Tesla Coil for X-Ray

Questions. — (A) In the high frequency apparatus in the March issue, (answer to E. H. B., Brooklyn) I wish to ask whether this coil can be used for X-ray purposes? (B) If this coil will perform the experiment on page 162 in July issue? (C) Can I use No. 35 wire in place of No. 31, and if so, what would be the effect? (D) How can I build a fluoroscope? — T. R. F., Pryor Creek, Okla.

Answers. — (A) Yes.
(B) No.
(C) Yes, but the Tesla coil would have to be varied to suit the change in the induction coil or transformer, as the coil voltage would be greater but the current less. Therefore a smaller condenser would have to be used, and the Tesla coil wound to suit the condenser. The induction coil described would require more careful insulation between secondary and primary if No. 35 wire were used as the voltage would be greater.
(D) To make a fluoroscope take a sheet of paper or other substance transparent to X-rays and cover it with a fluorescent substance such as tungstate of calcium or platino-barium-cyanide. Mount it in the large end of a stereoscope with the fluorescent surface turned toward the inside.