United States or China ? Vote for the TOP Country of the Week !
Considering the wondrous richness and variety of the terrestrial life wrought out by the few sunbeams which we catch in our career through space, we may well pause overwhelmed and stupefied at the thought of the incalculable possibilities of existence which are thrown away with the potent actinism that darts unceasingly into the unfathomed abysms of immensity.
Niepce, a Frenchman, discovered "actinism," that power in the sun's rays which produces a chemical effect; that granite rocks, and stone structures, and statues of metal "are all alike destructively acted upon during the hours of sunshine, and, but for provisions of Nature no less wonderful, would soon perish under the delicate touch of the most subtle of the agencies of the universe."
Niépce, a Frenchman, discovered "actinism," that power in the sun's rays which produces a chemical effect, that granite rocks, and stone structures, and statues of metal, "are all alike destructively acted upon during the hours of sunshine, and, but for provisions of Nature no less wonderful, would soon perish under the delicate touch of the most subtile of the agencies of the universe."
Niepce, a Frenchman, discovered "actinism," that power in the sun's rays which produces a chemical effect, that granite rocks, and stone structures, and statues of metal, "are all alike destructively acted upon during the hours of sunshine, and, but for provisions of Nature no less wonderful, would soon perish under the delicate touch of the most subtile of the agencies of the universe."
From her talk with Ericson, and even more from the influence of his sad holy doubt, a fresh touch of the actinism of the solar truth fell upon the living seed in her heart, and her life burst forth afresh, began to bud in new questions that needed answers, and new prayers that sought them. But she never dreamed that Robert was capable of sympathy with such thoughts and feelings: he was but a boy.
Meanwhile, two or three interesting investigations naturally suggest themselves; to determine, for instance, the relative actinism of blue sky, haze, and clouds; also, the relative exposures proper to give at different hours of the day, at different seasons of the year, and in different countries.
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.
A sunbeam may be capable of three divisions LIGHT, HEAT, and ACTINISM; the last causes all the chemical changes, and is the acting power upon surfaces prepared to receive the photographic image.
Word Of The Day