...succeeded in establishing the most complete parallelism between optical phenomena and those of wave-motion. The justification of a theory consists in its exclusive...must for the future occupy much of our attention. 217. In the case of sound, the velocity depends upon the relation of elasticity to density in the body...

...succeeded in establishing the most complete parallelism between optical phenomena and those of wave-motion. The justification of a theory consists in its exclusive...must for the future occupy much of our attention. 217. In the case of sound, the velocity depends upon the relation of elasticity to density in the body...

...succeeded in establishing the most complete parallelism between optical phenomena and those of wave-motion. The justification of a theory consists in its exclusive...phenomena. On such a basis the Wave Theory, or the Uhdulatory Theory of light, now rests, and every day's experience only makes its foundations more secure....

...succeeded in establishing the most complete parallelism between optical phenomena and those of wave-motion. The justification of a theory consists in its exclusive...phenomena. On such a basis the Wave Theory, or the Uhdulatory Theory of light, now rests, and every day's experience only makes its foundations more secure....

...like sound, was the result of undulating motion. Young and Fresnel both entertained similar views. "These two eminent philosophers, while adducing whole...now rests, and every day's experience only makes its foundation more secure." (Tyndall.) Every known phenomenon connected with light is now explained in...

...inexplicable by the emission theory, succeeded in establishing the most complete parallelism bet ween optical phenomena and those of wave motion. The justification...to account for phenomena. On such a basis the Wave Tlitory, or the Undulatory Theory of light, now rests, and every day's experience only makes its foundations...

...not to feel over-confident that it will permanently establish itself as a fact of Science. He says: " The justification of a theory consists in its exclusive competence to account for phenomena." We think the word " exclusive " could well be omitted, and the word " general " might be substituted,...

...science of physics presents its truths, as facts of a veritably existent and actually known Cosmos:— " The justification of a theory consists in its exclusive...Light, now rests, and every day's experience only makes ita foundations more secure. . . . This substance is called the luminiferous ether. It fills space...

...of physics presents its truths, as facts of a veritably existent and actually known Cosmos : — " The justification of a theory consists in its exclusive...only makes its foundations more secure. . . . This substance is called the luminiferous ether. It fills space ; it surrounds the atoms of bodies ; it...

...of physics presents its truths, as facts of a veritably existent and actually known Cosmos : — " The justification of a theory consists in its exclusive...only makes its foundations more secure. . . . This substance is called the luminiferous ether. It fills space ; it surrounds the atoms of bodies ; it...