narrow beam

narrow beam

[¦nar·ō ′bēm]
(physics)
In measurements of the attenuation of a beam of ionizing radiation, a beam in which the scattered radiation does not reach the detector.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
References in periodicals archive ?
We plan to test one of the technologies before the end of the year a narrow beam," he said.
His wife meanwhile, who is played by Neve Campbell, has some crazy stunts of her own to pull off, walking across a narrow beam above a raging inferno, while carrying her son on her back.
Coupled with a TIR optic, the narrow beam is capable of illuminating at a throw distance of up to one kilometre.
A narrow beam can deliver a steady 2W of power to 15 square-inch area from a distance of up to 4.3 meters, or about 14 feet.
A narrow beam lens has been used to highlight specific objects such as the lotus on the Jaipur Column and a wider beam lens to spread light on a larger area.
To consider the influence of antenna beam widths on the range of mode orthogonality, simulated SNRs for narrow beam width antennas (HPBW 10[degrees]) are given in Figure 8.
The displacement of these narrow beam vessels, resulting from the upsizing of services through the canal, has driven a change in deployment patterns in this sector and also contributed to a record level of containership demolition.
To detect smoke, the transmitter emits a narrow beam of infra-red (IR) light to the receiver head.
Micropilot NMR81 utilises 79 GHz technology to generate a narrow beam angle of 3-deg or 4-deg.