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Fuller, Loie

(Encyclopedia)Fuller, Loie lōˈē [key], 1862–1928, American dancer and theatrical innovator, b. Fullersburg, Ill., as Mary Louise Fuller. She began her career as a child, performing in burlesque, vaudeville, th...

Sperry, Elmer Ambrose

(Encyclopedia)Sperry, Elmer Ambrose, 1860–1930, American inventor, b. Cortland, N.Y. Although probably best known for his work on the gyroscope, he also invented the gyrocompass (1910), an extremely effective hig...

mercury, chemical element

(Encyclopedia)mercury or quicksilver [from the Roman god Mercury], metallic chemical element; symbol Hg [Lat. hydrargyrum=liquid silver]; at. no. 80; at. wt. 200.59; m.p. −38.842℃; b.p. 356.58℃; sp. gr. 13.55...

Heda, Willem Claasz

(Encyclopedia)Heda, Willem Claasz vĭlˈəm kläs hāˈdä [key], 1594–c.1678, Dutch still-life painter. His excellent studies of tables laden with food, called ontbijt [breakfast piece] still life, are seen in m...

mental age

(Encyclopedia)mental age: see intelligence.

motor, electric

(Encyclopedia)CE5 Motor: In the AC motor, current fed to the conducting loop of wire causes it to rotate in the magnetic field, thus turning the shaft on which the loop is mounted. In the DC motor, the direction...

Golden Age

(Encyclopedia)Golden Age, in classical mythology: see mythology. ...

Gilded Age

(Encyclopedia)Gilded Age, a term used to describe a period in United States history—from roughly 1870 to 1900—when the wealthy elite consisted of industrialists w...

fuse, electric

(Encyclopedia)fuse, electric, safety device used to protect an electric circuit against an excessive current. A fuse consists essentially of a strip of low-melting alloy enclosed in a suitable housing. It is connec...

Ice Age

(Encyclopedia)Ice Age: see Pleistocene epoch.