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top,

toy with a tapering point on which it can be made to spin. Tops were known in antiquity and appeared in Europe during the Middle Ages; they are used today in many different regions of the world by both primitive and advanced societies. The principle of its motion is utilized in the gyroscopegyroscope
, symmetrical mass, usually a wheel, mounted so that it can spin about an axis in any direction. When spinning, the gyroscope has special properties. Many spinning objects exhibit some of these properties; the rotation of the earth about its axis gives it the
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.

top

[täp]
(geology)
(mechanics)
A rigid body, one point of which is held fixed in an inertial reference frame, and which usually has an axis of symmetry passing through this point; its motion is usually studied when it is spinning rapidly about the axis of symmetry.
(particle physics)
The new quantum number associated with the top quark. Also known as truth.
(quantum mechanics)

top

1. short for top gear
2. Cards the highest card of a suit in a player's hand
3. a platform around the head of a lower mast of a sailing vessel, the edges of which serve to extend the topmast shrouds
4. Chem the part of a volatile liquid mixture that distils first
5. the high-frequency content of an audio signal

TOP

TOP

(Technical Office Protocol) A communications protocol for office systems developed in the early 1980s by the Computer Services division of Boeing in Seattle, WA. It is often used in conjunction with MAP, the factory automation protocol developed by GM. TOP is used in the front office, and MAP is used on the factory floor. TOP uses the CSMA/CD access method (Ethernet), while MAP uses token bus.
References in periodicals archive ?
qn, which has featured in the Top Twenty for several months and is accompanied by eight new entries in the November chart identified as Trojans.
du ranked 9th in The Independent Top Twenty, a listing based on revenue collected from all sources, with a focus on the independent operators at the core of the business, excluding companies whose primary business is ownership and operation of a satellite fleet or terrestrial network.
Harris CapRock Communications, a global provider of fully managed communications for remote and harsh environments, was recently named the number one organization in an annual industry ranking of Independent Top Twenty satellite communications companies by the World Teleport Association (WTA).
The FatWire employees named in this year's Top Twenty Techies are Chunhe Dai, associate architect; Eric Gandt, lead systems engineer; and Vytas Suziedelis, systems specialist.
And which duet with Kylie Minogue gave him his first solo UK Top Twenty hit in 1995?
1 Let's Turkey Trot was a 1963 UK Top Twenty hit for which US female artist?
LONDON & LAS VEGAS -- Cyberview Technology, a leading provider of secure server-based downloadable systems to the gaming industry, has been honoured with three industry awards in the first-ever Top Twenty International Gaming Products competition.
2 Which British band had a 2002 UK Top Twenty album with Original Pirate Material?
The company supports both traditional and non-traditional life insurance and annuities across a myriad of markets and counts half of the top twenty insurers among its many clients.
1 Who had a 1982 UK Top Twenty hit with Fool If You Think It's Over?
This means that although the population is comparatively small, the country continues to rank among the top twenty largest markets for pharmaceutical products.
7 Which white reggae performer had 70s UK Top Twenty hits with Big Six, Big Seven and Big Eight?