The source of photochemical smog is motor vehicle exhaust, NO and VOCs, reacting with sunlight. Effects of Acid Deposition. More commonly called acid rain, acid deposition alters chemistry in soil and âmobilizesâ toxic metal ions to the soil, harming soil organisms by hindering their nutrient uptake.
The human hair IS APRROX 0.004' (four thousands of an Inch and there are 12 inches to the foot)So therefore .004 divided by 12 is your answer.
So; 10 mil = 10 thousandths of an inch = 0.010 inches. On average human hair is 100 microns or .004 inches. 10 mil is the width of about 2 and a half human hairs. Source(s): http://wiki.answers.com/Q/How_thick_is_20_mil.