Convert light second to span
Selected category: length.
Definition and details for light second:
Light second is defined as the distance the light travels in one second through a vacuum. The defined light speed is c = 299,792,458 m/sec. So one light second equals exactly 299,792,458 meters.
Definition and details for span:
Span is a traditional unit of length equal to 9 inches or 22.86 mm. A span was defined as the length of the span of a man's hand with fingers stretched out as far as possible. The name comes from the old English word "spann".