Contents

Longitudinal electrodynamic forces - and their possible technological applications

Master of Science Thesis by Lars Johansson,

If you prefer, you can download the whole thesis in Postscript (.ps) or Adobe Acrobat (.pdf)  format from http://www.df.lth.se/~snorkelf/download.html

Abstract

This thesis deals with the relatively unknown phenomena of longitudinal forces in conductors. A survey of relevant experiments is given. Ampere electrodynamics, which has been proposed to account for the phenomena, is compared with a Maxwell stress approach, and these are found to be equivalent. The relationship between different `action at a distance' theories is discussed. The role of relativistic electric fields, and electric fields from surface charges, is considered.

Several interesting applications such as metal punching, liquid metal pumping, water-arc jet propulsion, high current limiting and electrodynamic plasma fusion are covered, together with a novel application: the electrodynamic explosion motor.

Lund, September 19:th, 1996

(Thesis Adviser: Professor Gerhard Kristensson )

Department of Electromagnetic Theory
Lund Institute of Technology
P.O. Box 118
S-221 00 Lund, SWEDEN

• Contents
• Introduction
• Experiments
• Theoretical discussion
• Analysis of experiments
• Applications
• Summary
• References

Lars Johansson, Ms. Sc. Electrical engineering.
Email: forename.surname@newphys.se
Lund, August 4:th, 1997