Whether the star actually disappeared at once, as if instantaneously extinguished, or whether, as I thought at the moment, it remained for some tenth of a second partially visible, as if refracted by an atmosphere belonging to the satellite, I will not venture to say.

Sir Isaac Newton has observed, that the breadths of the seven primary colours in the Sun's image refracted by a prism are proportional to the seven musical notes of the gamut, or to the intervals of the eight sounds contained in an octave, that is, proportional to the following numbers: Sol.

He could understand the rays being refracted by the crystal and coming to a focus in its interior, but this diffusion jarred with his physical conceptions.

Its Motions are admirably directed by the Muscles; the Perspicuity of the Humours transmit the Rays of Light; the Rays are regularly refracted by their Figure, the black Lining of the Sclerotes effectually prevents their being confounded by Reflection.

In the first generation he lived out his life scarcely refracted by the new atmosphere.