observational place
91Malmquist bias — For other uses of Malmquist, see Malmquist (disambiguation). The Malmquist bias refers to an effect in observational astronomy which leads to the preferential detection of intrinsically bright objects. It was first popularized in 1922 by Swedish… …
92Astronomy in medieval Islam — An 18th century Persian Astrolabe, kept at The Whipple Museum of the History of Science in Cambridge, England. Islamic astronomy or Arabic astronomy comprises the astronomical developments made in the Islamic world, particularly during the… …
93History of timekeeping devices — For thousands of years, devices have been used to measure and keep track of time. The current sexagesimal system of time measurement dates to approximately 2000 BC, in Sumer. The Ancient Egyptians divided the day into two 12 hour periods, and… …
94List of programs broadcast by Prime Television — The following are programs that are currently broadcast by Prime TelevisionCurrently broadcast on Prime TelevisionDomesticNews* Sunrise Weekdays 6:00am * Seven Morning News Weekdays 11:30am * Weekdays 4:30pm * Seven News Weekdays 6:00pm * Today… …
95medicine — /med euh sin/ or, esp. Brit., /med seuhn/, n., v., medicined, medicining. n. 1. any substance or substances used in treating disease or illness; medicament; remedy. 2. the art or science of restoring or preserving health or due physical condition …
96Objections to evolution — Part of a series on Evolutionary Biology …
97social structure — structure (def. 9). [1825 35] * * * Introduction in sociology, the distinctive, stable arrangement of institutions whereby human beings in a society interact and live together. Social structure is often treated together with the concept of… …
98solar system — the sun together with all the planets and other bodies that revolve around it. [1695 1705] * * * The Sun, its planets, and the small bodies (see asteroid, Centaur object, comet, Kuiper belt, meteorite, and Oort cloud) interplanetary dust and gas… …
99Neutrino — For other uses, see Neutrino (disambiguation). Neutrino/Antineutrino The first use of a hydrogen bubble chamber to detect neutrinos, on November 13, 1970. A neutrino hit a proton in a hydrogen atom. The collision occurred at the point where three …
100Big Bang nucleosynthesis — In physical cosmology, Big Bang nucleosynthesis (or primordial nucleosynthesis) refers to the production of nuclei other than those of H 1 (i.e. the normal, light isotope of hydrogen, whose nuclei consist of a single proton each) during the early …
