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gravitation
(Encyclopedia) gravitation, the attractive force existing between any two particles of matter. The term gravitygravity is commonly used synonymously with gravitation, but in correct usage a…Afroasiatic languages
(Encyclopedia) Afroasiatic languagesAfroasiatic languagesăfˌrōāˌzhēătˈĭk [key], formerly Hamito-Semitic languagesHamito-Semitic languageshămˈĭtō-səmĭtˈĭk [key], family of languages spoken by more…Paul, Saint
(Encyclopedia) Paul, Saint, d. a.d. 64? or 67?, the apostle to the Gentiles, b. Tarsus, Asia Minor. He was a Jew. His father was a Roman citizen, probably of some means, and Paul was a tentmaker by…light
(Encyclopedia) light, visible electromagnetic radiation. Of the entire electromagnetic spectrum, the human eye is sensitive to only a tiny part, the part that is called light. The wavelengths of…nucleus, in physics
(Encyclopedia) nucleus, in physics, the extremely dense central core of an atom. Following the discovery of radioactivity by A. H. Becquerel in 1896, Ernest Rutherford identified two types of…Life Expectancy by Age, 1850–2011
The expectation of life at a specified age is the average number of years that members of a hypothetical group of people of the same age would continue to live if they were subject throughout the…Percy Bysshe Shelley: Notes on Queen Mab
by Percy Bysshe Shelley 9NOTE ON QUEEN MAB, BY MRS. SHELLEYNotes on Queen Mab Shelley's Notes 1. 242, 243:- The sun's unclouded orb Rolled through the black concave. Beyond our…physics
(Encyclopedia) physics, branch of science traditionally defined as the study of matter, energy, and the relation between them; it was called natural philosophy until the late 19th cent. and is still…State of the Union Address: William H. Taft (December 5, 1911)
William H. Taft (December 5, 1911) Jump to Part II | Part III | Part IV This message is the first of several which I shall send to Congress during the interval between the opening of its regular…Trending
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