VI. SUMMARY The N (Macmillan, New I have argued that Newton's first two laws of motion are n, Princi- ns of force but rather contain strong 966)and was further s of Space-Time Theories of a four- A. Weyl, multaneity d New York, first given rie de la Suppl. 40, relativity by re these objects eorie de la 41,1-25 la gravi- ACKNOWLEDGMENT I wish to thank James Supplee for several helpful discus- n with Frank- sions and suggestions on improving the presentation of this lin Polloo paper. A. Einstein, "Zur electro nn. Phys. Leip- zig17,891-921(1905) J. B. Marion and S. T. Thornton, Classical Dynamics of Particles and Berlin, Sitzber. 778-786, 799-801 (1915); English translation available Systems(Harcourt, San Diego, 1988), 3rd ed., p. 45. in A. Einstein, The Principles of Relativity (Dover, New York, 1952). Precise calculation of the electrostatic force between charged spheres including induction effects Jack A. Soules Department of Physics, Cleveland State University, Cleveland, Ohio 44115 (Received 12 January 1989; accepted for publication February 1990) method of images is applied iteratively to compute precisely the electrostatic force between show that Coulomb overlooked induction effects revealed in his data. Most textbooks intr It requires qua ectrodynamics to calculate those ef- lomb's experiment and his results which ed by F~1/d2." This h fects when two electrons are really close. After perorming was a stu- the calculations for the force between charged conducting dent. When the sim nough to spheres (see Appendix for details), we decided to compare produce detectable fo to move the charg ental forces measured by d con- producinga ective d ha charged the descriptic pith balls een mathematical n not given but from course, the standard form to point charges that are i ly about 18 lines (1 in. ) (See n the centers of the balls was 1195 Am. J. Phys. 58(12), December 1990 1990 American Association of Physics Teachers 1195