Dictionary » S » Sector

Sector

sector

1. (Science: geometry) A part of a circle comprehended between two radii and the included arc.

2. A mathematical instrument, consisting of two rulers connected at one end by a joint, each arm marked with several scales, as of equal parts, chords, sines, tangents, etc, one scale of each kind on each arm, and all on lines radiating from the common center of motion. The sector is used for plotting, etc, to any scale.

3. An astronomical instrument, the limb of which embraces a small portion only of a circle, used for measuring differences of declination too great for the compass of a micrometer. When it is used for measuring zenith distances of stars, it is called a zenith sector. Dip sector, an instrument used for measuring the dip of the horizon. Sector of a sphere, or spherical sector, the solid generated by the revolution of the sector of a circle about one of its radii, or, more rarely, about any straight line drawn in the plane of the sector through its vertex.

Origin: L, properly, a cutter, fr. Secare, sectum, to cut: cf. F. Secteur. See Section.


Please contribute to this project, if you have more information about this term feel free to edit this page



Results from our forum


Ten interview rules

... straight into your current probable delight for the job. 2.Search Sharpened Decide on what you should don on the appointment. According to the sector along with the situation, emerge your very best self appointment outfits along with check out these people around pertaining to locations along ...

See entire post
by shawpon
Fri Jun 01, 2012 9:34 am
 
Forum: General Discussion
Topic: Ten interview rules
Replies: 0
Views: 1328

Re: Theories - Origin of Life

... pairs that make up human DNA, store this information in databases, improve tools for data analysis, transfer related technologies to the private sector, and address the ethical, legal, and social issues (ELSI) that may arise from the project. http://www.ornl.gov/sci/techresources/Human_Genome/project/about.shtml ...

See entire post
by scottie
Wed Feb 22, 2012 8:12 pm
 
Forum: Evolution
Topic: Theories - Origin of Life
Replies: 559
Views: 765698

Difference between T-Cell and Phagocyte?

... the immune system attacks a foreign organism. However, lymphocytes can become phagocytes thats why i didnt say that they were part of a certain sector of the immune system.

See entire post
by santana8
Wed Aug 24, 2011 1:20 pm
 
Forum: Physiology
Topic: Difference between T-Cell and Phagocyte?
Replies: 10
Views: 47103

Re: Help with Immunology

... popularity among the new generation of students in this age of specification. Moreover, the development of the health, nutrition and hospital sector has largely been responsible for the growth in interest.

See entire post
by jenica56
Wed Aug 03, 2011 1:36 pm
 
Forum: Physiology
Topic: Help with Immunology
Replies: 3
Views: 5874

A Direction in College

... in the field. And http://www.onlinebiologydegree.com/ can get you a head start into taking some courses online and seeing what particular sector you're interested in focusing on.

See entire post
by harrison425
Fri Mar 11, 2011 11:34 pm
 
Forum: Human Biology
Topic: A Direction in College
Replies: 2
Views: 1472
View all matching forum results

This page was last modified 21:16, 3 October 2005. This page has been accessed 1,639 times. 
What links here | Related changes | Permanent link