- ホーム
- > 洋書
- > 英文書
- > Science / Mathematics
Full Description
Silvanus P. Thompson (1851-1916) was an engineer and physicist who researched aspects of electricity, magnets and optics. He spent his career teaching, first as a professor in Bristol and later in London, at the City and Guilds Finsbury Technical College, and he was a frequent public speaker on scientific matters. Over the course of his career he became especially interested in technical education, and produced many books that explained complicated scientific concepts with clarity, including his most famous work Calculus Made Easy. In this work, published in 1891, Thompson explains the importance and function of the electromagnet. Starting with the history and development of electromagnets, the work looks at the principle of the magnetic current, and gives detailed descriptions - including numerous technical illustrations - of electromagnetic motors and machine tools, providing an engaging guide to the latest forms of scientific knowledge at the end of the nineteenth century.
Contents
Preface; 1. Historical introduction; 2. Generalities concerning electromagnets and electromagnetism. Typical forms of electromagnets. Materials of construction; 3. Properties of iron; 4. Principle of the magnetic circuit. The law of traction; Design of electromagnets for maximum traction; 5. Extension of the law of the magnetic circuit to cases of attraction of an armature at a distance. Calculation of magnetic leakage; 6. Rules for winding copper wire coils; 7. Special designs. Rapid-acting electromagnets. Relays and chronographs; 8. Coil-and-plunger; 9. Electromagnetic mechanism; 10. Electromagnetic vibrators and pendulums; 11. Alternate-current electromagnets; 12. Electromagnetic motors; 13. Electromagnet machine tools; 14. Modes of preventing sparking; 15. The electromagnet in surgery; 16. Permanent magnets; Appendix; Index.
