CHAPTER XI.

137. Kind of Electrical Apparatus for TESLA and Operating Discharge Tube for Powerful SHALLENBERGER X-rays.

138. How to Maintain the Phosphorescent Spot TESLA Cool.

139. Expulsion of Material Particles through TESLA the Walls of a Discharge Tube.

139_a_. Giving to X-rays the Property of Being LAFAY and Deflected by a Magnet. LODGE

139_b_. Penetration of Molecules into the Glass GOUY of the Discharge Tube.

140. Vacuum Tubes Surrounded by a Violet TESLA and Halo. HAMMER

141. Anæsthetic Properties of X-rays. TESLA and EDISON

142. Sciagraphs of Hair, Fur, etc., by TESLA, MORTON, and X-rays. Pulsation of Heat detected. and NORTON 142_a_.

143. Propagation of X-rays through Air to TESLA Distances of 60 ft.

144. X-rays with Moderate Vacuum and High TESLA Potential.

145. Detailed Construction and Use of Single TESLA Electrode Discharge Tubes for Generating X-rays.

146. Percentage of Reflection. TESLA and ROOD

146_a_. Reflected and Transmitted Rays TESLA Compared. Practical Application of Reflection in Sciagraphy. Analogy between Reflecting Power of Metals and their Position in the Electro-positive Series.

147. Discharge Tube Immersed in Oil. Rays TESLA Transmitted through Iron, Copper, and Brass, 1/4 in. Thick.

148. Bodies Not Made Conductors when Struck TESLA by X-rays.

149. Non-conductors Made Conductors by a APPLEYARD Current.

149_a_. Appleyard’s Experiment. Non-conductors Made Conductors by Current.

150. Electrical Resistance of Bodies Lowered MINCHIN by the Action of Electro-magnetic Waves.