| Standardization field | Electrical engineering
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| Technical committee | BAS/TC 30- Electric cables |
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| Term (EN) | paraxial ray |
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| Definition (EN) | A light ray that is close to and nearly parallel with the fibre axis.
Note — For purposes of computation, the angle, B, between the ray and the optical axis is small enough for sin B or tan B to be replaced by B (radians). |
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| Term (FR) | |
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| Definition (FR) | |
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| Term (DE) | |
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| Definition (DE) | |
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| Term (BS) | |
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| Definition (BS) | |
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| Term (HR) | |
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| Definition (HR) | |
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| Term (SR) | paraksijalni zrak |
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| Definition (SR) | Svjetlosni zrak koji je u neposrednoj blizini i gotovo je paralelan sa osom vlakna.
Napomena — Za potrebe računanja, ugao B, između zraka i optičke ose dovoljno je mali da sinB ili tanB budu zamijenjeni sa B (radijani). |
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| Date | 2017-08-09 |
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| Standards | BAS IEC 60050-731:2017 |
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