| Standardization field | Electrical engineering | 
|---|
| Technical committee | BAS/TC 30- Electric cables | 
|---|
| Term (EN) | optic axis | 
|---|
| Definition (EN) | In an anisotropie medium, a direction of propagation in which the two waves having orthogonal polarizations have the same phase velocity.
Note. — In English the term "optic axis" should be distinguished from optical axis. | 
|---|
| Term (FR) |  | 
|---|
| Definition (FR) |  | 
|---|
| Term (DE) |  | 
|---|
| Definition (DE) |  | 
|---|
| Term (BS) |  | 
|---|
| Definition (BS) |  | 
|---|
| Term (HR) |  | 
|---|
| Definition (HR) |  | 
|---|
| Term (SR) | optička os | 
|---|
| Definition (SR) | U anizotropnom medijumu, pravac prostiranja gdje dva talasa koji imaju ortogonalne polarizacije imaju istu faznu brzinu. 
Napomena — U engleskom jeziku termin „optička os“ treba razlikovati od termina optička osa. | 
|---|
| Date | 2017-08-09 | 
|---|
| Standards | BAS IEC 60050-731:2017 | 
|---|