10-to-minus04

On average, the human head has about 100,000 strands of hair (10-to-plus05). How wide is each one?

We can consider the power 10-04 from various perspectives.  This power is:

  • The width of a single human hair (100 micrometers or 10-04 meters)
  • The energy of a cricket’s chirp (9 x 10-04 Joules)
  • The amount of caffeine in your average cup of coffee (1.5 x 10-04 kg)
  • The speed of Jakobshavn Isbræ, one of the fastest moving glaciers from 1997-2003 (8.9 x 10-04 mph), and
  • The diameter of Thiomargarita namibiensis, the widest known bacterium (10-04 meters)
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