Meaning of words

[garytse86]

Permeability and permittivity of free space, any meaning at all?

[MiGUi]

Yes, they are two constants that exist due to our aleatory chosen units.

[garytse86]

what does "aleatory" mean?

[HallsofIvy]

Even if you don't have a dictionary, you clearly have all of the internet available.

Go to "google.com" and enter:

a) permittivity definition

b) Permeability definition

c) aleatory definition