﻿324 
  

  

  Dr. 
  L. 
  Vegard 
  on 
  the 
  X-Ray 
  Spectra 
  

  

  For 
  the 
  same 
  value 
  of 
  p 
  the 
  conductivity 
  ought 
  to 
  

   increase 
  with 
  the 
  atomic 
  number 
  on 
  account 
  of 
  the 
  increase 
  

   of 
  n. 
  Also 
  this 
  variation 
  is 
  clearly 
  exhibited 
  by 
  the 
  curve 
  

   of 
  Benedicks. 
  At 
  any 
  rate 
  the 
  rule 
  seems 
  to 
  hold 
  without 
  

  

  Ffc. 
  4. 
  

  

  23466789 
  fO 
  

  

  Number 
  of 
  electrons 
  in 
  surface 
  ring 
  

  

  exception 
  for 
  elements 
  with 
  atomic 
  numbers 
  smaller 
  than 
  

   those 
  of 
  the 
  rare 
  earths. 
  Above 
  these 
  elements 
  there 
  is 
  

   again 
  a 
  drop 
  in 
  the 
  conductivity, 
  as 
  if 
  there 
  had 
  been 
  a 
  drop 
  

   in 
  the 
  quant 
  numbers. 
  

  

  The 
  Electron 
  Systems 
  and 
  Radioactivity. 
  

  

  The 
  constitution 
  of 
  atoms 
  here 
  proposed 
  gives 
  us 
  also 
  

   the 
  simplest 
  possible 
  conception 
  with 
  regard 
  to 
  the 
  changes 
  

   of 
  the 
  electronic 
  system 
  which 
  accompany 
  a 
  transformation 
  

   process. 
  The 
  elements 
  formed 
  only 
  have 
  to 
  add 
  one 
  or 
  drop 
  

   two 
  electrons 
  from 
  the 
  surface 
  ring, 
  according 
  as 
  the 
  product 
  

   is 
  formed 
  by 
  a 
  y#-ray 
  or 
  an 
  a- 
  ray 
  transformation, 
  and 
  the 
  

   element 
  comes 
  into 
  its 
  right 
  place 
  in 
  the 
  periodic 
  system. 
  

   No 
  further 
  arrangement 
  of 
  the 
  external 
  system 
  should 
  be 
  

   necessary. 
  

  

  According 
  to 
  the 
  view 
  put 
  forward 
  in 
  this 
  paper 
  the 
  quant 
  

   number 
  may 
  vary 
  as 
  an 
  integer 
  from 
  the 
  value 
  n 
  = 
  1 
  nearest 
  

   to 
  the 
  nucleus. 
  Now 
  the 
  idea 
  suggests 
  itself 
  that 
  passing 
  

   inwards 
  from 
  the 
  K-ring 
  the 
  electrons 
  which 
  partake 
  in 
  the 
  

   constitution 
  of 
  the 
  nucleus 
  might 
  have 
  quant 
  numbers 
  smaller 
  

   than 
  unity. 
  

  

  