History of 1e-4 m

	Revision 3 . . November 28, 2001 2:13 am by Eob [Dust mite. Move human hair down to lower bucket.]
	Revision 2 . . (edit) November 27, 2001 6:06 am by Eob
	Revision 1 . . November 27, 2001 5:59 am by Eob [width of human hair]

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Difference (from prior major revision) (no other diffs)

Changed: 4c4

* 100 μm -- width of human hair[1]

* 125 μm -- Dust mite[&http://www.ristenbatt.com/filt_eff.htm]