An intensely radioactive metallic element that occurs in minute amounts in uranium ores

Usage examples of radium.

The discovery of radium is chiefly accredited to a woman, and women have a few valuable inventions to their credit.

That machine yonder detects the waves from a millionth of a millionth of a milligramme of radium.

Professor Pierre Curie, who with his wife, Marie, had discovered the elements polonium and radium the year before.

As I examined the heterogeneous collection of odds and ends that is always to be found in the pocket-pouch of a Martian warrior my hand fell upon the emblazoned radium flash torch of the black dator.

Conan rushed up the marble stair, the man above shook himself from his stupor and drew a sword that sparkled frostily in the radium light.

But in uranium and radium mines with a low-to-marginal lode yield, Thiobacillus is being used with increasing regularity.

At one time there were not enough radium or high-powered Xray machines to go around, to treat the numerous sufferers from tumors and cancers of various forms.

Tiny sparks in infinite numbers leaped from it--like, I thought, the radiant shower of particles hurled out by radium when seen under the microscope.

Inspired by our attempt, a French industrial, Armet de Lisle, had the idea, which seemed daring at that epoch, of founding a veritable radium factory that would furnish this product to physicians, whose interest in the biological effects of radium and its possible therapeutic applications had been aroused by the publication of various investigations.

Investigations on the conductibility provoked in dielectric liquids by the rays of radium and the Roentgen rays.

In 1902 I succeeded in preparing a decigramme of chloride of pure radium which gave only the spectrum of the new element, radium.

To offset this, the quantity of radium contained in uranium minerals is scarcely more than three decigrammes of radium to the ton of uranium.

Indeed we know to-day that even in the best minerals there are not more than a few decigrammes of radium in a ton of raw material.

A fact which may have a significance which we cannot at present see is that the emanation from radium gradually and spontaneously changes into helium, an alchemistical feat of nature that has opened many curious vistas to speculative thinkers.

His characterisation was pointed with such wide-eyed and unsullied innocence, such eager and open-mouthed receptivity, such a succulently plastic amenability to suggestion, such rich response to flatteryin a word, with such a sublime absorptiveness to the old oilthat men such as Mr Quarterstone, on becoming conscious of him for the first time, ha been known to wipe away a furtive tear as they dug down into their pockets for first mortgages on the Tower of London and formul for extracting radium from old toothpaste tubes.