The overall length of the path followed by a light ray or sound wave.
Example sentencesExamples
- A wave refers to an optical path length that may not equal a physical distance in the optics.
- Therefore it follows that the path length corresponding to the coherence time is called the coherence length.
- Without amplification, a single photon traveling a marathon path length doesn't make a difference.
- The path length for the laser flash between the quartz window and the fiber was 0.5 mm.
- Average path length is 3.1 for the actual networks and 6.6 for the random networks.