The human sense of touch is just amazing. Feeling the difference in height between two surfaces that are different by less than .004 inches/0.10mm. A mother can sense a temperature difference of only half a degree on her child's forehead.
The human sense of touch is just amazing. Feeling the difference in height between two surfaces that are different by less than .004 inches/0.10mm. A mother can sense a temperature difference of only half a degree on her child's forehead.
RE: DTube #5: You Can’t Touch Anything!