John Walsh and the conductivity of a vacuum In a 1774 letter to Dutch-born British scientist Jan Ingenhousz, Benjamin Franklin relates an experiment by another British scientist, John Walsh, that purportedly showed this astonishing fact: Although rarified air conducts electricity better than common air, a vacuum does not conduct electricity at all.
John Walsh and the conductivity of a vacuum In a 1774 letter to Dutch-born British scientist Jan Ingenhousz Benjamin Franklin relates an experiment by another British scientist John Walsh that purportedly showed this astonishing fact Although rarified air conducts electricity better than common air a vacuum does not conduct electricity at all