Actinism

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." ❋ Various (N/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 ❋ Unknown (1969)

Light or luminous power to one portion; heat or calorific power to another; and chemical power or actinism to a third. ❋ Unknown (2004)

The mechanism must be sensitive, as such properties of matter as heat, light, electricity, magnetism, and actinism, are to be handled, caused to vanish and reappear, analyzed and measured. ❋ Various (N/A)

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. ❋ Various (N/A)

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. ❋ Unknown (1909)

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. ❋ Unknown (1876)

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. ❋ George MacDonald (1864)

It is the centre from which an inconceivable amount of force in the shape of light, heat, actinism, and probably other manifestations, is hourly poured forth. ❋ Unknown (1854)

_actinism_, are names of _effects of radiant energy_. ❋ Various (N/A)