During exposure, interference takes place between the incident rays and those reflected by the mirror, with the formation of interference fringes half a wavelength distant from each other.

Was he an animal, that music could move him so? He felt as if the way to the unknown nourishment he longed for were coming to light.

In these letters which I write, in the testimonies I bear, I am presenting to you that which the Lord has presented to me. I do not write one article in the paper expressing merely my own ideas. They are what God has opened before me in vision—the precious rays of light shining from the throne.

Are not rays of light very small bodies emitted from shining substances?

Have not the small Particles of Bodies certain Powers, Virtues or Forces, by which they act at a distance, not only upon the Rays of Light for reflecting, refracting and reflecting them, but also upon one another for producing a great part of the Phænomena of Nature?