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813 furlongs is about 1,500,000,000 times as tall as a Human hair, Strand of.
In other words, the height of a Human hair, Strand of is 0.000000000590 times that amount.
(average)
A strand of human hair averages 99 ┬Ám (micrometers), with blond hair being the finest and black hair the thickest. On a healthy scalp, each strand of hair will last up to 6 years.
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