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memory, in psychology

(Encyclopedia)memory, in psychology, the storing of learned information, and the ability to recall that which has been stored. It has been hypothesized that three processes occur in remembering: perception and regi...

Montaigne, Michel Eyquem, seigneur de

(Encyclopedia)Montaigne, Michel Eyquem, seigneur de mŏntānˈ, Fr. mēshĕlˈ ākĕmˈ sānyörˈ də môNtĕnˈyə [key], 1533–92, French essayist. Montaigne was one of the greatest masters of the essay as a li...

polymerase chain reaction

(Encyclopedia)polymerase chain reaction pŏlˈĭmərāsˌ [key] (PCR), laboratory process in which a particular DNA segment from a mixture of DNA chains is rapidly replicated, producing a large, readily analyzed sa...

automobile racing

(Encyclopedia)automobile racing, sport in which specially designed or modified automobiles race on any of various courses. Automobile racing originated in France in 1894 and appeared in the United States the follow...

Sacco-Vanzetti Case

(Encyclopedia)Sacco-Vanzetti Case săkˈō-vănzĕtˈē [key]. On Apr. 15, 1920, a paymaster for a shoe company in South Braintree, Mass., and his guard were shot and killed by two men who escaped with over $15,000...

artificial limb

(Encyclopedia)artificial limb, mechanical replacement for a missing limb. An artificial limb, called a prosthesis, must be light and flexible to permit easy movement, but must also be sufficiently sturdy to support...

home schooling

(Encyclopedia)home schooling, the practice of teaching children in the home as an alternative to attending public or private elementary or high school. In most cases, one or both of the children's parents serve as ...

strontium

(Encyclopedia)strontium strŏnˈshēəm [key] [from Strontian, a Scottish town], a metallic chemical element; symbol Sr; at. no. 38; at. wt. 87.62; m.p. 769℃; b.p. 1,384℃; sp. gr. 2.6 at 20℃; valence +2. Stro...

mercury poisoning

(Encyclopedia)mercury poisoning, tissue damage resulting from exposure to more than trace amounts of the element mercury or its compounds. Elemental mercury (the silver liquid familiar from thermometers) is the mos...

eugenics

(Encyclopedia)eugenics yo͞ojĕnˈĭks [key], study of human genetics and of methods to improve the inherited characteristics, physical and mental, of the human race. Efforts to improve the human race through bette...