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》
Chromatic Aberration is another difficulty that opticians have to contend with in the manufacturing of lenses. It will be remembered, that in a former page (133) a beam of light is decomposed by passing through a glass prism giving seven distinct colors--red, orange, yellow, green, blue, indigo and violet.英文原著 · 《American Hand Book of the Daguerreotype》
To overcome the difficulty arising from the chromatic aberration, the optician has only to employ a combination of lenses of opposite focal length, and cut from glass possessing different refrangible powers, so that the rays of light passing through the one are strongly refracted, and in the other are bent asunder again, reproducing white light.英文原著 · 《American Hand Book of the Daguerreotype》
To the photographer one of the most important features, requiring his particular attention. is, that he be provided with a good lens. By the remarks given in the preceding pages, he will be enabled, in a measure, to judge of some of the difficulties to which he is occasionally subjected. We have in this country but two or three individuals who are giving their attention to the manufacture of lenses, and their construction is such, that they are quite free from the spherical or chromatic aberration.英文原著 · 《American Hand Book of the Daguerreotype》
The jest was carried to its end. A formidable, official document was prepared, encrusted with chromatic seals and jaunty with fluttering ribbons, bearing the florid signatures of state. This commission conferred upon el Senor Don Felipe Carrera the title of Flag Admiral of the Republic of Anchuria. Thus within the space of a few minutes and the dominion of a dozen "extra dry" the country took its place among the naval powers of the world, and Felipe Carrera became entitled to a salute of nineteen guns whenever he might enter port.英文原著 · 《Cabbages and Kings》
You don't have Chromatic in New York, do you?美剧 · 《Billions》