473 



about change of the luminescent cenires on the transition from the 

 blue to the red argon-specivum. On this head A. Rüttknauek's 

 experiments give no decisive result, because the current-densities 

 applied by this investigator, are too small. The author expresses 

 the hope that — experimenting in this i-egion being impossible to 

 him for the present — this remaik n)a3' induce others to undertake 

 a further investigation. 



§ 6. Quantitative and Simultaneous Parallelism of Light Emission 

 and Pressure Ej/ect. 



We derived in onr former publication that the pressure-effects are 

 chiefly due to the transj)()rtation of ions by the electric current (mass- 

 transportation), Tühick ions have originated at the impact between 

 electrons and atoms. Where the extension of the experiments corro- 

 borates our theoretical conception quantitatively., we think that it is 

 not devoid of interest to remark heie that the theory of quanta 

 manifests its simultaneous and quantitative validity with respect to 

 light emission and pressure effect by means of the positive pile. 



We have, indeed, to do here with two typical regions of the 

 application of the theory of quanta: 



1. With light emission, the region of spectroscopy, in which the 

 phenomena should be studied, which present themselves on the r<?/?<ni 

 of electrons from abnormal to less abnormal paths; 



2. With the region of the pressure effects, in which the collisions 

 should be studied between electrons and atoms, the formation of ions, 

 hence*) the passing of the atom-electrons from normal to abnoi'nial paths. 



As soon as the "bearers" change their character, both the character 

 of the light emission and of the pressure effect changes. The latter 

 may reverse its sign; as regards the light emission the change finds 

 among others a pregnant expression in the law of displacement 

 already cited in our previous paper. 



If on the other hand the electric conditions do not change 

 characteristically, if the bearers continue to preserve the same 

 character, our quantitative objective measurements of the light emission 

 and our and Rüttenaukr's manometi-ic determinations of the pressure 

 effect prove the simultaneous qitantitative proportionality of light- and 

 pressure effect unth the added energy. That the light emission does 

 not change its character through increase of the added quantity of 

 energy, was only what was to be expected according to the theory 

 of quanta. Accordingly we consider particularly the fact that the 

 same thing holds simultaneously for the pi-essure-effect, a contribution 



*) As far as the positive ions are concerned. 



