReflexesDetermining Your Speediest ShoesDoes Caffeine Increase Heart Rate? Does your mom…
(Encyclopedia) compass. 1 In mathematics, an instrument for making circles and measuring distances. Frequently called a pair of compasses, it consists of two metal legs with one end of each attached…
(Encyclopedia) altimeteraltimeterăltĭmˈĭtər, ălˈtĭmēˌtər [key], device for measuring altitude. The most common type is an aneroid barometer calibrated to show the drop in atmospheric pressure in…
(Encyclopedia) HeleneHelenehəlēnˈ, hĕlˈənə [key], in astronomy, one of the named moons, or natural satellites, of Saturn. Also known as Saturn XII (or S12), Helene is an irregularly shaped (…
(Encyclopedia) astrolabeastrolabeăsˈtrəlāb [key], instrument probably used originally for measuring the altitudes of heavenly bodies and for determining their positions and movements. Although its…
(Encyclopedia) Calypso, in astronomy, one of the named moons, or natural satellites, of Saturn. Also known as Saturn XIV (or S14), Calypso is a small, irregularly shaped (nonspherical) body measuring…
(Encyclopedia) spectroscope, optical instrument for producing spectral lines and measuring their wavelengths and intensities, used in spectral analysis (see spectrum). When a material is heated to…
(Encyclopedia) tobogganing, sport of coasting down snowy hillsides or chutes on a toboggan, a flat-bottomed vehicle made of hard wood. The toboggan, typically measuring 1.5 ft by 6–8 ft (.46 m by 1.8…
