(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) 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) 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) bolometerbolometerbōlŏmˈətər, bə– [key], instrument for detecting and measuring radiation, e.g., visible light, infrared radiation, and ultraviolet radiation, in amounts as small as…
IntroductionCell Theory, Form, and FunctionIntroductionProkaryotes and EukaryotesVirusesFluid Mosaic Model of Membrane Structure and FunctionCell Cycle: Interphase, Mitosis, Cytokinesis Deep…
Dinosaurs lived throughout the Mesozoic Era, which began 245 million years ago and lasted for 180 million years. It is sometimes called the Age of the Reptiles. The era is divided into three…
WHAT CAN FORCES DO? HOW CAN YOU MEASURE A FORCE? WHAT ARE BALANCED FORCES? GRAVITYFIND OUT MOREWhen you strike a ball with a bat, stretch a rubber band, or lift a suitcase, you are applying a force.…
