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fluid mechanics

(Encyclopedia)fluid mechanics, branch of mechanics dealing with the properties and behavior of fluids, i.e., liquids and gases. Because of their ability to flow, liquids and gases have many properties in common not...

Ptolemaic system

(Encyclopedia)Ptolemaic system tŏlˌəmāˈĭk [key], historically the most influential of the geocentric cosmological theories, i.e., theories that placed the earth motionless at the center of the universe with a...

relativity

(Encyclopedia)relativity, physical theory, introduced by Albert Einstein, that discards the concept of absolute motion and instead treats only relative motion between two systems or frames of reference. One consequ...

Gilbreth, Frank Bunker

(Encyclopedia)Gilbreth, Frank Bunker, 1868–1924, b. Fairfield, Me., and his wife, Lillian Moller Gilbreth, 1878–1972, b. Oakland, Calif., pioneering American industrial engineers. He was a largely self-taught e...

Parmenides

(Encyclopedia)Parmenides pärmĕnˈĭdēz [key], b. c.515 b.c., Greek philosopher of Elea, leading figure of the Eleatic school. Parmenides' great contribution to philosophy was the method of reasoned proof for ass...

Miyazaki, Hayao

(Encyclopedia)Miyazaki, Hayao mēyäˈzäˌkē [key], 1941–, Japanese animator. Japan's preeminent maker of animated films (anime), Miyazaki is thought by many to be the world's finest living animator. He draws, ...

Shankar, Ravi

(Encyclopedia)Shankar, Ravi (Robindra Shankar Chowdhury), 1920–2012, Indian sitarist and composer, b. Varanasi. He was the first Indian instrumentalist to attain an international reputation and is credited with i...

program music

(Encyclopedia)program music Instrumental music of the 19th and 20th cent. that endeavors to arouse mental pictures or ideas in the thoughts of the listener—to tell a story, depict a scene, or impel a mood. Mousso...

Vereshchagin, Vasily Vasilyevich

(Encyclopedia)Vereshchagin, Vasily Vasilyevich vəsēˈlyē vəsēlˈyəvĭch vyĕrĭshchäˈgĭn [key], 1842–1904, Russian painter, soldier, and traveler. He is best known for his military pictures, which portra...

viscosity

(Encyclopedia)viscosity, resistance of a fluid to flow. This resistance acts against the motion of any solid object through the fluid and also against motion of the fluid itself past stationary obstacles. Viscosity...