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Feuerbach, Ludwig Andreas
(Encyclopedia)Feuerbach, Ludwig Andreas foiˈərbäkh [key], 1804–72, German philosopher, educated at Heidelberg and Berlin; son of Paul Johann Anselm von Feuerbach. At first a Hegelian, he abandoned absolute id...Fortescue, Sir John
(Encyclopedia)Fortescue, Sir John fôrˈtĭskyo͞o [key], c.1394–1476, English jurist. A supporter of the Lancastrian king Henry VI, he was chief justice of the Court of King's Bench from 1442 until 1461, when He...Griffenfeld, Peder Schumacher, Count
(Encyclopedia)Griffenfeld, Peder Schumacher, Count pāˈᵺər sho͞oˈmäkhər, grĭfˈənfĕlt [key], 1635–99, Danish politician. The son of a merchant, he became (1665) secretary to Frederick III. In 1665 Grif...substance
(Encyclopedia)substance, in philosophy, term used to denote the changeless substratum presumed in some philosophies to be present in all being. Aristotle defined substance as that which possesses attributes but is ...calculus
(Encyclopedia) CE5 The derivative f″(x) of the function f(x) at the point P represents the slope of the tangent line at that point. CE5 The area under the curve y=f(x) may be found by calculating the sum of ...atomic mass
(Encyclopedia)atomic mass, the mass of a single atom, usually expressed in atomic mass units (amu). Most of the mass of an atom is concentrated in the protons and neutrons contained in the nucleus. Each proton or n...Royce, Josiah
(Encyclopedia)Royce, Josiah, 1855–1916, American philosopher, b. California, grad. Univ. of California, 1873. After studying in Germany and at Johns Hopkins, he returned to California to teach (1878–82). From 1...pitch, in music
(Encyclopedia)pitch, in music, the position of a tone in the musical scale, today designated by a letter name and determined by the frequency of vibration of the source of the tone. Pitch is an attribute of every m...Avicenna
(Encyclopedia)Avicenna ăvĭsĕnˈə [key], Arabic Ibn Sina, 980–1037, Islamic philosopher and physician, of Persian origin, b. near Bukhara. He was the most renowned philosopher of medieval Islam and the most in...geochemistry
(Encyclopedia)geochemistry, study of the chemical changes on the earth. More specifically, it is the study of the absolute and relative abundances of chemical elements in the minerals, soils, ores, rocks, water, an...Browse by Subject
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