Theory Section 11: Capacity and Condensers
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Source Metadata
Section titled “Source Metadata”| Field | Value |
|---|---|
| Source | Theoretical Elements of Electrical Engineering |
| Year | 1915 |
| Section ID | theoretical-elements-electrical-engineering-section-11 |
| Location | lines 3586-3760 |
| Status | candidate |
| Word Count | 698 |
| Equation Candidates In Section | 0 |
| Figure Candidates In Section | 0 |
| Quote Candidates In Section | 0 |
Opening Source Excerpt
Section titled “Opening Source Excerpt”11. CAPACITY AND CONDENSERS 51. The charge of an electric condenser is proportional to the impressed voltage, that is, potential difference at its terminals, and to its capacity. A condenser is said to have unit capacity if unit current exist- ing for one second produces unit difference of potential at its terminals. The practical unit of capacity is that of a condenser in which 1 amp. during one second produces 1 volt difference of potential. The practical unit of capacity equals 10~9 absolute units. It is called a farad. One farad is an extremely large capacity, and therefore one millionth of one farad, called microfarad, mf., is commonly used. If an alternating e.m.f. is impressed upon a condenser, the charge of the condenser varies proportionally to the e.m.f., and CAPACITY AND CONDENSERS 55 thus thereSource-Located Theme Snippets
Section titled “Source-Located Theme Snippets”Dielectricity / capacity
Section titled “Dielectricity / capacity”11. CAPACITY AND CONDENSERS 51. The charge of an electric condenser is proportional to the impressed voltage, that is, potential difference at its terminals, and to its capacity. A condenser is said to have unit capacity if unit current exist- ing for ...Radiation / light
Section titled “Radiation / light”... to the condenser during rising and from the condenser during decreasing e.m.f., as shown in Fig. 26. That is, the current consumed by the condenser leads the impressed e.m.f. by 90 time degrees, or a quarter of a period. Denoting / as frequency and E as effective alternating e.m.f. impressed upon a condenser of C'mf. capacity, the condenser is charged and discharged twice during each cycle, and the time of one complete charge or discharge is therefore j^- Since E \/2 is the ma ...Hysteresis
Section titled “Hysteresis”... Transposing, the e.m.f. of the condenser is 106/ 106 The value z0 = fn is called the condensive reactance of the ^ 7T/C condenser. 56 ELEMENTS OF ELECTRICAL ENGINEERING Due to the energy loss in the condenser by dielectric hysteresis, the current leads the e.m.f. by somewhat less than 90 time de- grees, and can be resolved into a wattless charging current and a dielectric hysteresis current, which latter, however, is generally so small as to be negligible, though in un ...Impedance / reactance
Section titled “Impedance / reactance”... onsumes a current of 1 = 2 irfCE 10~6 amp. effective, which current leads the terminal voltage by 90 degrees or a quarter period. Transposing, the e.m.f. of the condenser is 106/ 106 The value z0 = fn is called the condensive reactance of the ^ 7T/C condenser. 56 ELEMENTS OF ELECTRICAL ENGINEERING Due to the energy loss in the condenser by dielectric hysteresis, the current leads the e.m.f. by somewhat less than 90 time de- grees, and can be resolved into a wat ...Chapter-Local Concept Hits
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Modern Engineering Reading Prompts
Section titled “Modern Engineering Reading Prompts”- Dielectricity / capacity: Check whether the passage treats capacity, condensers, displacement, or dielectric stress as field storage rather than only circuit algebra.
- Radiation / light: Compare the chapter’s radiation vocabulary with modern electromagnetic radiation, spectral frequency, wavelength, absorption, and illumination engineering.
- Hysteresis: Compare the passage with modern magnetic loss, B-H loop area, lag, material memory, and empirical loss laws.
- Impedance / reactance: Translate historical opposition terms into modern impedance, admittance, conductance, susceptance, and complex-plane notation.
Ether-Field Interpretive Boundary
Section titled “Ether-Field Interpretive Boundary”- Dielectricity / capacity: A Wheeler-style reading may emphasize dielectric compression, field stress, and stored potential, but this page treats that as interpretation unless Steinmetz explicitly says it.
- Radiation / light: Radiation and wave language can invite ether-field comparison, but source wording, modern radiation theory, and speculative synthesis must stay separated.
- Hysteresis: An interpretive reading can treat hysteresis as field lag or memory, but the historical claim must remain Steinmetz’s actual magnetic-loss treatment.
Promotion Checklist
Section titled “Promotion Checklist”- Open the full source text and the scan or raw PDF.
- Verify the chapter boundary and surrounding context.
- Promote exact quotations only after checking the source image.
- Move mathematical candidates into canonical equation pages only after formula typography is corrected.
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- Keep Steinmetz wording, modern translation, and ether-field interpretation in separate labeled layers.