Endocrine gland in the brain that produces melatonin. It is large in children and begins to shrink at puberty. The gland may play a significant role in sexual maturation, circadian rhythm and sleep induction, and seasonal affective disorder and depression. In animals it is known to play a major role in sexual development, hibernation, and seasonal breeding.
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Metaphysical problem of the relationship between mind and body. The modern problem stems from the thought of René Descartes, who is responsible for the classical formulation of dualism. Descartes's interactionism had many critics even in his own day. Thomas Hobbes denied the existence of mental substance. Materialism of a sort was also supported by Descartes's correspondent Pierre Gassendi (1592–1655). Benedict de Spinoza posited a single substance of which the mental and the material are attributes; his theory is known as psycho-physical parallelism. More recent views include the double-aspect theory, identity theory, eliminative materialism (which denies the reality of the familiar categories of mental state posited in so-called folk psychology), and theories of supervenience.
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Intentional alteration of the human body for religious, aesthetic, or social reasons. Modifications and mutilations are performed for purposes such as magical protection, medical or pseudo-medical intervention, cosmetic enhancement, and punishment. Alterations include head flattening, insertion of a lip plug, tattoos, scarification, piercing of the ear and other parts of the body, circumcision, foot binding, and amputation. That similar modifications are interpreted very differently from one culture to the next is an excellent indication of the relativity of ideals of beauty and deformity.
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Opaque watercolour. Also known as poster paint, designer's colour, and body colour, it differs from transparent watercolour in that the pigments are bound by liquid glue, which is used as a thinner. The addition of white pigment lightens the tone and lends opacity. Gouache paints dry to a matte finish and, if desired, without visible brush marks. They can be applied thinly or thickly. A wide range of colours are available, including fluorescent and metallic pigments. The suede finish and crisp lines characteristic of many Indian and Islamic miniature paintings is produced by this medium; it is used in Western screen and fan decoration and was used by modern artists such as Georges Rouault and Paul Klee.
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Suit of 15th-century European plate armour.
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(born May 16, 1832, Stockbridge, N.Y., U.S.—died Jan. 6, 1901, Chicago, Ill.) U.S. entrepreneur and innovator. Armour's first entrepreneurial success was in California mining endeavours. He vastly expanded his family's Midwestern grain and meatpacking business in 1875, originating the use of byproducts and the sale of canned meat. When railcar refrigeration was introduced in the 1880s (see Gustavus Franklin Swift), he established distributing plants in eastern states and began exporting Armour meat products to Europe. His Armour & Co. enterprises helped make Chicago the meatpacking capital of the world.
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(born May 16, 1832, Stockbridge, N.Y., U.S.—died Jan. 6, 1901, Chicago, Ill.) U.S. entrepreneur and innovator. Armour's first entrepreneurial success was in California mining endeavours. He vastly expanded his family's Midwestern grain and meatpacking business in 1875, originating the use of byproducts and the sale of canned meat. When railcar refrigeration was introduced in the 1880s (see Gustavus Franklin Swift), he established distributing plants in eastern states and began exporting Armour meat products to Europe. His Armour & Co. enterprises helped make Chicago the meatpacking capital of the world.
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Theoretical surface that absorbs all radiant energy that falls on it, and radiates electromagnetic energy at all frequencies, from radio waves to gamma rays, with an intensity distribution dependent on its temperature. Because all visible light falling on such a surface is absorbed without reflection, the surface will appear black as long as its temperature is such that its emission peak is not in the visible portion of the spectrum. Seealso absorption.
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With regard to living things, a body is the integral physical material of an individual. "Body" often is used in connection with appearance, health issues and death. The study of the workings of the body is physiology.