New posts in Physical Constants

How do scientists know the min limit of temperature is -273 degree celsius?

Why is the Planck constant an exact number with defined value?

Comparing the strength of gravity and electricity

Why is the Planck length considered fundamental, but not the Planck mass?

How to prove that both $\mu_0$ and $\epsilon_0$ don't depend on any frame of references?

Is the Bohr radius deprecated?

How can vacuum have a permittivity?

Is my friend right about omitting $c^2$ in world famous tiny equation?

Why was the Planck constant $h$ fixed to be exactly $6.62607015\times10^{−34}\text{Js}$ and not some other value?

Why does the fine-structure constant $α$ have the value it does?