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Carracci

(Encyclopedia)Carracci kärätˈchē [key], family of Italian painters of the Bolognese school, founders of an important academy of painting. Lodovico Carracci, 1555–1619, a pupil of Tintoretto in Venice, was inf...

eye

(Encyclopedia)CE5 Cross section of human eye eye, organ of vision and light perception. In humans the eye is of the camera type, with an iris diaphragm and variable focusing, or accommodation. Other types of ey...

space medicine

(Encyclopedia)space medicine, study of the medical and biological effects of space travel on living organisms. The principal aim is to discover how well and for how long humans can withstand the extreme conditions ...

National Aeronautics and Space Administration

(Encyclopedia)National Aeronautics and Space Administration (NASA), civilian agency of the U.S. federal government with the mission of conducting research and developing operational programs in the areas of space e...

gene therapy

(Encyclopedia)gene therapy, the use of genes and the techniques of genetic engineering in the treatment of a genetic disorder or chronic disease. There are many techniques of gene therapy, all of them still in expe...

drug poisoning

(Encyclopedia)drug poisoning, toxic effects caused by an administered drug. Worldwide more than 9 million natural and synthetic chemicals have been identified; fewer than 3000 cause more than 95% of acidental and d...

Spenser, Edmund

(Encyclopedia)Spenser, Edmund, 1552?–1599, English poet, b. London. He was the friend of men eminent in literature and at court, including Gabriel Harvey, Sir Philip Sidney, Sir Walter Raleigh, and Robert Sidney,...

Monet, Claude

(Encyclopedia)Monet, Claude klōd mônāˈ [key], 1840–1926, French landscape painter, b. Paris. Monet was a founder of impressionism. He adhered to its principles throughout his long career and is considered the...

Santayana, George

(Encyclopedia)Santayana, George säntäyäˈnä [key], 1863–1952, American philosopher and poet, b. Madrid, Spain. Santayana's philosophic stance has been given the apparently opposite descriptions of materiali...

shaman

(Encyclopedia)shaman shäˈmən, shāˈ–, shăˈ– [key], religious practitioner in various, generally small-scale societies who is believed to be able to diagnose, cure, and sometimes cause illness because of a...