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quantum theory

(Encyclopedia)quantum theory, modern physical theory concerned with the emission and absorption of energy by matter and with the motion of material particles; the quantum theory and the theory of relativity togethe...

modern art

(Encyclopedia)modern art, art created from the 19th cent. to the mid-20th cent. by artists who veered away from the traditional concepts and techniques of painting, sculpture, and other fine arts that had been prac...

Spanish literature

(Encyclopedia)Spanish literature, the literature of Spain. The Spanish civil war (1936–39) truncated the cultural evolution of the country. Many writers went into exile. Salinas, Guillén, Juan Larrea, an...

directing

(Encyclopedia)directing, the art of leading dramatic performances on the stage or in films. The modern theatrical director is in complete charge of all the artistic aspects of a dramatic presentation. It is the dir...

atom

(Encyclopedia)CE5 Bohr-Rutherford atom CE5 Probability distribution of the electron in the hydrogen atom: A. Ground state B. Highly excited state atom [Gr.,=uncuttable (indivisible)], basic unit of matte...

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 visible light range ...

mythology

(Encyclopedia)mythology [Greek,=the telling of stories], the entire body of myths in a given tradition, and the study of myths. Students of anthropology, folklore, and religion study myths in different ways, distin...

asteroid

(Encyclopedia)CE5 The asteroid belt lies between the orbits of Mars and Jupiter. Gaps where no asteroids are found are called Kirkwood gaps. The Trojan asteroids share Jupiter's orbit with the planet. asteroid,...

comic strip

(Encyclopedia)comic strip, combination of cartoon with a story line, laid out in a series of pictorial panels across a page and concerning a continuous character or set of characters, whose thoughts and dialogues a...

psychology

(Encyclopedia)psychology, science or study of the thought processes and behavior of humans and other animals in their interaction with the environment. Psychologists study processes of sense perception, thinking, l...