# Homework Help: A question on constants and dimensionless equations

1. Aug 18, 2012

1. The problem statement, all variables and given/known data

There is not really a problem, just a question which i am about to ask. The known data is

$$\alpha$$ the fine structure constant
$$\hbar$$ Plancks constant
$$c$$ the speed of light
$$\mu$$ permeability

2. Relevant equations

$$2\alpha \hbar = \pi^2 \mu_0 c$$

3. The attempt at a solution

$$2\alpha \hbar = \pi^2 \mu_0 c$$