speckling

Graininess that appears in a degraded optical signal caused when perfectly coherent light

waves travel slightly different physical paths, or modes, and interfere with each other. See also coherence.

• photonic cross-connect (PXC)
• photonics
• photophone
• PHS (Personal Handyphone System)
• PHY (PHYsical Layer)
• physical
• Physical Layer (PHY)
• Physical Medium (PM)
• physical reach
• physical topology
• Physical Unit (PU)
• physics
• picker
• picocell
• piconet
• PID (Pager Identification Number)
• piezoelectric effect
• ping
• PIN (Positive Intrinsic Negative)
• PIN (Positive Intrinsic Negative)
• PIN (Positive Intrinsic Negative)
• pipe
• PISN (Private Integrated Services Network)
• PISO (parallel-in, serial-out)
• pixel ( pics element)