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agranulocytosis

(Encyclopedia)agranulocytosis əgrănˌyəlōsītōˈsis [key], disease in which the production of granulated white blood cells by the bone marrow is impaired. Although the disease may occur spontaneously it is usu...

Cassiopeia, in astronomy

(Encyclopedia)Cassiopeia, in astronomy, prominent northern constellation located almost directly opposite the Big Dipper across the north celestial pole. Five bright stars in the constellation form a rough W (or M)...

Planck, Max

(Encyclopedia)Planck, Max mäks plängk [key], 1858–1947, German physicist. Seeking to explain the experimental spectrum (distribution of electromagnetic energy according to wavelength) of blackbody radiation, he...

acoustics

(Encyclopedia)acoustics əko͞oˈstĭks [key] [Gr.,=the facts about hearing], the science of sound, including its production, propagation, and effects. Various branches of acoustics that deal with different aspects...

dark matter

(Encyclopedia)dark matter, material that is believed to make up nearly 27% of the mass of the universe but is not readily visible because it neither emits nor reflects electromagnetic radiation, such as light or ra...

District of Columbia, University of the

(Encyclopedia)District of Columbia, University of the, at Washington, D.C.; coeducational; land-grant and federally supported; est. 1976 with the merger of three existing colleges; predominantly African American. I...

Cushing, William Barker

(Encyclopedia)Cushing, William Barker, 1842–74, Union naval hero in the Civil War, b. Delafield, Wis., educated at Annapolis. Cushing became noted for a series of daredevil exploits, particularly for his sinking ...

Fisk University

(Encyclopedia)Fisk University, at Nashville, Tenn.; coeducational; founded 1865, opened 1866, and chartered 1867. It became a university in 1967. Fisk, long an outstanding African-American school, is open to all qu...

Amersfoort

(Encyclopedia)Amersfoort äˈmərsfōrt [key], city, Utrecht prov., central Netherlands. It is a transportation and manufacturing center. Points of interest include a 14th-century water...

Wynants, Jan

(Encyclopedia)Wynants or Wijnants, Jan both: yän vīˈnänts [key], c.1625–84, Dutch landscape painter. A follower of Ruisdael, he worked chiefly in Haarlem. The little figures in his paintings are the work of o...