| Subject | English | Italian |
| comp., MS | physical layer | livello fisico (Layer one of the OSI model. A software layer that transmits bits from one computer to another and regulates the transmission of a stream of bits over a physical medium. This layer defines how the cable is attached to the network and which transmission technique is used to send data over the cable) |
| commun., comp. | physical layer | livello fisico |
| commun., comp. | physical layer | strato fisico |
| el. | physical thickness of scattering layer | spessore fisico di uno strato di diffusione |
| IT | set of data link and physical layers | serie di strati fisici e di trasmissione dati |