Chapter X

118. X-rays Begin before Striæ End. EDISON and
THOMSON, E.

119. Reason why Thin Walls are Better than EDISON
Thick.

120. To Prevent Puncture of Discharge Tube EDISON
by Spark.

121. Variation of Vacuum by Discharge and by EDISON
Rest.

122. External Electrodes Cause Discharge EDISON
through a Higher Vacuum than
Internal.

123. Profuse Invisible Deposit from Aluminum EDISON and
Cathode. MILLER

124. Possible Application of X-rays. EDISON and
Fluorescent Lamp. FERRANTI

124_a_. Greater (?) Emission of X-rays by PILTCHIKOFF
Easily Phosphorescent Materials.

125. Electrodes of Carborundum. EDISON

126. Chemical Decomposition of the Glass of EDISON
the Discharge Tube Detected by the
Spectroscope.

127. Sciagraphs. Duration of Exposure EDISON
Dependent upon Distances.

128. Differences between X-rays and Light EDISON, FROST,
Illustrated by Different Photographic CHAPPIN,
Plates. Times of Exposure. IMBERT,
BERTIN-SANS,
and MESLIN

128_a_. GEORGES MESLINS INSURED A REDUCTION OF
TIME FOR TAKING SCIAGRAPHS BY THE
DEFLECTION OF THE CATHODE RAYS BY
MEANS OF A MAGNETIC FIELD

129. Size of Discharge Tube to Employ for EDISON
Given Apparatus.

130. Preventing Puncture at the EDISON
Phosphorescent Spot.

131. Instruction Regarding the Electrical EDISON and
Apparatus. PUPIN

132. Salts Fluorescent by X-rays. 1800 EDISON
Chemicals Tested.

133. X-rays Apparently Passed around a EDISON, ELIHU
Corner. Theoretical Consideration by THOMSON,
Himself and Others. ANTHONY, _et
al._

134. Permeability of Different Substances to EDISON and
X-rays. A List of a Variety of TERRY
Materials.

134_a_. Illustration of Penetrating Power of HODGES
Light.

135. Penetrating Power of X-rays Increased EDISON
by Reduction of Temperature. Tube
Immersed in Oil, and the Oil Vessel
in Ice. X-rays Transmitted through
Steel 1/8 in. Thick.

136. X-rays Not Obtainable from Other EDISON, ROWLAND,
Sources than Discharge Tube. _et al._