﻿494 Prof. E. V. Huntington on a New 



standard pressure and temperature. By means of the 

 formulae established in this work this may be done to a 

 degree o£ accuracy limited only by the accuracy of the 

 experimental data. The writer hopes to publish some 

 examples of such a comparison at a later date. 



The third (and last) part of the present work will deal 

 with the effect of gravity on a solution, and the extension of 

 the theory to the case of a solution containing any number 

 of involatile solutes. 



The University, Leeds, 

 I3ec."23,l9il. 



XL VI. A New Approach to the Theory of Relativity. By 

 Edward V. Huntington, Ph.D., Assistant Professor of 

 Mathematics in Harvard University *. 



Introduction. 



I. System at Rest in the ^Rther. 



The regulating and setting- of stationary clocks. 



Laying- out a system of coordinates by light signals. 



Definition of distance. 



Definition of observed velocity. 



Definition of observed rate of a moving clock. 



Doppler's principle. 



II. System in Uniform Motion through the .Ether. 

 The transformation equations. 

 Features of the moving system. 

 The composition of velocities. 



III. The Principle oe Relativity. 



The inverse transformation equations. 

 Experiments in which no observer leaves his own station. 

 Experiments with a portable measuring-rod ; first phj-sical 



assumption involved in the theory of relativity. 

 Experiments with a portable clock ; second physical assumption 

 involved in the theory of relativity. 



Appendix. 



Introduction. 



rilHE Theory of Relativity as developed by Einstein f is 

 _L usually supposed to involve a radical modification, 

 not only of our conception of the aether, but also of our 

 fundamental notions concerning space and time ; and the 

 discussion of the so-called " paradoxes of relativity n has 



* Communicated bv the Author. Reprinted from the Heinrich Weber 

 Festschrift (Teubner, 1912). 



t A. Einstein, "Zur elektrodynamik bewegter Korper," Annalen der 

 Phjsik, ser. 4 ; vol. xvii. pp. 891-921 (1905). 



