Harper's Electricity Book for Boys
- Downloads
- Under 100
- Pages
- 306
About this book
Harper's Electricity Book for Boys is written and illustrated by Joseph H. Adams and comes with a dictionary of electrical terms. The text says a simple and inexpensive cell may be made from electric-light carbons, with the copper coating removed, and pencils of zinc that can be purchased for five cents each. The solution is made by dissolving four ounces of sal-ammoniac in a pint of water, and the jar should be filled three-fourths full.
For larger machinery, where more current is required, the text says the bluestone and the bi-chromate batteries will be found necessary. One figure represents a dynamo whose field-magnets are excited by a separate battery or generator, which is known as a “separately excited” machine. The text defines P-C as an abbreviation for porous cup and Pear Push as a push-button enclosed in a handle having the shape of a pear.
About the author
More from this genre
See all- D Dorothy on a RanchDorothy on a Ranch
- U Uncle Sam's Boys as LieutenantsUncle Sam's Boys as Lieutenants
- P Patty's Social SeasonPatty's Social Season
- L The Launch Boys' Adventures in Northern WatersThe Launch Boys' Adventures in Northern Waters
- C The Children's Book of LondonThe Children's Book of London
- F The FlagThe Flag
Discussion
No comments yet. Share a thought, a question or a favourite passage.
Copyright concern? Read our DMCA policy
Read or download
Public domain book This work is in the public domain and free of copyright. Anyone may read, download and share it.
- PDF 22 MB
- EPUB 20 MB
Downloads start right away. How to open EPUB on your phone
Book facts
- Author
- Joseph H. Adams
- Pages
- 306
- Language
- English
- Genre
- Childrens Classics
- Formats
- PDF, EPUB, Read online