gradation control
71race — race1 /rays/, n., v., raced, racing. n. 1. a contest of speed, as in running, riding, driving, or sailing. 2. races, a series of races, usually of horses or dogs, run at a set time over a regular course: They spent a day at the races. 3. any… …
72Race — /rays/, n. Cape, a cape at the SE extremity of Newfoundland. * * * I Term once commonly used in physical anthropology to denote a division of humankind possessing traits that are transmissible by descent and sufficient to characterize it as a… …
73science, history of — Introduction the history of science from its beginnings in prehistoric times to the 20th century. On the simplest level, science is knowledge of the world of nature. There are many regularities in nature that mankind has had to… …
74line — Synonyms and related words: DMZ, Indian file, L, MO, Spenserian stanza, WATS, WATS line, Zeitgeist, abut, accommodation, accompaniment, accord, accordance, aceldama, acknowledgment, acquiescence, acquire, action, activity, adaptation, adaption,… …
75THE MIDDLE AGES — …
76Family name — Last name redirects here. For the song, see Last Name. Family name Frankenstein, an example of compound German family names which were typical for Jews (New Jewish Cemetery, Prague) A family name (in Western contexts often referred to as a last… …
77Leonardo da Vinci — Da Vinci redirects here. For other uses, see Da Vinci (disambiguation). Leonardo da Vinci Self portrait …
78Scandinavia — This article is about Scandinavia as a cultural, historical and ethno linguistic region. For the peninsula, see Scandinavian Peninsula. For the broader group of Nordic countries, see Nordic countries. For other uses, see Scandinavia… …
79Fayum mummy portraits — Mummy portraits or Fayum mummy portraits (also Faiyum mummy portraits) is the modern term for a type of realistic painted portraits on wooden boards attached to mummies from Roman Egypt. They belong to the tradition of panel painting, one of the… …
80F-number — In optics, the f number (sometimes called focal ratio, f ratio, or relative aperture [Smith, Warren Modern Lens Design 2005 McGraw Hill] ) of an optical system expresses the diameter of the entrance pupil in terms of the focal length of the lens; …
