radiant

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radiant:

see meteor showermeteor shower,
increase in the number of meteors observed in a particular part of the sky. The trails of the meteors of a meteor shower all appear to be traceable back to a single point in the sky, known as the radiant point, or radiant.
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radiant

(ray -dee-ănt) The point on the celestial sphere, usually given in the coordinates right ascension and declination, from which a meteor appears to originate. Shower meteors all seem to radiate from this point and the trains of a series of shower meteors, extrapolated backwards, intercept at the radiant. Its position is found by calculating the intercept with the celestial sphere of the vector sum of the meteor's velocity vector and the Earth's velocity vector on collision. The radiant position changes slightly with time as the Earth moves through the meteoroid stream. Meteor showers are usually named after the constellation that contains the radiant.

Radiant

 

the point on the celestial sphere that appears to be the source of the meteors observed when the earth encounters a swarm of meteoroids moving around the sun in a common orbit. Meteoroids belonging to the same swarm have almost exactly parallel trajectories in space. Consequently, if the paths of the meteors in the corresponding meteor shower are extended backward to the celestial sphere, they intersect in a small area of the sky because of the effects of perspective. The center of this area is the radiant.

radiant

[′rād·ē·ənt]
(astronomy)
A point on the celestial sphere through which pass the backward extensions of the trail of a meteor as observed at various locations, or the backward extensions of trails of a number of meteors traveling parallel to each other.
A point on the celestial sphere toward which the stars in a moving cluster appear to travel.
(physics)
Pertaining to motion of particles or radiation along radii from a common point or a small region.
A point, region, substance, or entity from which particles or radiations are emitted.

radiant

1. emitted or propagated by or as radiation; radiated
2. Physics (of a physical quantity in photometry) evaluated by absolute energy measurements
3. a point or object that emits radiation, esp the part of a heater that gives out heat
4. Astronomy the point in space from which a meteor shower appears to emanate
References in periodicals archive ?
Restaurant and retail operators are applying more sophisticated software applications, multimedia and a variety of supporting devices in their ongoing efforts to enhance customer service levels and grow revenue," said Carlyle Taylor, president of computer products at Radiant Systems.
The Radiant solution also includes reliable P1220 terminals with C500 graphical customer displays as a means to increase order accuracy, improve speed-of-service and maximize customer service while up-selling with streaming video for advertisements and promotions.
The Radiant solution will benefit Abuelo's by improving their ability to deliver a very positive and consistent guest experience at every restaurant even as they continue to expand the number of locations," said Paul Langenbahn, vice president of channel sales and operations for the Radiant Hospitality Division.
The Radiant Convenience Store Point of Sale is the latest software application in the Radiant product line to achieve PABP validation under Visa's CISP program.
Radiant Systems supports Ninety Nine's growth strategy by increasing operational efficiencies through the implementation of the Aloha solution and Radiant hardware," said Paul Langenbahn, vice president of channel sales and operations for the Radiant Hospitality Division.
Radiant's newest advancement in POS terminals, the P1220, offers numerous features that benefit restaurant and retail operators," said Bob Stone, Director of Product Management in the Radiant Hardware Division.
Our vision is to standardize our global operation with the Radiant solution, enabling operators to focus on customers and profits--not think about technology.
After an extensive evaluation process, we chose Radiant for its ability to provide everything we need - right when we need it.
The Radiant Systems K600 kiosk is environmentally designed to withstand challenges of outdoor usage as well as high transaction volume, continuous operation and contaminants such as dirt and grease.
ATLANTA -- BURGER KING(R) restaurant solution includes Aloha and MenuLink software running on Radiant hardware
Jeff Goldstein, Synchronics' President and Founder, will run the Radiant Retail Division which will be headquartered in Memphis, Tennessee.