daily variation
41HIV test — Randall L. Tobias, former U.S. Global AIDS Coordinator, being publicly tested for HIV in Ethiopia in an effort to reduce the stigma of being tested.[1] HIV tests are used to detect the presence of the human immunodeficiency virus (HIV), the virus …
42Pie chart — of populations of English native speakers A pie chart (or a circle graph) is a circular chart divided into sectors, illustrating proportion. In a pie chart, the arc length of each sector (and consequently its central angle and area), is… …
43Balfour Stewart — Infobox Scientist name = Balfour Stewart box width = image width = 150px caption = Balfour Stewart birth date = November 1, 1828 birth place = Edinburgh, Scotland death date = December 19, 1887 death place = Ballymagarvey, Balrath, County Meath,… …
44Colonization of Mercury — Mercury Mercury has been suggested as one possible target for space colonization of the inner Solar System, along with Mars, Venus, the Moon and the asteroid belt. Permanent colonies would almost certainly be restricted to the polar regions due… …
45Stewart, Balfour — ▪ British meteorologist and geophysicist born Nov. 1, 1828, Edinburgh died Dec. 19, 1887, Drogheda, Ire. Scottish meteorologist and geophysicist noted for his studies of terrestrial magnetism and radiant heat. Stewart pursued a… …
46SDV — abbr. Solar Daily Variation …
47rhythm — [rith′əm] n. [< Fr or L: Fr rythme < L rhythmus < Gr rhythmos, measure, measured motion < base of rheein, to flow: see STREAM] 1. a) flow, movement, procedure, etc. characterized by basically regular recurrence of elements or features …
48arts, East Asian — Introduction music and visual and performing arts of China, Korea, and Japan. The literatures of these countries are covered in the articles Chinese literature, Korean literature, and Japanese literature. Some studies of East Asia… …
49Life Sciences — ▪ 2009 Introduction Zoology In 2008 several zoological studies provided new insights into how species life history traits (such as the timing of reproduction or the length of life of adult individuals) are derived in part as responses to… …
50MUSIC — This article is arranged according to the following outline: introduction written sources of direct and circumstantial evidence the material relics and iconography notated sources oral tradition archives and important collections of jewish music… …
