- #1
Kholdstare
- 388
- 1
In this thread Antiphon had written that
When I first encountered that, I thought there's something wrong with that, but could not figure it out. In order to create a current the electron must flow from one place to another. But in EM radiation although the electron oscillates or jiggles, it does not flow from transmitting antenna to receiving antenna.
I don't think resistance of a material has anything to do with characteristic impedance of a material.
In its most general form, the Ohm has nothing to do with materials and everything to do with the scalar ratio of Electric to Magnetic fields over suitable line integrals.
The propagation of energy in free space takes place at 376.7 Ohms.
All material characterizations are specific cases of this general definition.
When I first encountered that, I thought there's something wrong with that, but could not figure it out. In order to create a current the electron must flow from one place to another. But in EM radiation although the electron oscillates or jiggles, it does not flow from transmitting antenna to receiving antenna.
I don't think resistance of a material has anything to do with characteristic impedance of a material.