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DK Space: Astronomy

WHEN DID PEOPLE FIRST STUDY THE SKY? WHAT DO ASTRONOMERS STUDY TODAY? TELESCOPESFIND OUT MOREAstronomy is the science that studies the stars and all the other bodies (objects) in space. The…

DK Science: Cameras

PINHOLE CAMERAFILM CAMERAMILESTONES OF PHOTOGRAPHYPHOTOGRAPHIC FILMDIGITAL PHOTOGRAPHYFIND OUT MOREA camera is a device that records pictures. It consists of a sealed box that catches the light…

Huber, Robert

(Encyclopedia) Huber, RobertHuber, Roberth&oomacr;ˈbər [key], 1937–, German biochemist. After receiving his doctorate at Munich Technical Univ., he worked both there and at the Max Planck…

Hevesy, Georg von

(Encyclopedia) Hevesy, Georg vonHevesy, Georg vongāˈôrkh fən hĕˈvĕshē [key], 1885–1966, Hungarian physicist and chemist. He received the 1943 Nobel Prize in Chemistry for his work on the use of…

gaillardia

(Encyclopedia) gaillardiagaillardiagālärˈdēə [key], any plant of the genus Gaillardia of the Asteaceae family (aster family), including annual, biennial, and perennial herbs with showy heads of red…

Carrington, Leonora

(Encyclopedia) Carrington, Leonora, 1917–2011, English-born Mexican surrealist painter, novelist, and eccentric, studied art at Ozenfant Academy, London (1935–38). From a wealthy Anglo-Irish family,…

Perils of Pollution

Global Warming Many scientists believe human-caused pollution is making the world a warmer place, a process called global warming. Scientists also think…

fish, in zoology

(Encyclopedia) CE5 Anatomy of a ray-finned fish fish, limbless aquatic vertebrate animal with fins and internal gills. Traditionally the living fish have been divided into three class: the…