..."We ought to be close to that radium, now," he said... 
Various 「Astounding Stories, April, 1931」
...It was relieved by Professor Guinness'spicking up the chunk of radium ore his former partner had hewn fromthe cavern's wall...
Various 「Astounding Stories, April, 1931」
..."No, it's absolutely safe now, and will be safe until this stud isturned, releasing the activating gas from one compartment to minglewith the radium compound in the other section...
Various 「Astounding Stories, May, 1931」
..."If I remember my science right, ultra-violet lightwould make the radium on the dial glow; and the lead in the tin-foilof the tobacco wrapping would screen it off...
Various 「Astounding Stories, July, 1931」
...By the side ofeach one is a wide angle telescopic concentrator which will focus anyreflected ultra-violet onto a radium coated screen and thus make itvisible to us...
Various 「Astounding Stories of Super-Science September 1930」
...This ship is radium propelled, and the men andwomen are the slaves who work in the radium mines...
Various 「Astounding Stories of Super-Science September 1930」
...The whole thing is no mystery after you learn it—notnearly so much as radium, or radio, was...
Various 「Astounding Stories of Super-Science, June, 1930」
..."You see, the ore in the minecontains radium, that is, salts of radium...
Various 「Astounding Stories of Super-Science, June, 1930」
...It usually occurs with silver, that is, the uranium motherore does, through the disintegration of which radium is formed...
Various 「Astounding Stories of Super-Science, June, 1930」
...Theymust be protected from the direct rays of the radium, which isrefined...
Various 「Astounding Stories of Super-Science, June, 1930」
...ow the horde of monsters swelled more and more; the bats and mothswinged in mad frenzy about the open door of the radium shack...
Various 「Astounding Stories of Super-Science, June, 1930」
...This, Professor Gurlone told him, was the effect ofthe radium rays...
Various 「Astounding Stories of Super-Science, June, 1930」
...AndGrantline had recognized the Planetara,and had released his occultingscreens surrounding the radium ore...
Various 「Astounding Stories of Super-Science April 1930」
...Obedient to the driver's touchon a lever, the tiny radium motorof the chariot ceased to revolveand the equipage stopped its forwardmotion...
Sterner St. Paul Meek 「Giants on the Earth」
... Bodies such as radium, thorium, etc...
Garrett Serviss 「Curiosities of the Sky」
...Sir William Ramsay, however, discovered it to be also aterrestrial element in 1895, and since then it has come into muchprominence as one of the products given off by radium...
Cecil G. Dolmage 「Astronomy of To-day」
...Called on to explain all this, science can only say that a molecularchange must be going on in the radium, to correspond to the heat itgives out...
Simon Newcomb 「Side-lights on Astronomy and Kindred Fields of Popular Science」
...Up to the time when radium was discovered, the most carefulinvestigations of all conceivable sources of supply had shown only onewhich could possibly be of long duration...
Simon Newcomb 「Side-lights on Astronomy and Kindred Fields of Popular Science」
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