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3. Time unit for studying the speed of light: Abbr

Alternative clues for the word psec

• Time it takes light to travel .3 mm: Abbr
• Infinitesimal fraction of a min
• Tiny fraction of a min.
• Infinitesimal division of a min
• Time it takes for light to travel .3 mm
• Minute segment of a min
• Teeny fraction of a min
• One 60-trillionth of a min.
• Teeny-tiny time unit (abbr.)