| Standardization field | Electrical engineering | 
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| Technical committee | BAS/TC 30- Electric cables | 
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| Term (EN) | maximum theoretical numerical aperture | 
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| Definition (EN) | A theoretical value of numerical aperture calculated using the values of refractive index of the core and cladding given by :
NAmax th = n_1^2 -n_2^2)1/2
where n1 is the maximum refractive index of the core, and n2 is the refractive index of the innermost homogeneous cladding. | 
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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) | maksimalni teoretski numerički otvor | 
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| Definition (SR) | Teoretska vrijednost numeričkog otvora koja se izračunava na osnovu vrijednosti indeksa prelamanja jezgre i omotača datih sa:
NAmax th = n_1^2 -n_2^2)1/2
gdje je n1 maksimalni indeks prelamanja jezgre, a n2 indeks prelamanja najdubljeg homogenog omotača. | 
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| Date | 2017-08-09 | 
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| Standards | BAS IEC 60050-731:2017 | 
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