Hysteresis
Steinmetz Usage
Section titled “Steinmetz Usage”Hysteresis is the lag of magnetic response behind magnetizing force, together with the energy loss associated with cycling magnetic material through changing field conditions. It is one of Steinmetz’s historically central contributions to electrical engineering.
The seeded OCR for Alternating Current Phenomena includes magnetic hysteresis, dielectric hysteresis, effective resistance, wave-shape distortion, and transformer behavior. These links matter because hysteresis is not merely a material curiosity; it appears in practical AC loss, apparatus design, and waveform behavior.
Modern Equivalent
Section titled “Modern Equivalent”Modern readers encounter hysteresis in B-H curves, core loss, magnetic material modeling, transformer design, motor design, and nonlinear systems more generally.
Diagrammatic Explanation
Section titled “Diagrammatic Explanation”
Mathematical Direction
Section titled “Mathematical Direction”The archive now has a candidate equation page for the Steinmetz Hysteresis Law. It remains source-located but not scan-final because the exact historical units and notation need page-level verification.
Use the Hysteresis Loop and Steinmetz Loss tool as a visual calculator for the law. The tool keeps eta adjustable so it does not pretend that the historical unit translation has already been finalized.
Ether-Field Interpretive Reading
Interpretive only: hysteresis is a strong candidate for field-memory or field-lag interpretations. Such readings should be clearly separated from Steinmetz’s engineering statements and from modern magnetic material theory.
Source-Grounded Dossier
Section titled “Source-Grounded Dossier”Generated evidence layer: this dossier is built from the processed concept concordance. Counts and snippets are OCR/PDF-text aids, not final quotations. Verify against scans before making exact claims.
Candidate occurrences tracked for this page.
Sources with at least one hit.
Sections, lectures, chapters, or report divisions to review.
What The Current Corpus Shows
Section titled “What The Current Corpus Shows”Read this concept as both material physics and engineering loss accounting. The archive should preserve Steinmetz’s magnetic vocabulary before translating it into modern loss models.
The strongest current source concentration is Theory and Calculation of Electric Circuits with 1115 candidate hits across 27 sections.
The dossier is meant to turn a concept page into a research workbench: begin with Steinmetz’s source wording, then add modern interpretation, mathematical reconstruction, historical context, and any ether-field reading as separate layers.
Terms And Aliases Tracked
Section titled “Terms And Aliases Tracked”hysteresis, magnetic lag, molecular friction, flux, magnetic, magnetism, magnetization, magnetizing, reluctance
Concordance Records
Section titled “Concordance Records”Source Distribution
Section titled “Source Distribution”| Source | Candidate Hits | Sections | Concepts represented |
|---|---|---|---|
| Theory and Calculation of Electric Circuits | 1115 | 27 | Hysteresis, Magnetism |
| Theory and Calculation of Electric Apparatus | 970 | 34 | Hysteresis, Magnetism |
| Theoretical Elements of Electrical Engineering | 939 | 85 | Hysteresis, Magnetism |
| Theory and Calculation of Alternating Current Phenomena | 928 | 38 | Hysteresis, Magnetism |
| Theory and Calculation of Alternating Current Phenomena | 805 | 33 | Hysteresis, Magnetism |
| Theory and Calculation of Alternating Current Phenomena | 661 | 30 | Hysteresis, Magnetism |
| Theory and Calculation of Transient Electric Phenomena and Oscillations | 610 | 32 | Hysteresis, Magnetism |
| Elementary Lectures on Electric Discharges, Waves and Impulses, and Other Transients | 416 | 12 | Hysteresis, Magnetism |
Priority Passages To Read
Section titled “Priority Passages To Read”Chapter 20: Single-Phase Commutator Motors - 247 candidate hits
Source: Theory and Calculation of Electric Apparatus (1917)
Location: lines 23906-30087 - Tracked concepts: Hysteresis, Magnetism
Open source text - Open chapter workbench
... e an = e. l this diagram, and in the preceding approximate calculat magnetic flux, *, has been assumed in phase with the curren l reality, however, the equivalent sine wave of magn $, lags behind the equivalent sine wave of exciting curren he angle of hysteresis lag, and still further by the po ase tx, on- the file, on, ,/- etic ,/. wcr SINGLE-PHASE C...... e.m.f. of rotation is not entirely a power e.m.f., but contains a wattless lagging component. The e.m.f. of alternation, OE0, is 90° ahead of O*, hence less than 90° ahead of OI, and therefore contains a power component representing the power consumed by hysteresis, eddy currents, and the short-circuit current under the brushes. Completing now the dia...Chapter 12: Effective Resistance And Reactance - 199 candidate hits
Source: Theory and Calculation of Alternating Current Phenomena (1916)
Location: lines 10718-13483 - Tracked concepts: Hysteresis, Magnetism
Open source text - Open chapter workbench
... the electric conductor b}^ a current of uniform density, the effective resistance represents the total expenditure of power. Since in an alternating-current circuit, in general power is expended not only in the conductor, but also outside of it, through hysteresis, secondary currents, etc., the effective resist- ance frequently differs from the true o...... the cause of most of the difficulties met in dealing analytically with alternating-current circuits containing iron. 90. The foremost sources of energy loss in alternating-current circuits, outside of the true ohmic resistance loss, are as follows : 1. Molecular friction, as, (a) Magnetic hysteresis; (6) Dielectric hysteresis. 2. Primary electric curr...Chapter 8: Shaping Of Waves By Magnetic Saturation - 181 candidate hits
Source: Theory and Calculation of Electric Circuits (1917)
Location: lines 12962-16963 - Tracked concepts: Hysteresis, Magnetism
Open source text - Open chapter workbench
... . 66. It is interesting to note that in, the peak reactance, ia approxi- mately constant, that is, does not decrease with increasing mag- netic saturation. (The higher value at beginning saturation, for / - 20, may possibly be due to an inaccuracy in the hysteresis cycle of Fig. 55, a too great steepness near the zero value, rather than being actual.)...... ransformer increases approximately ^/26 = 4.47 times, and the maximum voltage peak 20 times above the full-load voltage of the transformer. As the shape of the magnetic flux density and voltage waves are determined by the current and flux relation of the hysteresis cy- cles, and the latter are entirely empirical and can not be expressed mathematically...Chapter 12: Reactance Of Induction Apparatus - 178 candidate hits
Source: Theory and Calculation of Electric Circuits (1917)
Location: lines 22634-23465 - Tracked concepts: Hysteresis, Magnetism
Open source text - Open chapter workbench
... such cases, the magnetic fields of the reactance of the electric circuit may be merely a more or less fictitious component of the resultant mag- netic field. The industrial importance hereof is that many phenomena, such as the loss of power by magnetic hysteresis, the m.m.f. required for field excitation, etc., are related to the resultant magnetic fi...... actance is not entirely arbitrary. Assuming we assign all the reactance to the primary, and consider the secondary as having no reactance. Then the mutual mag- netic flux and mutual induced voltage would be cf = jP = jPo - [ro + i (xo + xi)] /o and the hysteresis loss in the transformer would correspond hereto, by the usual assumption in transformer c...Chapter 4: Magnetism - 165 candidate hits
Source: Theory and Calculation of Electric Circuits (1917)
Location: lines 6942-9061 - Tracked concepts: Hysteresis, Magnetism
Open source text - Open chapter workbench
CHAPTER IV MAGNETISM Hysteresis 36. Unlike the electric current, which requires power for its maintenance, the maintenance of a magnetic flux does not require energy expenditure (the energy consumed by the magnetizing current in the ohmic resistance of the magnetizing winding being an ...... on, at least in those materials, which have permeabilities materially higher than unity. Thus, if a magnetic flux is periodically changed, between + B and - B, or between Bi and Bz, as by an alternating or pul- sating current, a dissipation of energy by molecular friction occurs during each magnetic cycle. Experiment shows that the energy consumed per...Chapter 10: Effective Resistance And Reactance - 164 candidate hits
Source: Theory and Calculation of Alternating Current Phenomena (1900)
Location: lines 6957-8383 - Tracked concepts: Hysteresis, Magnetism
Open source text - Open chapter workbench
... electric conductor by a current of uniform density, the effective resistance repre- sents the total expenditure of energy. Since, in an alternating-current circuit in general, energy is expended not only in the conductor, but also outside of it, through hysteresis, secondary currents, etc., the effective resistance frequently differs from the true ohm...... cause of most of the difficulties met in dealing analytically with alternating-current circuits containing iron. 73. The foremost sources of energy loss in alternating- current circuits, outside of the true ohmic resistance loss, are as follows : 1.) Molecular friction, as, a.) Magnetic hysteresis ; b.) Dielectric hysteresis. 106 .ALTERNATING-CURRENT...Reading Layers To Build Out
Section titled “Reading Layers To Build Out”| Layer | What to add next |
|---|---|
| Steinmetz wording | Pull exact source passages only after scan verification; keep OCR text labeled until then. |
| Modern engineering reading | Translate the source usage into present electrical-engineering or physics language without erasing the older vocabulary. |
| Mathematical layer | Link equations, variables, diagrams, and worked examples when the concept has formula candidates. |
| Historical layer | Identify whether the term is still used, renamed, absorbed into modern theory, or historically obsolete. |
| Ether-field interpretation | Keep interpretive readings separate from Steinmetz’s explicit claim and from modern physics. |
| Open questions | Record places where the concordance suggests a lead but the scan or edition has not yet been checked. |
Next Editorial Actions
Section titled “Next Editorial Actions”- Open the highest-priority source-text passages above and verify the wording against scans.
- Promote exact definitions, equations, diagrams, and hidden-gem passages into this page with source references.
- Add related concept links, equation pages, and diagram pages once the evidence is scan checked.
- Keep speculative or Wheeler-style readings in explicitly labeled interpretation blocks.