Math Fun Library 


Question : 
How are the smallest measurements expressed ? 
Answer : 
There are two units in the measure of all small distances, the
Micron(m) and the Angstrom unit (Å.u.).

A Micron is the millionth of a metre and there are about 25000
microns in an inch. One Angstrom unit equals one ten thousand
millionth of a metre. One Micron equals 10,000 times the length
of an Angstrom unit. 
Breadth of a hair = 75b
Diameter of red blood corpuscle = 2m
Diameter of spherical bacterium = 0.5m
Diameter of molecule of water = 0.00205m or 2.5 A.m.
