X-rays simply explained : a handbook on the theory and practice of radiography (1903)
Howgrave-Graham, Robert Pickersgill, 1880- · London : Percival Marshall & Co · leaf 23
.v i:\ri..\i\T.h. one mentioned by Sir W. Crookes gave a brilliantgreen light Rubies, which in their valuable form consist of red•.ils of alumina, fluoresce b deep rich crimson,even if coarse rough specimens, almost, or quitedevoid of colour, arc employed. Sir W. Crookea also found thai… … Fig. 2. identical with those of crystalline alumina. Itseemed as though the continual battering andjostling rough treatment by the kathode stream, hadworried the alumina into a different moleculararrangement—had perhaps even tidied it up intoBonie degree of crystalline respectability. Dolomite, a…
X-rays · Cathode rays · Fluorescence
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