Pencil (optics)
id:
pencil-optics-250-13034968
title:
Pencil (optics)
text:
In optics, a pencil or pencil of rays is a geometric construct used to describe a beam or portion of a beam of electromagnetic radiation or charged particles, typically in the form of a narrow beam. Antennas which strongly bundle in azimuth and elevation are often described as "pencil-beam" antennas. For example, a phased array antenna can send out a beam that is extremely thin. Such antennas are used for tracking radar, and the process is known as beamforming. In optics, the focusing action of
brand slug:
wiki
category slug:
encyclopedia
description:
Narrow beam of electromagnetic radiation or charged particles
original url:
https://en.wikipedia.org/wiki/Pencil_(optics)
date created:
date modified:
2023-08-14T08:16:44Z
main entity:
{"identifier":"Q2068617","url":"https://www.wikidata.org/entity/Q2068617"}
image:
{"content_url":"https://upload.wikimedia.org/wikipedia/commons/1/11/3d-radarp.jpg","width":900,"height":500}
fields total:
13
integrity:
15