The approximate atomic radius of gold is 0.1441 nanometers or 0.1441 x 10-9 meters (i.e. 0.1441 millionth of a milimeter!)
Answered by: Paul Turek, PE
'There is no inductive method which could lead to the fundamental concepts of physics. Failure to understand this fact constituted the basic philosophical error of so many investigators of the nineteenth century.'