A Brief Account of Radio-activity

It can easily be seen that the revelations of radio-activity must have a far-reaching effect upon chemical theory, throwing light upon, and so bringing nearer, the solution of s...

A study of the properties of radium will aid in throwing light upon the question as to the building up of the atom. First to be considered are the usual properties which disting...

One of these phenomena is the power of forming ions or carriers of electricity by the passage of the rays through a gas, thus ionizing the gas. The details of an experiment will...

Is this power of emitting radiations a permanent property or is it lost with the passage of time? The first investigations of the activity of uranium and thorium showed no loss...

The remarkable disintegrations related in the last chapter, in which the heaviest known elementary atom--that of uranium (at. wt. 238)--is by successive stages changed into othe...

The object of this brief treatise is to give a simple account of the development of our knowledge of radio-activity and its bearing on chemical and physical science. Mathematica...

Influence upon chemical theory--The periodic system--Basis of the periodic system--Influence of positive nucleus--Determination of the atomic number--Use of X-ray spectra--Chang...

Ionization of Gases--Experimental confirmation--Application of electric field--Size and nature of ions--Photographing the track of the ray--Action of radiations on photographic...