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Vaihinger, Hans

(Encyclopedia) Vaihinger, HansVaihinger, Hanshäns fīˈhĭng-ər [key], 1852–1933, German philosopher. Educated at Tübingen, Leipzig, and Berlin, he served at Strasbourg first as tutor and then as…

Buridan, Jean

(Encyclopedia) Buridan, JeanBuridan, Jeanby&oobreve;rˈĭdən, Fr. zhäN bürēdäNˈ [key], d. c.1358, French scholastic philosopher. Rector of the Univ. of Paris, he was a follower of William of Occam…

temperament

(Encyclopedia) temperament, in music, the altering of certain intervals from their acoustically correct values to provide a system of tuning whereby music can move from key to key without…

timberline

(Encyclopedia) timberline, elevation above which trees cannot grow. Its location is influenced by the various factors that determine temperature, including latitude, prevailing wind directions, and…

entropy

(Encyclopedia) entropyentropyĕnˈtrəpē [key], quantity specifying the amount of disorder or randomness in a system bearing energy or information. Originally defined in thermodynamics in terms of heat…

geometric problems of antiquity

(Encyclopedia) geometric problems of antiquity, three famous problems involving elementary geometric constructions with straight edge and compass, conjectured by the ancient Greeks to be impossible…

mass number

(Encyclopedia) mass number, often represented by the symbol A, the total number of nucleons (neutrons and protons) in the nucleus of an atom. All atoms of a chemical element have the same atomic…

Clausius, Rudolf Julius Emanuel

(Encyclopedia) Clausius, Rudolf Julius EmanuelClausius, Rudolf Julius Emanuelr&oomacr;ˈdôlf y&oomacr;ˈly&oobreve;s āmäˈn&oomacr;ĕl klouˈzē&oobreve;s [key], 1822–88, German…

hawkweed

(Encyclopedia) hawkweed, any species of the genus Hieracium of the family Asteraceae (aster family), widely distributed perennials, chiefly of open fields. The small, dandelionlike flower heads are…

raft

(Encyclopedia) raft, floating platform of wood, cork, or air-inflated rubber for conveying goods or people. Originally, several logs, bound together by vines, strips of animal skin, and later rope,…