height-frequency characteristic
101Proximity fuze — A proximity fuze (also called a VT fuze, for variable time ) is a fuze that is designed to detonate an explosive device automatically when the distance to target becomes smaller than a predetermined value or when the target passes through a given …
102Attention-deficit hyperactivity disorder controversies — Methylphenidate (Ritalin) 10mg Pill (Ciba/Novartis), a drug commonly prescribed to treat ADHD The causes, diagnosis, and the treatment of attention deficit hyperactivity disorder (ADHD) have been the subject of active debate at least since the… …
103building construction — Techniques and industry involved in the assembly and erection of structures. Early humans built primarily for shelter, using simple methods. Building materials came from the land, and fabrication was dictated by the limits of the materials and… …
104Hydraulic jump — A hydraulic jump is a phenomenon in the science of hydraulics which is frequently observed in open channel flow such as rivers and spillways. When liquid at high velocity discharges into a zone of lower velocity, a rather abrupt rise (a step or… …
105Cauchy distribution — Not to be confused with Lorenz curve. Cauchy–Lorentz Probability density function The purple curve is the standard Cauchy distribution Cumulative distribution function …
106Bicycle and motorcycle dynamics — A computer generated, simplified model of bike and rider demonstrating an uncontrolled right turn. An …
107gravitation — gravitational, adj. gravitationally, adv. /grav i tay sheuhn/, n. 1. Physics. a. the force of attraction between any two masses. Cf. law of gravitation. b. an act or process caused by this force. 2. a sinking or falling …
108Iran, ancient — Introduction also known as Persia historic region of southwestern Asia that is only roughly coterminous with modern Iran. The term Persia was used for centuries, chiefly in the West, to designate those regions where Persian language and… …
109keyboard instrument — ▪ music Introduction any musical instrument on which different notes can be sounded by pressing a series of keys, push buttons, or parallel levers. In nearly all cases in Western music the keys correspond to consecutive notes in the… …
110CN Tower — This article is about the CN Tower in Toronto. For the tower in Edmonton, see CN Tower (Edmonton). CN Tower CN Tower is the world s 5th tallest free standing structure.[1] …
