The SciencesMarch 9, 1918
Focusing X-Rays
Single Wave Length Intensity Increased a Thousand Fold
Stories by L. E. Dodd
The SciencesMarch 2, 1918
The Development by X-Rays of Two New Fields
How the Radiographer has been Able to throw Light in Unexpected Places
TechnologyNovember 4, 1916
Letting the Eye Train the Voice
A New Instrument that Shows a Singer Whether he is True to Pitch