1 E-6 m

• Distances shorter than 1 µm
• 1 µm is equal to:
  • the side of square of area 10^-12 m²[?]
  • edge of cube of volume 10^-18 m³[?]
• 1.55 µm -- Wavelength of light used in optical fibre
• 6 µm -- anthrax spore
• 6-8 µm -- diameter of a human red blood cell
• 7 µm -- diameter of the nucleus of typical eukariotic cell
• 7 µm -- width of strand of spider web [1] (http://www.carnicom.com/micro2.htm)
• 1-10 µm -- diameter of typical bacterium
• Distances longer than 10 µm

External link Conversion Calculator for Units of LENGTH (http://www.ex.ac.uk/cimt/dictunit/ccleng.htm)