Tip and Ring Ground
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Tip and ring — are common terms in the telephone service industry referring to the two wires or sides of an ordinary telephone line. Tip is the ground side (positive) and Ring is the battery (negative) side of a phone circuit. The ground side is common with the … Wikipedia
Ground glass joint — Ground glass joints are used in laboratories to quickly and easily fit leak tight apparatus together from commonly available parts. For example, a round bottom flask, Liebig condenser, and oil bubbler with ground glass joints may be rapidly… … Wikipedia
E and M signaling — E M is a type of supervisory line signaling that uses separate leads, called the E lead and M lead, traditionally used in the North American telecommunications industry. There are different E M standards, with 8, 6, 4 and even 2 wires.Number of… … Wikipedia
Ring-tailed Lemur — Taxobox name = Ring tailed LemurMSW3 Groves|pages=117|id=12100056] status = NT trend = down status system = iucn3.1 status ref = regnum = Animalia phylum = Chordata classis = Mammalia ordo = Primates familia = Lemuridae genus = Lemur genus… … Wikipedia
Ground start — In telephony, a ground start or GST is a method of signaling from a terminal or subscriber local loop to a telephone exchange, in which method a cable pair is temporarily grounded to request dial tone. Most middle 20th century American payphones… … Wikipedia
Ground effect in aircraft — Aircraft may be affected by a number of ground effects, aerodynamic effects due to a flying body s proximity to the ground.One of the most important of these effects is the Wing In Ground effect, which refers to the reduction in drag experienced… … Wikipedia
Mathematics and Physical Sciences — ▪ 2003 Introduction Mathematics Mathematics in 2002 was marked by two discoveries in number theory. The first may have practical implications; the second satisfied a 150 year old curiosity. Computer scientist Manindra Agrawal of the… … Universalium
Business and Industry Review — ▪ 1999 Introduction Overview Annual Average Rates of Growth of Manufacturing Output, 1980 97, Table Pattern of Output, 1994 97, Table Index Numbers of Production, Employment, and Productivity in Manufacturing Industries, Table (For Annual… … Universalium
List of birds of Canada and the United States — A five year old Golden Eagle North American birds most closely resemble those of Eurasia, which was connected to the continent as part of the supercontinent Laurasia until around 60 million years ago.[1] Many groups occur throughout the northern… … Wikipedia
List of birds in Canada and the United States — This list of birds in Canada and the United States is a comprehensive listing of all the bird species known from the North American continent north of Mexico as of July 2008.North American birds most closely resemble those of Eurasia, which was… … Wikipedia
Black-and-white Hawk-eagle — Buteo melanoleucus and Spizaetus melanoleucus redirect here. These names are als junior homonyms of the Black chested Eagle buzzard ( Geranoaetus melanoleucus or Buteo fuscescens ). Taxobox name = Black and white Hawk eagle image width = 240px… … Wikipedia
