inverted population
31Optics — For the book by Sir Isaac Newton, see Opticks. Optical redirects here. For the musical artist, see Optical (artist). Optics includes study of dispersion of light. Optics is the branch of …
32Social history — For a medical patient s social history as recorded by a hospital admission note, see Social history (medicine). Social history, often called the new social history, is a branch of History that includes history of ordinary people and their… …
33Portable water purification — devices – also known as point of use (POU) water treatment systems and field water disinfection techniques – are self contained units that can be used by recreational enthusiasts, military personnel, survivalists, and others who must… …
34Detective fiction — Detective story redirects here. For other uses, see Detective Story. Detective fiction is a sub genre of crime fiction and mystery fiction in which an investigator (often a detective), either professional or amateur, investigates a crime, often… …
35Astrophysics Data System — Logo of the ADS The Astrophysics Data System (usually referred to as ADS), developed by the National Aeronautics and Space Administration (NASA), is an online database of over eight million astronomy and physics papers from both peer reviewed and …
36Narcissism — Narcissus by Caravaggio (Galleria Nazionale d Arte Antica, Rome) Narcissism is a term with a wide range of meanings, depending on whether it is used to describe a central concept of psychoanalytic theory, a mental illness, a social or cultural… …
37Icelandic grammar — is a body of rules specifying how meanings are created in Icelandic. Icelandic is an inflected language with four cases: nominative, accusative, dative and genitive. Icelandic nouns can have one of three grammatical genders, masculine, feminine… …
38Lacandonia — Taxobox regnum =Plantae divisio = Magnoliophyta classis = Liliopsida ordo = Pandanales familia = Triuridaceae genus = Lacandonia genus authority = E.Martínez Ramos species = L. schismatica binomial = Lacandonia schismatica binomial authority =… …
39analysis — /euh nal euh sis/, n., pl. analyses / seez /. 1. the separating of any material or abstract entity into its constituent elements (opposed to synthesis). 2. this process as a method of studying the nature of something or of determining its… …
40N170 — The N170 is a component of the event related potential that reflects the neural processing of faces. When potentials evoked by images of faces are compared to those elicited by other visual stimuli, the former show increased negativity 130 200 ms …
