Crossword Clue:

Approx time it takes for light to travel one foot

AnswerCrossword Clue
NSECApprox. time it takes for light to travel one foot
NSECRoughly, time it takes for light to travel one ft.
PSECTime it takes for light to travel .3 mm
PSECTime it takes light to travel .3 mm: Abbr.
MSECHow long it takes light to travel 186 mi.
NSECAbout how long it takes light to travel a ft.