GENERAL SENSORY THRESHOLDS

1
GENERAL SENSORY THRESHOLDS
The following are BASIC thresholds for the
indicated human sensory systems. Exact
thresholds will vary for individuals.
2
VISION

• A candle flame seen from a distance of 30 miles
  on a clear dark night.

3
HEARING

• The ticking of a watch under quiet conditions
  from a distance of 20 feet.

4
TASTE

• 1 teaspoon of sugar dissolved in 2 gallons of
  water

5
SMELL

• 1 drop of perfume in a three-room apartment

6
TOUCH

• The wing of a bee dropped on your cheek from a
  height of one centimeter
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