Light--Optics--Solar Spectrum--Decomposition of Light--Light, Heat, and Actinism--Blue Paper and Color for the Walls of the Operating Room-- Proportions of Light, Heat and Actinism composing a Sunbeam-- Refraction--Reflection--Lenses--Copying Spherical Aberration-- Chromatic Aberration, .英文原著 · 《American Hand Book of the Daguerreotype》
Light--Optics--Solar Spectrum--Decomposition of Light--Light, Heat, and Actinism--Blue Paper and Color for the Walls of the Operating Room-- Proportions of Light, Heat, and Actinism composing a Sunbeam-- Refraction--Reflection--Lenses--Copying Spherical Aberration-- Chromatic Aberration.英文原著 · 《American Hand Book of the Daguerreotype》
Light is white and colorless, as long as it does not come in contact with matter. When in apposition with any body, it suffers variable degrees of decomposition, resulting in color, as by reflection, dispersion, refraction, and unequal absorption.英文原著 · 《American Hand Book of the Daguerreotype》
When a ray of light passes from one medium to another, and through that into the first again, if the two refractions be equal, and in opposite directions, no sensible effect will be produced.英文原著 · 《American Hand Book of the Daguerreotype》
The reader may readily comprehend the phenomena of refraction, by means of light passing through lenses of different curves, by reference to the following diagrams:--英文原著 · 《American Hand Book of the Daguerreotype》
Whether rays be red or green, blue or yellow, they are all reflected in precisely the same manner from a mirror. Accordingly, Newton perceived that if he could construct a telescope the action of which depended upon reflection, instead of upon refraction, the difficulty which had hitherto proved an insuperable obstacle to the improvement of the instrument would be evaded.英文原著 · 《Great Astronomers》