periodically
41Harold Pinter — Infobox Writer name = Harold Pinter imagesize = 180px caption = birthdate = birth date and age|df=yes|1930|10|10 birthplace = Hackney, London, England United Kingdom nationality = British spouse = Antonia Fraser (1980 – present) Vivien Merchant… …
42Inertial electrostatic confinement — (often abbreviated as IEC) is a concept for retaining a plasma using an electrostatic field. The field accelerates charged particles (either ions or electrons) radially inward, usually in a spherical but sometimes in a cylindrical geometry. Ions… …
43Video camera tube — In older video cameras, before the mid to late 1980s, a video camera tube or pickup tube was used instead of a charge coupled device (CCD) for converting an optical image into an electrical signal. Several types were in use from the 1930s to the… …
44Geology of the Grand Teton area — The geology of the Grand Teton area consists of some of the oldest rocks and one of the youngest mountain ranges in North America. The Teton Range, mostly located in Grand Teton National Park, started to grow some 9 million years ago. An older… …
45Bond duration — Financial markets Public market Exchange Securities Bond market Fixed income Corporate bond Government bond Municipal bond …
46Compartmental models in epidemiology — In order to model the progress of an epidemic in a large population, comprising many different individuals in various fields, the population diversity must be reduced to a few key characteristics which are relevant to the infection under… …
47Comb filter — In signal processing, a comb filter adds a delayed version of a signal to itself, causing constructive and destructive interference. The frequency response of a comb filter consists of a series of regularly spaced spikes, giving the appearance of …
48Potassium titanyl phosphate — (KTiOPO4) or KTP is a nonlinear optical material which is commonly used for frequency doubling diode pumped solid state lasers such as and other neodymium doped lasers. The material has a relatively high optical damage threshold ( 15 J/cm²), a… …
49United States v. Libby — United States of America v. I. Lewis Libby, also known as Scooter Libby (USA v. LIBBY, Case No. 1:2005 cr 00394 RBW) is the federal trial of former high ranking George W. Bush administration official I. Lewis Scooter Libby. Libby served as… …
50List of games from Whose Line Is It Anyway? — The below list describes games featured on the British and/or American versions of the television show Whose Line Is It Anyway? . The games are categorized based on their primary defining aspect, though some might fit into other categories as… …
