Chapter VII

79. X-rays Uninfluenced by a Magnet. Source ROENTGEN
of X-rays Determined by Magnetic
Transposition of Phosphorescent Spot.

80. Source of X-rays may be at Points ROENTGEN
within the Vacuum Space. Different
Materials Radiate Different
Quantities of X-rays.

81. Reflection of X-rays. ROENTGEN

82. Examples of Penetrating Power of ROENTGEN
X-rays.

83. Permeability of Solids to X-rays ROENTGEN
Increases Much More Rapidly than the
Thickness Decreases.

84. X-rays Characterized. Fluorescence and ROENTGEN
Chemical Action.

85. Non-refraction of X-rays Determined by ROENTGEN
Opaque and Other Prisms. Refraction,
if Any, Exceedingly Slight.

86. Velocity of X-rays Inferred to be the ROENTGEN
Same in All Bodies.

87. Non-double Refraction Proved by Iceland ROENTGEN and
Spar and Other Materials. MAYER

88. Rectilinear Propagation of X-rays ROENTGEN
Indicated by Pin-hole Camera and
Sharpness of Sciagraphs.

89. Interference Uncertain Because X-rays ROENTGEN
Tested were Weak.

90. Electrified Bodies, whether Conductors ROENTGEN
or Insulators, or Positive or
Negative, Discharged by X-rays.
Hydrogen, etc., as the Intermediate
Agency.

90_a_. Application of Principle of Discharge ROENTGEN
by X-rays.

90_A_, Supplementary Experiments on Charge and MINCHIN,
_b_, Discharge by X-rays. RIGHI,
_c_, BENOIST,
_d_. HURMUZESCU,
and BORGMANN

91. Focus Tube. ROENTGEN,
SHALLENBERGER,
_et al._

91_a_. Tribute to the Tesla Apparatus. ROENTGEN

92. X-rays and Longitudinal Vibrations. ROENTGEN

93. Longitudinal Waves in Luminiferous THOMSON
Ether by Electrical Means Early (KELVIN)
Predicted by

94. Theory as to X-rays Being of a SCHUSTER
Different Order of Magnitude from
those so far Known.

95. Longitudinal Waves Exist in a Medium THOMSON, J. J.
Containing Charged Ions. Theoretical.

96. Practical Application of X-rays BOLTZMANN
Foreshadowed.

97. The Sciascope. MAGIE,
SALVIONI, _et
al._