Difference between revisions of "Concentric"
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==Etymology== | ==Etymology== | ||
[https://nordan.daynal.org/wiki/index.php?title=English#ca._1100-1500_.09THE_MIDDLE_ENGLISH_PERIOD Middle English] consentrik, from Medieval Latin concentricus, from [[Latin]] com- + centrum [[center]] | [https://nordan.daynal.org/wiki/index.php?title=English#ca._1100-1500_.09THE_MIDDLE_ENGLISH_PERIOD Middle English] consentrik, from Medieval Latin concentricus, from [[Latin]] com- + centrum [[center]] | ||
| − | *Date: [ | + | *Date: [https://www.wikipedia.org/wiki/14th_Century 14th century] |
==Definitions== | ==Definitions== | ||
*1 : having a common [[center]] <concentric circles> | *1 : having a common [[center]] <concentric circles> | ||
| Line 10: | Line 10: | ||
'''Concentric''' objects [[share]] the same [[center]], [[axis]] or [[origin]] with one inside the other. [[Circles]], tubes, cylindrical shafts, disks, and [[spheres]] may be concentric to one another. Concentric objects do not [[necessarily]] have the same [[radius]]. | '''Concentric''' objects [[share]] the same [[center]], [[axis]] or [[origin]] with one inside the other. [[Circles]], tubes, cylindrical shafts, disks, and [[spheres]] may be concentric to one another. Concentric objects do not [[necessarily]] have the same [[radius]]. | ||
==Examples of concentric phenomena== | ==Examples of concentric phenomena== | ||
| − | Concentric cable is a cable type used in [ | + | Concentric cable is a cable type used in [https://en.wikipedia.org/wiki/TN-C-S TN-C-S] [https://en.wikipedia.org/wiki/Ground_(power)#earthing_systems earthing systems] where the combined neutral and [[earth]] core completely surrounds the live core(s). This minimizes the risk of completely cutting through the combined neutral and [[earth]] without first completely cutting through the live cores. |
| − | [ | + | [https://en.wikipedia.org/wiki/Muscle_contraction#Concentric_contraction Concentric muscles contractions] are those in which the muscle shortens. |
[[Category: General Reference]] | [[Category: General Reference]] | ||
Latest revision as of 23:45, 12 December 2020
Etymology
Middle English consentrik, from Medieval Latin concentricus, from Latin com- + centrum center
- Date: 14th century
Definitions
Description
Concentric objects share the same center, axis or origin with one inside the other. Circles, tubes, cylindrical shafts, disks, and spheres may be concentric to one another. Concentric objects do not necessarily have the same radius.
Examples of concentric phenomena
Concentric cable is a cable type used in TN-C-S earthing systems where the combined neutral and earth core completely surrounds the live core(s). This minimizes the risk of completely cutting through the combined neutral and earth without first completely cutting through the live cores.
Concentric muscles contractions are those in which the muscle shortens.
