According to the undulatory theory, light is thus refracted.
Now, it seems to us that there is quite as much of hypothesis in this speculation of Laplace as in the undulatory theory of light.
An idea of the cause of this change may be obtained by reference to the undulatory theory of light.
Both attacked his theory from the standpoint of the undulatory theory of light which they upheld.
What pitch is to the ear in acoustics, colour is to the eye in the undulatory theory of light.
In this way the Newtonian theory may be merged into the undulatory theory.
Some of the phenomena of radiation can be explained only by the emission theory, and others by the undulatory theory of light.
The undulatory theory, now generally accepted, maintains that light is carried by vibrations in ether.
The undulatory theory of light also assumes the existence of a medium.
The law of Brewster does not apply to matter in this condition, and it rests with the undulatory theory to explain why.