Some more interesting discussions with Ed Dellian has resulted in this ‘summary’, made in context with my current level of understanding of Catt Theory of electromagnetism):

- Energy current (
**E-vector**) causes**momentum p**. **Causality**is made via the proportionality coefficient c (**speed of energy current**)- Momentum p is what mediates between E-vector and changes in the
**matter**. - Momentum p is preserved as energy current hits the matter.
- Momentum in the matter presents another form of energy (
**E-scalar**). - E-scalar characterises the elements of the matter as they move with
**a (material) velocity**. - As elements of the matter move they cause changes in Energy current (E-vector) and this forms a
*fundamental feedback mechanism*(which is recursive/fractal …).

Telling this in terms of **EM theory and electricity**:

- E-vector (Poynting vector aka Heaviside signal) causes E-scalar (electric current in the matter).
- This causality between E-vector and E-scalar is mediated by momentum p causing the motion of charges.
- The motion of charges with material velocity causes changes in E-vector, i.e. the feedback effect mentioned above (e.g. self-induction)

I’d be most grateful if someone refutes these items and bullets.

I also recommend to read my blog (from 2014) on discretisation

On Quantisation and Discretisation of Electromagnetic Effects in Nature