(Encyclopedia) octane number, figure of merit representing the resistance of gasoline to premature detonation when exposed to heat and pressure in the combustion chamber of an internal-combustion…
(Encyclopedia) Magellanic CloudsMagellanic Cloudsmăjˌəlănˈĭk [key], two dwarf galaxies located in the far southern sky and visible to the unaided eye; they are classified as irregular because they…
(Encyclopedia) white dwarf, in astronomy, a type of star that is abnormally faint for its white-hot temperature (see mass-luminosity relation). Typically, a white dwarf star has the mass of the sun…
(Encyclopedia) radioactive isotope or radioisotope, natural or artificially created isotope of a chemical element having an unstable nucleus that decays, emitting alpha, beta, or gamma rays until…
(Encyclopedia) megalithic monumentmegalithic monumentmĕgəlĭthˈĭk [key] [Gr.,=large stone], in archaeology, a construction involving one or several roughly hewn stone slabs of great size; it is…
(Encyclopedia) projective geometry, branch of geometry concerned with those properties of geometric figures that remain invariant under projection. The basic elements are points, lines, and planes,…
Homework Center Frequently Asked Questions Subjects » Geography » History » Language Arts » Mathematics » Science » Social StudiesSkillsWriting | ResearchSpeaking &…
BotanyAdvanced-Level Science ProjectsBotanyHow Close to a Plant Must Pesticides Be in Order to Be Beneficial?Can Healthy Plants Be Grown in Soil Containing No Microorganisms? Can Cloning Make a…
Source: National Marine Fisheries Services' Northeast Fisheries Science CenterHow many kinds of lobsters are there in the United States? Two kinds of lobster-like crustaceans exist in U.S. waters…
EXERCISEHYGIENEDIETFIND OUT MOREMany factors play a part in keeping your body and mind in good health. These include taking plenty of EXERCISE, eating a healthy DIET, and observing some…
