If your senses are working normally, you can: - Feel on your
fingertips or face a pressure that depresses your skin a bare
.00004 inch. - See a small candle flame from 30 miles away on a
clear, dark night. - Smell one drop of perfume diffused through
a three-room apartment. - Taste .04 ounce of table salt
dissolved in 530 quarts of water. - Feel the weight of a bees
wing falling on your cheek from less than half an inch away. -
Distinguish among more than 300,000 different color variations.
- Gauge the direction of a sounds origin based on a
.00003-second difference in its arrival from one ear to the
other.