Author: D.W.O. Heddle
Publisher: Taylor & Francis
Keywords: systems, lens, electrostatic
Number of Pages: 264
Published: 2000-12-13
List price: $119.95
ISBN-10: 0750306971
ISBN-13: 9780750306973

This book and software package enables readers to design lens systems for focusing beams of charged particles having useful characteristics. The text covers the basic theory of the motion of charged particles in electrostatic fields and describes several methods for the calculation of the potential and field distribution for various electrode geometries. Two methods, the Bessel function expansion method which was developed by the author and his students and the nine-point implementation of the finite difference method, are given special emphasis because they are particularly approp

Authors:Helen Edom, Moira Butterfield, Rebecca Heddle, Mik
Publisher: E.D.C. Publishing
Keywords: vol, activities, science, book, usborne
Number of Pages: 72
Published: 1993-01-01
List price: $13.99
ISBN-10: 074600978X
ISBN-13: 9780746009789

This colorful, exciting book responds to the growing emphasis on scientific exploration for young children. Its appealing activities are cleverly designed to help children investigate the facinating s