GRAVITATION AND ELECTRICAL ACTION.* 
Francis E. Nreue|r. 
In former publications the present writer has sug- 
gested an intimate relation between gravitation and elec- 
trical action. 
There can be no doubt of the truth of the statement, 
that the attraction between any two masses of matter, 
depends not only upon the amount of matter in the two 
masses, and their distance from each other, but also upon 
their electrical condition. 
Assume that two spheres, having radii R, and R., com- 
posed of metal having a density p> and distant from each 
other r, have electrical charges Q, and Q,, the spheres 
having a common potential V. Their attraction for each 
other will be: 
MMs 1yv2 
ee 
r r 
—plé wR PP? BR: Vy? 
9 r? od 
se 16 mw R*, BR, p? sie Im, M2 \Vr ee 1 
chie % r ee re) r (1) 
Here K is the Newton constant of gravitation as it 
would be determined if electrical action were eliminated, 
or if V were zero absolute. The absolute zero in V 
*Presented by title to The Academy of Science of St. Louis, Feb- 
Tuary 21, 1916. 
any 
* Proc. Am. Phil. Soc. Philadelphia 52: 283—6. 
Science Sept. 1, 1911: 282-3. 
Experimental Studies in Hlectricity and Magnetism. 19-24. 
(163 
