The frequency comb is generated by a laser that produces a series of veryshort, equallyspaced pulses of light (like the teeth of a comb) across a broadspectrum of frequencies.
A popular form of polyphasic sleep, the Uberman sleep schedule, suggests that you sleep 20-30 minutes six times per day, with equallyspaced naps every 4 hours around the clock.
Results of computer simulation for a 10-element equallyspaced line array showed that these algorithms were effective, and can be applied to arbitrary array.