Showing the Scintillations of Radium.
PRICE 21s. each.
[Illustration]
PURE RADIUM BROMIDE, when available
PITCHBLENDE and THORIUM NITRATE.
[Illustration]
From Radio-Active Substances by Marie Curie.
Showing the Scintillations of Radium.
PRICE 21s. each.
[Illustration]
PURE RADIUM BROMIDE, when available
PITCHBLENDE and THORIUM NITRATE.
[Illustration]