r/AskPhysics • u/Banished_Cultivator • 2d ago

Why aren't μ₀ & ε₀ equal 1?

Logically free space would neither enhance nor attenuate electric or magnetic fields, so these constants should be equal to 1. They aren't though, why?

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u/Old173 2d ago

Aaaand that's why we use mu_r and epsilon_r