Figure 4 of Elementary lectures on electric discharges, waves and impulses, and other transients
Publisher
McGraw-Hill Book Company
Description
Fig. 4. — Curve of Simple Transient: Decay of Current. (2 decaying curves of current decay: i (higher) and i' (lower) ; on y-axis is i, on x-axis time t; i1 is measured at t1 (marked as a1), i.e. the highest i-curve; i2 is measured at the lower i'-curve on t1 (the same time), the same i2 value crossing the higher i-curve gives a later time denoted as t; the tangent of a1 (highest i1 current) crosses the x-axis after time t and is denoted as t2 giving an angle on the x-axis denoted as Φ (phi). Lecture I: NATURE AND ORIGIN OF TRANSIENTS.)
This image is in the public domain because it is a mere mechanical scan or photocopy of a public domain original, or – from the available evidence – is so similar to such a scan or photocopy that no copyright protection can be expected to arise. The original itself is in the public domain for the following reason:
Public domainPublic domainfalsefalse
The author died in 1923, so this work is in the public domain in its country of origin and other countries and areas where the copyright term is the author's life plus 100 years or fewer.
https://creativecommons.org/publicdomain/mark/1.0/PDMCreative Commons Public Domain Mark 1.0falsefalse
This tag is designed for use where there may be a need to assert that any enhancements (eg brightness, contrast, colour-matching, sharpening) are in themselves insufficiently creative to generate a new copyright. It can be used where it is unknown whether any enhancements have been made, as well as when the enhancements are clear but insufficient. For known raw unenhanced scans you can use an appropriate {{PD-old}} tag instead. For usage, see Commons:When to use the PD-scan tag.
Note: This tag applies to scans and photocopies only. For photographs of public domain originals taken from afar, {{PD-Art}} may be applicable. See Commons:When to use the PD-Art tag.
File history
Click on a date/time to view the file as it appeared at that time.
{{BookNaviBar2 |1=Elementary lectures on electric discharges, waves and impulses, and other transients (Steinmetz 1911, fig 3).png |2=Elementary lectures on electric discharges, waves and impulses, and other transients (Steinmetz 1911, fig 5).png }} {{Elementary lectures on electric discharges, waves and impulses, and other transients (Steinmetz 1911) |figure number=4 |figure caption=Curve of Simple Transient: Decay of Current. |figure alt caption=<!-- alt descr for blind people -->2 decayin...