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DK Science: Computer Reconstruction

Dinosaur on screenRebuilt in 3-DToday computers are used in all aspects of dinosaur study. In the field, fossil sites can be mapped and plotted using electronic measuring devices. In the laboratory…

Summer Olympics Through the Years: 1928

AmsterdamTop 10 StandingsLeading Medal WinnersTrack & FieldSwimmingTeam SportsBoxingCyclingEquestrianFencingGymnasticsModern PentathlonRowingWeightliftingFreestyle WrestlingGreco-Roman…

atomic number

(Encyclopedia) atomic number, often represented by the symbol Z, the number of protons in the nucleus of an atom, as well as the number of electrons in the neutral atom. Atoms with the same atomic…

green flash

(Encyclopedia) green flash or emerald flash, a refractive phenomenon of the atmosphere where the top edge of the setting (or, less frequently, rising) sun will momentarily turn emerald green. The…

Franklin, Rosalind Elsie

(Encyclopedia) Franklin, Rosalind Elsie, 1920–58, English molecular biologist and chemist, grad. Newnham College, Cambridge (1941). She spent most of the war years (1942–45) working for the British…

aloe

(Encyclopedia) aloealoeălˈō [key] [Gr.], any species of the genus Aloe, succulent perennials of the family Lilaceae (lily family), native chiefly to the warm dry areas of S Africa and also to…

Piltdown man

(Encyclopedia) Piltdown man, name given to human remains found during excavations (1908–15) at Piltdown, Sussex, England, by Charles Dawson. The find led to much speculation and argument. Since they…

Yonath, Ada E.

(Encyclopedia) Yonath, Ada E., 1939–, Israeli crystallographer, Ph.D. Weizmann Institute of Science, Rehovat, Israel, 1968. Yonath has been a researcher and professor at the Weizmann Institute since…

Resnais, Alain

(Encyclopedia) Resnais, AlainResnais, AlainälăNˈ rānāˈ [key], 1922–2014, French filmmaker. Although not an official member of the French cinema's New Wave movement, he shared its innovative and…

patent

(Encyclopedia) patent, in law, governmental grant of some privilege, property, or authority. Today patent refers to the granting to the inventor of a useful product or process the privilege to…