light output - log-log paper
- line code station
- line communication
- line copy
- line cord
- line counter
- line crawl
- line distortion
- line distributor
- line divider
- line equalizer
- line feed
- line filter
- line finder
- line flicker
- line flyback
- line focusing
- line frequency
- line gauge
- line hole
- line insulator
- line integral
- line jack
- line level
- line linearity
- line loss
- line magnetic reconnection
- line measure
- line modulator
- line negative
- line of action
- line of centres
- line of correlation
- line of direction
- line of engagement
- line of force
- line of sight
- line of slide
- line of sphere
- line of striction
- line of weakness
