80

CHAPTER V

ENERGY

ART. 51. ENERGY 83
" 52. CONSERVATION OF ENERGY 84
" 53. TRANSFORMATION OF ENERGY 86
" 54. POTENTIAL ENERGY 87
" 55. KINETIC ENERGY 89
" 56. ENERGY AND MOTION 91
" 57. CONSERVATION OF MOTION 92
" 58. TRANSFORMATION OF MOTION 93
" 59. MOTION AND WORK 95

CHAPTER VI

HEAT, A MODE OF MOTION

ART. 60. HEAT, A MODE OF MOTION 98
" 61. HEAT AND MATTER 100
" 62. RADIATION AND ABSORPTION 104
" 63. HEAT IS A REPULSIVE MOTION 107
" 64. RADIANT HEAT 109
" 65. DIRECTION OF A RAY OF HEAT 111
" 66. LAW OF INVERSE SQUARES 112
" 67. FIRST LAW OF THERMODYNAMICS 114
" 68. SECOND LAW OF THERMODYNAMICS 116
" 69. IDENTITY OF HEAT AND LIGHT 119

CHAPTER VII

LIGHT, A MODE OF MOTION

ART. 70. LIGHT, A MODE OF MOTION 122
" 71. TRANSVERSE VIBRATION OF LIGHT 130
" 72. REFLECTION AND REFRACTION 135
" 73. THE SOLAR SPECTRUM 139
" 74. DIRECTION OF A RAY OF LIGHT 144
" 75. INTENSITY OF LIGHT 145
" 76. VELOCITY OF LIGHT 148
" 77. DYNAMICAL VALUE OF LIGHT 150
" 78. ELECTRO-MAGNETIC THEORY OF LIGHT 155

CHAPTER VIII

AETHER AND ELECTRICITY

ART. 79. ELECTRICITY, A MODE OF MOTION 162
" 80. E