588 Dr. A. C. Crehore on an Atomic Model 



is a rotating body of charge, and that it may be replaced 

 so far as great distances are concerned, by an equivalent 

 continuous ring of charge in rotation. The frequency of 

 revolution of the single electron in the Bohr hydrogen atom 

 is twice the Rydberg constant, and we shall assume that this 

 now represents the frequency of revolution of the ring 

 which is equivalent to the nucleus, for it seems logical in 

 changing over from the Ptolemaic to the Copernican form 

 of atom to retain the same frequency. 



The atomic model applied to the hydrogen atom is repre- 

 sented in meridian section in fig. 1. The nucleus, 0, is rela- 

 tively enlarged, it being impracticable to represent nucleus 



Fio-. 1. 



and electron to the same scale. The effective nucleus consists 

 of two charges, namely, the nucleus, G, having a positive 

 charge, 2e, and one negative electron, A or B, of single 

 charge, e. which are inseparable, thus making the effective 

 nuclear charge plus e. Thus from the neutral atom only 

 one electron is detachable. Both electrons, A and B, in the 

 normal state of the atom are in contact with the positive 

 charge, C, one at each pole. All three charges rotate 

 around a common axis, PQ, but the electron has no ten- 

 dency to describe an orbit revolving around the nucleus. 

 The rotation of the two electrons is small by comparison 

 with the nucleus and may be neglected for the present, 

 though it cannot be neglected for other problems. 



According to these data the volume of the positive nuclear 

 charge of 2e is by (70) equivalent to a sphere of radius 



5m H &\ c / 



4-86 x 10" 16 cm. 



(78) 



