Free and Discounted Ebooks
Join 130,000 readers! Get our ebook deals straight to your inbox.

Scientific American Supplement, No. 392

July 7, 1883

Cover image for

Download


Author: Various Authors
Published: 1883
Language: English
Wordcount: 40,305 / 126 pg
Flesch-Kincaid Reading Ease: 35.4
LoC Category: Q
Downloads: 608
mnybks.net#: 360
Origin: gutenberg.org
Genres: Periodical, Science
Excerpt

we have a longitudinal neutrality produced in the same rod when placed magnetic west, the polarity in the latter case being transversal.

In all these cases we have a perfectly symmetrical arrangement, and I have not yet found a single case in well-annealed soft iron in which I could detect a heterogeneous arrangement, as supposed by Ampere, De la Rive, Weber, Wiedermann, and Maxwell.

We can only study neutrality with perfectly soft Swedish iron. Hard iron and steel retain previous magnetizations, and an apparent external neutrality would in most cases be the superposition of one magnetism upon another of equal external force in the opposite direction, as shown at B, Fig. 1. Perfectly soft iron we can easily free, by vibrations, from the slightest trace of previous magnetism, and study the neutrality produced under varying conditions.

[Illustration: FIG. 1.]

If we take a flat bar of soft iron, of 30 or more centimeters in length, and hold it vertically (giving while thus held a few torsions, vibra

SUBSCRIBE TO MANYBOOKS 

FREE EBOOKS 

Join 120,000+ fellow readers! Get Free eBooks and book bargains from ManyBooks in your inbox. 

We respect your email privacy

(advanced)
login | register

User ID

Password

reset password

Author of the Day

M C Domovitch
After years of being a top model, successful entrepreneur, financial planner and TV host, M C Domovitch decided to step out of the lime lights to a quieter life of writing and beekeeping. In this interview, Domovitch chats with us about her passion for writing, what inspired her latest book, Scar Tissue and how her own characters often surprise her.
Read full interview...