Convert barleycorn to petameter
Selected category: length.
Definition and details for barleycorn:
Barleycorn is an old English unit of distance equal to 1/3 inch or about 8.47 millimeters. In farming societies was very common to use seeds as units of length. Barley was a basic crop in England. So barleycorn was a useful unit.
Definition and details for petameter:
Petameter (Pm) is a metric unit of distance equal to 1015 meters. The distance from our sun to the nearest star is about 40 petameters.