To be living in a period which faces such a complete reconstruction of our notions as to the way in which ether waves are absorbed and emitted by matter is an inspiring prospect. The atomic and electronic worlds have revealed themselves with beautiful definiteness and wonderful consistency to the eye of the modern physicist, but their relation to the world of ether waves is still to him a profound mystery for which the coming generation has the incomparable opportunity of finding a solution.
In conclusion there is given a summary of the most important physical constants the values of which it has become possible to fix,[197] within about the limits indicated, through the isolation and measurement of the electron.
Fig. 36—THE COMPTON EFFECT
The photograph shows the change of wave-length of ether-waves, from blue toward red, because of scattering by free electrons,
and
are the initial characteristic
