t h e existence, a n d n o one w i s h e s t o s u p p l a n t t h e m w i t h q u a n t a .
OT quite five years ago I published in this journal an article entitled Waves and Quanta, expounding there the data which invited a corpuscular theory of light, regardless of the great array of cla
E A S U R E M E N T of wave-lengths is the subject which we shall now consider.
C A T T E R I N G of light is one of the commonest of all phenomena, which does not in the least imply that it is one of the most commonplace.
This is an elementary introduction to the phenomena of diffraction of waves by crystals, one of the most striking a n d i m p o r t a n t discoveries of the last t w e n t y years of physics.
HE subject of this article is more narrowly restricted than those of m a n y others of the series.
M A G I N E a stream of electrons projected, all with known and uniform velocity and along the same direction, into a rarefied gas.
T is often said that the conversion of the elements into each other has been the dream of the human race for many centuries, nay even for millennia.
HE subject of this article is unique in modern physics for the minuteness of the phenomena, the delicacy of the observations, the adventurous excursions of the observers, the subtlety of the analys
N this article I will describe some of the phenomena which are observed when the voltage across a region filled with gas is varying quite rapidly.
