How Electric Current, Electric Field and Magnetic Field Are Generated

The companion page Electromagnetism summarises the unified picture: electric field, magnetic field and light are three views of one membrane disturbance. This page goes deeper. It walks step-by-step through the actual generation mechanism — what happens to the Tai Chi nodes when a current flows, what happens to the surrounding membrane that we measure as an electric or magnetic field, and how the three phenomena are derived from a single underlying physics. Each step is a precise SPT operation; together they reproduce all of classical electromagnetism without the historical patchwork of separate principles.

One mechanism, three appearances. An electron is a Tai Chi node that both flips and spins. When electrons drift collectively → electric current. The propagating phase-disturbance of the moving electrons → electric field. The same disturbance viewed when many electrons spin in concert → magnetic field. The propagating flip pattern of any of the above → light. All four are different aspects of the same membrane updating, and the membrane updates at $c$ .

Starting point — what an electron actually IS

Before we can describe how an electron generates a field, we have to be clear what it is. Standard physics describes the electron as a charged point particle with intrinsic spin and mass. Useful for prediction but tells us nothing about what is doing the charging or spinning. SPT supplies the geometric content: an electron is a single Tai Chi node performing two simultaneous motions — flip and spin:

Flip is the membrane oscillation around the node — the bright/dark face exchange that is the source of all electromagnetic radiation. The flip-rate sets the local phase frequency. Flip is what couples the electron to photons, fields and other charged particles.
Spin is the internal rotation of the node's two poles around their inner axis. Spin is what gives the electron its bound rotational energy (the geometric origin of its mass), its quantum angular momentum, and its magnetic moment. Spin is also what binds the electron into atoms via in-phase coupling with nuclear spin.

The electron's 'charge' is, in SPT, the way the membrane around the electron tilts because of these two motions. Charge is not a separate fundamental property added on top of the electron; it is a geometric consequence of the way an electron's flip-and-spin disturbs the surrounding phase-state. A positive charge (e.g. a proton) tilts the membrane in the opposite phase-direction; that is why opposite charges attract (in-phase coupling rule) and same charges repel (anti-phase coupling rule). The two foundational electromagnetic facts fall straight out of node geometry without any free parameters.

Step 1 — How electric current is generated

When you connect a battery to a wire, you create a phase-pressure difference between the two ends of the wire. The high-phase-tilt end pushes electrons toward the low-phase-tilt end. Each electron, as a flip-and-spin Tai Chi node, drifts through the metallic lattice in the direction of decreasing phase-pressure. Critically, this is not like marbles rolling down a tube — the electrons themselves move only at a few millimetres per second (the 'drift velocity'). What moves at near- $c$ is the phase-pressure update propagating through the membrane along the entire wire, telling every electron in the wire to start drifting almost simultaneously.

A current is therefore not really 'electrons flowing through a wire' in the simple billiard-ball sense. It is a collective phase-displacement of the membrane along the wire's length, with each electron-node nudged by the local phase-pressure change. The electrons drift slowly; the disturbance that organises them propagates near $c$ . This is why the lights in your room come on essentially instantly when you flip the switch, even though the actual electrons in the wire may take an hour to drift from the switch to the bulb.

Current $I$ in amperes is, in SPT, the rate at which the collective phase-displacement passes a cross-section of the wire. It quantifies how many node-flips per second cross the chosen surface — directly observable, directly measurable, and directly tied to the underlying membrane physics rather than being a derived bookkeeping quantity.

Step 2 — How electric field is generated

An electron sitting at rest still tilts the surrounding membrane phase, because its flip-and-spin is happening continuously. The electric field is the spatial pattern of that phase-tilt extending outward from the electron. Each surrounding membrane patch is gently pulled out of its baseline phase by the electron's presence; the further away the patch, the smaller the phase-tilt it experiences. Standard physics describes this with a $1/ r^{2}$ Coulomb law; SPT derives the $1/ r^{2}$ directly from the geometry: the phase-disturbance spreads over the surface of an expanding 3D shell whose area grows as $4 π r^{2}$ , so the disturbance per unit area falls as $1/ r^{2}$ . The inverse-square law is not a mysterious feature of nature; it is what 3D geometry forces on any spatially-spreading disturbance.

Detection. When you bring a charged probe (another electron, or a positive test charge) into the electron's electric field, the probe feels the phase-tilt and is pushed accordingly. In-phase tilt → attraction; anti-phase tilt → repulsion. The 'force' of the electric field is just the geometric pressure of the phase-tilt acting on the probe's own flip-and-spin. No mysterious 'force-mediating particle' is required at the macroscopic level; the field IS the membrane's tilted phase configuration. (Photons, the standard-model 'force carriers' of electromagnetism, are in SPT the quantised propagating disturbances of the same field — see Why Electrons Create Photons.)

Step 3 — How magnetic field is generated

The magnetic field is the most subtle piece. It is what the electric field looks like when many electrons spin in coherent in-phase concert. A single resting electron has a tiny magnetic moment from its own spin; one electron's contribution is too small to be felt at macroscopic scales. But when billions of electrons synchronise their spin axes — the way they do in a magnet's iron lattice, in a current-carrying wire, in Earth's molten outer core, in a magnetar's surface plasma — the individual phase-tilts add up coherently and produce a measurable collective phase-rotation in the surrounding membrane. That collective rotation pattern is the magnetic field.

This explains why moving charges produce magnetic fields, while static isolated charges do not. A moving charge — a current — is automatically a population of co-aligned electron-spins (the spins are dragged into approximate co-alignment by the collective phase-pressure of the current's drift direction). A static, isolated charge has no such collective spin-alignment and therefore produces only an electric field, not a magnetic one. The magnetic field is the spin-coherence signature of moving charge populations, not a separate physical entity.

Right-hand rule and field geometry. The familiar 'right-hand rule' from physics class — magnetic field circulates around a current in a specific rotational direction — falls out of SPT as the geometric direction in which the spinning electrons collectively tilt the surrounding membrane. The 'rotation sense' of the magnetic field is the direction the surrounding membrane is being phase-twisted by the coherent electron spin. No memorisation needed; it is a geometric inevitability of the underlying spin-coherence pattern.

How they interplay — Maxwell's equations from one mechanism

Once we have the three mechanisms, Maxwell's four equations of classical electromagnetism fall out automatically — not as four independent laws but as four consequences of one underlying membrane physics:

Gauss's law for electricity ( $\nabla \cdot E = ρ / ε_{0}$ ): electric field lines emanate from charges. SPT translation: phase-tilts spread outward from each tilting source (charge), with $ε_{0}$ being the membrane's tilt-stiffness.
Gauss's law for magnetism ( $\nabla \cdot B = 0$ ): no magnetic monopoles. SPT translation: a magnetic field is by definition a coherent rotation of the membrane, and rotations always close back on themselves — there is no such thing as a 'rotation source' that the field lines could emerge from without returning. This is why magnetic monopoles cannot exist in SPT; their non-existence is geometric, not contingent.
Faraday's law ( $\nabla \times E = - \partial B / \partial t$ ): a changing magnetic field induces an electric field. SPT translation: when the coherent rotation of the membrane (B) changes, the surrounding phase-tilt (E) is dragged into circulation. The two are inseparable because they are aspects of one membrane.
Ampère-Maxwell law ( $\nabla \times B = μ_{0} J + μ_{0} ε_{0} \partial E / \partial t$ ): a current OR a changing electric field induces a magnetic field. SPT translation: collective phase-displacement (current) or rapid phase-tilt change both produce coherent rotation in the surrounding membrane. Both are sources of the same geometric phenomenon.

The wave equation that produces light falls out of these four together: the changing electric field generates a magnetic field, the changing magnetic field generates an electric field, and the two propagate together at $c$ — the membrane's own rate-limit. Light is not a separate phenomenon imposed on top of electromagnetism; light IS the propagating mutual induction of E and B, both of which are aspects of the same membrane updating at $c$ . The most famous result of classical physics is, in SPT, a geometric inevitability.

Macroscopic examples — from atom to magnetar

The same generation mechanism scales seamlessly across enormous ranges:

Single atom

Electrons in atomic orbitals have intrinsic spin and orbital motion. Their combined phase-tilt produces atomic electric and magnetic moments — the basis of chemical bonding and magnetic susceptibility.

Permanent magnet (iron, nickel)

Crystal lattice locks billions of electron spins into co-aligned domains. The collective coherent spin produces a steady magnetic field at room temperature without continuous energy input — the alignment is energetically favoured by the phase-coupling rule.

Current-carrying wire

Drift of

\sim 1 0^{20}

electrons per second through the lattice; their collective phase-displacement produces both the macroscopic current

I

and the encircling magnetic field. Cut the current, the field collapses within a few cycles.

Earth's magnetic field

Convection of molten iron in the outer core, driven by Earth's rotation, drags trillions of free electrons into roughly coherent spin-alignment at planetary scale. The resulting collective phase-rotation produces Earth's planetary magnetic field, which protects life on the surface from solar wind. (See Electromagnetism § Earth.)

Magnetar (neutron star with extreme field)

Surface plasma with phase-coupled spin-coherence at densities approaching nuclear matter. The coherent spin produces magnetic fields up to

1 0^{15}

Gauss, the strongest in the universe. The same mechanism as Earth's, just operating at a vastly higher coherence density.

Galactic and cosmic magnetic fields

Trillions of stars and intergalactic plasma carry vast populations of co-aligned electron spins. Their collective phase-rotation produces the galaxy-scale and cluster-scale magnetic fields observed by radio astronomy. The seed for these fields was the early universe's first phase-coherent rotation epochs (see Paradoxes § Cosmic magnetic field origin).

The mechanism in one paragraph

An electron is a Tai Chi node that flips and spins. Drifting collectively, electrons produce electric current — a propagating phase-displacement of the membrane. The phase-tilt around moving or stationary electrons is the electric field, with $1/ r^{2}$ falloff dictated by 3D geometry. When many electrons spin in coherent in-phase concert, the surrounding membrane is collectively rotated; that coherent phase-rotation is the magnetic field. Maxwell's four equations and the wave equation for light fall out of these three mechanisms automatically. From single atoms to permanent magnets to current-carrying wires to Earth's geomagnetic dipole to magnetars to galactic magnetic fields, the same generation mechanism operates — just at vastly different coherence densities. One physics, one membrane, three appearances, all of electromagnetism.