|
Old Time Secrets of
Making Permanent Magnets
from
various sources
reprinted by Lindsay Publications
You CAN make powerful permanent magnets.
The first natural magnets, lodestones, came from Magnesia, and,
being rare and exotic, were extremely expensive. Before long experimenters
found ways to use a lodestone to create "artificial" magnets of steel.
Several
hundred years ago, steel was itself a rare, expensive metal but it was far
easier to acquire than a natural magnet. By the early 1800's very strong magnets
capable of lifting a thousand pounds were being fabricated by single-touch
and double-touch methods together with compounding using soft-iron pole pieces.
Here you get a collection of chapters, articles, bits and pieces
from early physics texts and Machinery magazine and a complete reproduction
of a 1919 booklet on permanent magnets published by the Esterline Co. In addition
you get additional explanation of magnetism terms, other books you may want
to acquire, and additional terms you'll need to understand if you are to become
a sophisticated magnet experimenter.
Two
articles describe how magnetos were mass-produced by the Remy company for
the exploding auto industry in 1910. Then a series of articles from Machinery
magazine explores the manufacture of permanent magnets from carbon steel,
the recharging of magnets, hardening, and experiments with different steels.
Then you get chapters on magnets, their fabrication and use, from science
texts written by Silliman and another by Frick. You also get select pages
from "First Steps in Magnetism", along with the 31 page Esterline booklet.
Yes,
you can make powerful permanent magnets. No, they're not going to be as efficient
as modern samarium or neodymium magnets, or even the classic alnico types.
But revealed are precisely the techniques used to create the powerful magnetic
magazine used by Michael Faraday to invent his disc generator that so intrigues
the perpetual motion and free energy crowd.
If want to build that permanent magnet motor that you're "sure"
will work, or that levitating flying saucer you'll use to search for diamonds
on Venus, then maybe this will amuse you. On the other hand, if you dream
of building a slow-speed permanent magnet alternator or just want to tinker
with magnets, you'll definitely find this of value.
Well illustrated. Unusual material. Good stuff. Get a copy!
5-1/2 x 8-1/2 softcover 120 pages
No. 23055 ...$9.95
|