<math>a_0 = {{4\pi\epsilon_0\hbar^2}\over{m_e e^2}}</math>
where:
It has a value of 5.29189379×10-11 m, or about half an angstrom.
... is $80,748. Males have a median income of $41,917 versus $46,313 for females. The per capita income for the town is $28,614. 7.9% of the population and 4.9% of families ...