Science Group
Question:
rituritz02
Student
Graduate School
How can I estimate how many hairs are there on any part of my body?
It may be one's private parts also.
Answers:
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krishna-agrawala Teacher
Graduate SchooleNotes Editor
Posted by krishna-agrawala on Tuesday November 3, 2009 at 12:11 AMOne very direct and tedious process of finding out number of hair on any part of a human body will be to count the number of hairs. This is of course a very tedious and impractical method. Unlike what many people believe, it may not even be 100% accurate, because the chances of making mistakes is great.
The process scientists and other professionals generally adopt is to first identify and mark out different area of the body with identical density of hair. For example, head has a very high density of hair, and areas like arms and legs have low density of hair. Areas such as palms and soles have no hair at all. Back of the hand has lower density than the arms.
Next step is to identify the part of body for which you want to estimate the number of hair. Then you measure out the area of this part. Also you mark out a small area, say of one square centimeter, in this part, and count the total number of hair in it. This will enable you to calculate hair density in terms such as number of hair per square centimeter. The estimate of total number hair can then be obtained by multiplying the hair density with the total area of the part.
Please not that, depending on the degree of accuracy desired by you, alternate methods of measuring the total area and for counting number of hair in a sample area may be used.
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eNotes Editor
Posted by brandih on Tuesday November 3, 2009 at 11:03 AMPlease see the link below for more information.
