Green Cove Springs is a city in Clay County, Florida, United States. The population was 5,378 at the 2000 census. As of 2010, the population recorded by the U.S. Census Bureau is 6,908. It is the county seat of Clay County. The city is named after the portion of the St. Johns River upon which the city is built.
As n becomes very small, `(1+n)^(1/n)` approaches the value of e. We can obtain reasonable accuracy with a very small value of n. `e~~[(1+n)^(1/n)]_(n=0.000000001)=2.718281827`. The graph of `y=(1+n)^(1/n)` is as follows: e = 2.71828... Graph of `(1+n)^(1/n)`.
If eo represents the permittivity of free space (that is, 8.85 x 10-12 F/m) and e represents the permittivity of the substance in question (also specified in farads per meter), then the relative permittivity, also called the dielectric constant er, is given by: